Ideal situation would be always coast and as you hit brakes car shifts from minor regen to full regen plus friction braking depending on how hard you stomp on the brake peddle
It's just about conservation of energy. So don't slow down for corners :) also slow down early for traffic lights so you can be moving when they go green :)
Exactly. And losses to heat cannot be avoided, so less acceleration and deceleration overall, the better. Regen does recuperate some kinetic energy, but only a relatively small part.
@@bazoo513 you’re right except you can conserve heat if you don’t generate it in the first place. But you’ll never be able to recoup the amount of power that you used. laws of thermal dynamics cannot be broken.
I drove a model y and 3 as I'm debating on getting one and the only thing I didn't like about the drive was that I had to hold my foot on the accelerator the entire time to maintain the speed. The second you let off regen kicks in and starts braking. Driving my Ford Taurus right now, I didn't realize how nice it is to accelerate and then just let off and rest my foot on the floor until I either need the gas or the brake. Its much more comfortable to do that in my view. Maybe I just need to drive one of those two cars again for a little while to test this theory and see if its actually going to be noticeably annoying or not.
I've had a 2017 Ford Focus Electric for over a year, and I just got a Tesla Model 3 LR RWD (just like yours) for my wife right before they discontinued them (again), and what I've found to be the most efficient way to drive both EVs is to use the cruise control, especially when going downhill. Set the speed you want to go downhill at and it'll *use* the regenerative braking to keep you at that speed. That way you're gaining energy the entire time you're going downhill, you aren't having to constantly adjust the pressure on the accelerator to keep it in that perfect sweet spot, and you save your brakes! It'll automatically adjust the amount of regen in order to keep you at that set speed, it'll even coast itself for any flatter parts. Now here's the part I'm confused about your explanation about the losses: even if the losses are compounded when regen is used, you're still getting something back. I mean, when you coast, you're losing less, but you're also not getting anything back, whereas, when you use regen, I would agree with you if you were *just* losing more, but you're also gaining stuff back, enough for it to not only make up for the losses, but more than that, so that you're in the positive, so isn't regen still better in that sense?
Nope. Trust me on this. Coasting is better in many circumstances. You cannot gain more than is lost. That is gaining energy for free. Physics 101......
@@TechForumTesla If you're saying that if I drive up a hill, I won't get back all the energy I used going up going down the other side, then I agree with you, and if that's what you thought I was saying, it wasn't. I know that. Now correct *me* if I'm wrong, but now it sounds like you're saying that using regen has no positive outcome other than saving your brakes, that you don't get anything back? Because if so, I know for a fact that's wrong because we've driven up and over mountains with the Tesla, and while we didn't have the same percentage we had before we drove over the mountain when we got to the other side, we did have a higher percentage than we had at the top of the mountain meaning we did gain back energy going down the other side, even if it wasn't everything we use going up.
@@teslasnek you weren't paying attention to the video. Using regen gives you back less than you put in (probably nearly 50% loss). Coasting retains 100% energy only dropping through friction, wind, etc. resistance, etc.
@@TechForumTesla Ok, that I 100% agree with, thank you! Now when it comes to using the cruise control going downhill (explained in 1st comment), I was wondering what your opinion is on that or if you've ever tried it, because most EV owners I've talked to have never thought of that.
Basically what I'm saying is that if I just put the car in neutral and coasted all the way down a mountain, I would end up at the bottom of the mountain with the same amount of energy in my battery as I had when I started at the top, whereas if I used my cruise control to regen all the way down the mountain I will end up with more energy at the bottom than I had when I started at the top. Having more energy than you started with seems like it would be better than just ending up with the same energy you started with, agree? Like I said in my first comment, I agree with you that costing results since you are losses, but when you use regen, even though the losses are increased, you're still ending up with *MORE* energy than you had!
When you drive in "regen" level your car (Ioniq 5) is regenerating energy even while you driving, but doing so it lose more energy than it produces, obviously. If you drive in level 0, there is no resistance and no energy los. Best to drive on level 0! To extende you range you mast plane you driving: 1. left your foot from the throttle and glid as long you are not slowing the trafic bihand, then 2. regen to slow, then 3 brake to stop.
Thanks Matt. 👍 A lot of people don’t understand the points you’ve mentioned. Whilst I wait for my Model 3, here in Oz 🇦🇺 I drive a PHEV. I can get much further on my very small battery by using little to no regen- assuming of course that I don’t use the brakes (which takes a lot of anticipation.) Coasting is definitely much more efficient. (The PHEV is great as it has flappy paddles with five different levels of regen, and also increases regen with gentle brake pedal activation before applying the brakes, and it’s a real shame the Tesla’s don’t have something similar.) My guess is that regen is at best 50% efficient. That’s one good reason that different drivers can see a big difference in range whilst driving at basically the same speed - every time you dip into the regen area, (or obviously much worse still, use the brakes!) you’re losing range. Cheers
For anyone concerned/confused, it's easy to just hold a speed, maybe easier than an ICE, but if you want to minimize regen or acceleration (true coasting), that is what is more difficult in an EV.
There is a different pedal mode that allows extremely heavy regen (I am talking 3 times or more regen than a Tesla) all the way down to a stop and it allows it to coast as if it was an auto gas car. All with one pedal. It feels really wierd when you first go on it but it is very easy to get used to it.
I have a Zero DSR, I commuted 4000Mi on the same trip For me setting a 'coasting' custom mode let me coast down a 2 mile hill every day when commuting. It was much harder to manage in what I would call a 'road trip' mode, 100% regen on off throttle which gives a very progressive regen on negative throttle which is better over unpredictable terrain, not so much during that everyday commute, say less than 10% difference, but it's a more comfy ride w/coast on The lack of coast hurts quite a bit in some situations, It will vary based on your elevation profiles though.
When you use regent, do the break lights come on. I just had a guy tell me I had no break lights when stopped. So when stopped maybevwise to look into the rear view mirror and tap the break pedal so they know you are stopped. Don’t know what to do about regen and break lights. Also if you are on auto drive and you’re set to (x amount of car cushion) if your car adjusts to keep its distance I don’t know if the break lights activate or not.
It is actually quite simple. Regen is MUCH more efficient than using the mechanical brakes. If you need to slow down and the Regen can accomplish that deceleration then use Regen as opposed to using the mechanical brakes. Regen will ALWAYS be more efficient than the brakes but there are circumstances where Regen can’t provide the stopping power necessary. Coasting is ALWAYS more efficient than Regen because Regen involves the electrical losses that coasting doesn’t have. All other losses are the same between those two choices. Basically you should Coast unless that doesn’t provide enough deceleration. You should use Regen in that case unless Regen isn’t providing enough deceleration then you should use the brakes. Your first choice should ALWAYS be Coasting, then Regen, then brakes if efficiency is your primary factor.
On my Outlander PHEV manual braking charged the batteries why I always used coasting, zero regen. Can you set the amount of regen down to zero on the Tesla?
When you drive in "regen" level your car (Ioniq 5) is regenerating energy even while you driving, but doing so it lose more energy than it produces, obviously. If you drive in level 0, there is no resistance and no energy los. Best to drive on level 0! To extende you range you mast plane you driving: 1. left your foot from the throttle and glid as long you are not slowing the trafic bihand, then 2. regen to slow, then 3 brake to stop.
Thank you so much for this information, it was especially helpful the way you described what you were doing as you were actually driving and slowing down. Was wondering about this question, but it was a low priority; until I just watched a video about Hyundai's new electric and how it has a bias for coasting vs regen. I'm subscribed to your channel, and appreciate that you didn't parrot that annoying "thumbs up, share and subscribe"; I automatically do that for good content, as it should be.
I can refer to that with Prague electric transport vehicles (trams, metro). In theoretical and practical lessons you are taught to coast as much as you can. In case of older vehicles due to absence of regenerative braking (only rheostatic was present which basically same regen, but instead of putting energy back to battery or power grid you dissipate that energy into larger resistor banks to heat). In case of both old and new vehicles prefering coasting is better because only aerodynamic resistance and friction are source of energy waste, however when you apply regenerative brake, more sources of losses become present (motor, wiring, traction/electric brake regulator, battery / power grid resistance). Therefore in case of going downhill it is suggested to accelerate only to about one half of speed limit and start using regen as you are about to exceed speed limit instead of accelerating to speed limit and instantly start braking. Of course if you need to obey speed regenerative brakes does much better job than rheostatic or friction brakes.
I'd heard Tesla had sensors all around the car. And there's a feature for Automatic Braking. So just wondering that after the car slows down due to regen feature shouldn't it come to a complete stop BY ITSELF due to the auto braking as it gets too close to the car ahead....??
are you saying that you have to use Neutral on a Tesla to do coasting?? You don't have a Regen zero setting like most other EVs? I would really like to know what the actual losses % are in the regeneration system but I have never been able to find a test of that.
Great video. My wife drives that way in our ICE cars. More so in her manual Chevy Cruze Eco. You noticed the other Model 3. My wife noticed the classic that drove by at 1:04-1:05. I was wondering if it is a Chevy Bel Air.
Yup, agreed, coasting is a bit better in some situations, but not by much in my BoltEV. And unless I'm trying to make max range on a long trip, I don't really care about efficiency. This thing is so wonderfully efficient, I don't need to optimize it. So much more efficient than all the vehicles around me - that's for sure... Most of the time I drive for time saving. Quick starts and quick stops get me way ahead of the traffic and save significant time (and it does it so effortlessly). I don't have to be aggressive or rude either - this BoltEV really does bolt through traffic. Everybody else is gingerly trying to speed up and slow down in a futile effort to save on their old paradigm fuel costs - I focus on trying to judge the right point to jam on the regen and come to a stop at the right spot maxing out the regen energy after staying on speed as long as possible. (traffic permitting of course). The BoltEV's one-pedal mode works beautifully, you never need brakes and the regen braking is ten times what my old Prius did. Now - driving reminds me of the time I traveled in the Philippines where the roads are clogged by all manner of slow transportation and anyone driving a rare new vehicle spent all their time dodging in and around in an effort just to maintain 50kph. Battery electric drive is just flat-out a superior drive system for vehicles. Don't miss out....
Come on, this is not so complicated: regen is like engine braking (with appropriate downshifting) in an ICE car, only with partial reclaiming of energy. Coasting is the same in both ICE and EV cars. There is a slight difference in how one commands those regimes (no shifter not clutch in EVs), but the function is the same. BTW, I like paddle-adjustable regen levels pretty much everyone but Tesla uses. Perhaps it is not strictly necessary but makes driving more fun (and you can always leave it on "auto" (o: ).
I don't know what the Tesla gets, but I only get about 10% back If i'm lucky in regen, so if you want to hypermile a commute your calculations will change when you hammer it off the line every chance you get =P I know my subaru only got 24mpg hammering every line, The Zero is free next to that... $0.01/mile hammering the slow speed limit commute.
@@cliff4377 I think that Tesla can theoretically regeneratively brake with about 60kW into the battery - kinetic energy absorbed must be greater, with the difference going to heat. Now, how large the difference is, I have no idea. But, of course, driving smoothly, at a constant speed, will always be more energy-efficient than accelerating and decelerating - heat losses cannot be avoided.
If you are going from 50 to 40 over half a mile, you put energy back in the battery as you slowly let off the accelerator. Over the same distance and speed change, if you coast in neutral, you don't put any energy back in the battery. So I don't see how coasting in neutral is more efficient. There is no case I can see where putting in neutral is going to improve your overall efficiency.
@henryw4129 It really depends on how long you can go at a higher speed or how long you are willing to go under the speed limit if approaching a reduced speed. If you see a reduced speed sign or just a lower speed sign ahead, you can't coast long before needing to apply a brake. That ends up using more energy overall as you lose the regen. Also, I attempted to coast going down mountains in Pennsylvania shortly after seeing this video last year, and the car still reduced speed (probably due to rolling resistance). It was a steep enough grade that there were emergency offramps for semis and warnings about the grade. Then had to go back into drive to accelerate to maintain speed. This is risky because there are rare times where you need to accelerate on demand to avoid dangerous situations. Having the extra step of switching gears would possibly end up in a rear end or side collision in those types of cases. I've also had tried normal routes with coasting after getting the S3XY buttons which allow you to set 0 regen on Tesla as one option and compared my overall energy usage to normal chill driving and had different results from this channel. The end Wh/mi was slightly more in the coasting model and I concluded the risk and extra steps were not worth it even if some other environment variable (like change in temp, wind resistance, drafting effect from behind vehicles, etc) caused the regen to win in my own tests.
nah that truly sucks coasting is vital i don't wanna break for no dang reason instead of wasting energy having to keep on the gas. another reason these cars are trash
I coast a lot with my ICE car, too. It is basically the same thing except I dont have regen and coasting is not as good as EV, because engine has friction too. Still if I hypermile my Coralla I can do 45-47 mpg. But the efficiency Of Teslas are outstanding. So, EPA rating of my corolla is 36mpg but I can get 47 mpg with hypermiling. I wonder what people get out of model 3 sr+. EPA range is 250miles. Can anyone stretch that to 300miles or something?
Believe it or not, maintaining a consistent speed is not the most efficient way to drive on uneven roads. That is only best on a consistently flat road. It is actually best for efficiency to speed up as you go down hill and slow down as you climb a hill. Cruise control does not do that.
@@TechForumTesla It would be nice if they include this fully in autopilot; "New update: auto-coast feature added. The car will use its sensors to predict the terrain and other traffic and adjust coasting/regen to maximise efficiency". (Yes Elon/Tesla, you can use that name, be my guest)
On rolling hills an option to select a smarter cruise control mode could be a real winner. For example if you set your cruise control to 60MPH, allow the car maintain 55 miles an hour if it detects it is going uphill then on the downhill side allow it to coast (in neutral) up to 65 or even 70MPH (you could get a ticket) if downhill speed exceeds 65/70 speed engage drive mode and use regen. If downhill speed does not exceed 65/70 continue to coast until 55MPH is reached on the next hill then switch from neutral to drive mode to maintain 55 until the next downhill road section.. The parameters of 5 below going uphill and 10 above going downhill could/should be selectable parameters. Basically have the cruise be smart enough to switch automagically in/out of neutral/drive and use regen when necessary to keep the downhill speed safe. All of this could be done by the driver but would not be very relaxing way to drive. Having this cruise control option should extend range and not add much, if any, travel time to the trip.
Great info. Currently driving a Civic with manual trans, lots of coasting going on here/ great mileage. Saving up- to someday pick up a beautiful tech heavy Tesla, -got plenty of Tesla stock so its only a matter of time :) .
There is no "energy savings" in regen...or in coasting. Both are attempting to deal with the same problem of friction loss of energy but in different ways...one by creating friction(regen) the other by keeping friction to the absolute minimum(coasting). "Energy savings" can only come from the type of driving system (pure ice/hybrid/bev) and way the vehicle is designed and most importantly driven/type of traffic. Super(or "ultra") capacitors offer a way to enhance and perhaps dramatically so "energy harvesting" from the reality of brake horsepower. The only two platforms that specialize in this are wind turbines and City Buses that I am aware of. A good primer is Maxwell Technologies of which Tesla just acquired.
I think coasting in neutral will be less efficient when you factor in the gearbox repair bill. I’d never consider doing that in my Volt (which nearly coasts while in “Drive”). I drive in “Low” (moderate regen) and can stop without using the friction brakes due to the Volt’s super regen paddle.
Imievs have a sports mode one pedal driving. It is way better than the Tesla. You can even do a hand brake turn with the accelerator pedal. th-cam.com/video/2XYVYEUW_jo/w-d-xo.html
Driving at speed with other cars around in neutral is dangerous. Have you ever driven behind someone trying to hypermil? Its infuriating and dangerous. If you're so concerned with efficiency, go ride a bike or carpool. It encourages poor driving etiquette and at that point it just becomes all about you. 99% of hypermilers dont do it right.
Ideal situation would be always coast and as you hit brakes car shifts from minor regen to full regen plus friction braking depending on how hard you stomp on the brake peddle
Not in Tesla, tesla’s friction brakes does not regen like other EVs or Hybrids for example prius. They are just friction brakes.
It's just about conservation of energy. So don't slow down for corners :) also slow down early for traffic lights so you can be moving when they go green :)
Exactly. And losses to heat cannot be avoided, so less acceleration and deceleration overall, the better. Regen does recuperate some kinetic energy, but only a relatively small part.
My commute was the same every day. Have to stay with traffic.
Love this method. Roll onto the green light while still moving. Takes a lot of energy to move off from stopped.
@@bazoo513 you’re right except you can conserve heat if you don’t generate it in the first place. But you’ll never be able to recoup the amount of power that you used. laws of thermal dynamics cannot be broken.
@TristenHernandez wasn't it what I was saying?
I drove a model y and 3 as I'm debating on getting one and the only thing I didn't like about the drive was that I had to hold my foot on the accelerator the entire time to maintain the speed. The second you let off regen kicks in and starts braking. Driving my Ford Taurus right now, I didn't realize how nice it is to accelerate and then just let off and rest my foot on the floor until I either need the gas or the brake. Its much more comfortable to do that in my view. Maybe I just need to drive one of those two cars again for a little while to test this theory and see if its actually going to be noticeably annoying or not.
Regen off gives you the same experience
You need to train your foot to keep in neutral
I've had a 2017 Ford Focus Electric for over a year, and I just got a Tesla Model 3 LR RWD (just like yours) for my wife right before they discontinued them (again), and what I've found to be the most efficient way to drive both EVs is to use the cruise control, especially when going downhill. Set the speed you want to go downhill at and it'll *use* the regenerative braking to keep you at that speed. That way you're gaining energy the entire time you're going downhill, you aren't having to constantly adjust the pressure on the accelerator to keep it in that perfect sweet spot, and you save your brakes! It'll automatically adjust the amount of regen in order to keep you at that set speed, it'll even coast itself for any flatter parts. Now here's the part I'm confused about your explanation about the losses: even if the losses are compounded when regen is used, you're still getting something back. I mean, when you coast, you're losing less, but you're also not getting anything back, whereas, when you use regen, I would agree with you if you were *just* losing more, but you're also gaining stuff back, enough for it to not only make up for the losses, but more than that, so that you're in the positive, so isn't regen still better in that sense?
Nope. Trust me on this. Coasting is better in many circumstances.
You cannot gain more than is lost. That is gaining energy for free. Physics 101......
@@TechForumTesla If you're saying that if I drive up a hill, I won't get back all the energy I used going up going down the other side, then I agree with you, and if that's what you thought I was saying, it wasn't. I know that. Now correct *me* if I'm wrong, but now it sounds like you're saying that using regen has no positive outcome other than saving your brakes, that you don't get anything back? Because if so, I know for a fact that's wrong because we've driven up and over mountains with the Tesla, and while we didn't have the same percentage we had before we drove over the mountain when we got to the other side, we did have a higher percentage than we had at the top of the mountain meaning we did gain back energy going down the other side, even if it wasn't everything we use going up.
@@teslasnek you weren't paying attention to the video.
Using regen gives you back less than you put in (probably nearly 50% loss). Coasting retains 100% energy only dropping through friction, wind, etc. resistance, etc.
@@TechForumTesla Ok, that I 100% agree with, thank you! Now when it comes to using the cruise control going downhill (explained in 1st comment), I was wondering what your opinion is on that or if you've ever tried it, because most EV owners I've talked to have never thought of that.
Basically what I'm saying is that if I just put the car in neutral and coasted all the way down a mountain, I would end up at the bottom of the mountain with the same amount of energy in my battery as I had when I started at the top, whereas if I used my cruise control to regen all the way down the mountain I will end up with more energy at the bottom than I had when I started at the top. Having more energy than you started with seems like it would be better than just ending up with the same energy you started with, agree? Like I said in my first comment, I agree with you that costing results since you are losses, but when you use regen, even though the losses are increased, you're still ending up with *MORE* energy than you had!
When you drive in "regen" level your car (Ioniq 5) is regenerating energy even while you driving, but doing so it lose more energy than it produces, obviously. If you drive in level 0, there is no resistance and no energy los.
Best to drive on level 0!
To extende you range you mast plane you driving:
1. left your foot from the throttle and glid as long you are not slowing the trafic bihand, then
2. regen to slow, then
3 brake to stop.
Great video. Just the thing I was looking for. I couldn’t find any video of this topic on TH-cam. Thanks mate!
Yup, agree - and coasting is fun, and makes you a better driver/more in tune with your car and conditions.
Thanks Matt. 👍 A lot of people don’t understand the points you’ve mentioned.
Whilst I wait for my Model 3, here in Oz 🇦🇺 I drive a PHEV. I can get much further on my very small battery by using little to no regen- assuming of course that I don’t use the brakes (which takes a lot of anticipation.) Coasting is definitely much more efficient.
(The PHEV is great as it has flappy paddles with five different levels of regen, and also increases regen with gentle brake pedal activation before applying the brakes, and it’s a real shame the Tesla’s don’t have something similar.)
My guess is that regen is at best 50% efficient. That’s one good reason that different drivers can see a big difference in range whilst driving at basically the same speed - every time you dip into the regen area, (or obviously much worse still, use the brakes!) you’re losing range.
Cheers
For anyone concerned/confused, it's easy to just hold a speed, maybe easier than an ICE, but if you want to minimize regen or acceleration (true coasting), that is what is more difficult in an EV.
There is a different pedal mode that allows extremely heavy regen (I am talking 3 times or more regen than a Tesla) all the way down to a stop and it allows it to coast as if it was an auto gas car. All with one pedal.
It feels really wierd when you first go on it but it is very easy to get used to it.
I thought this is common sense. Didn't realize so many ppl don't even understand this. Good video to teach those ppl.
I have a Zero DSR, I commuted 4000Mi on the same trip
For me setting a 'coasting' custom mode let me coast down a 2 mile hill every day when commuting. It was much harder to manage in what I would call a 'road trip' mode, 100% regen on off throttle which gives a very progressive regen on negative throttle which is better over unpredictable terrain, not so much during that everyday commute, say less than 10% difference, but it's a more comfy ride w/coast on
The lack of coast hurts quite a bit in some situations, It will vary based on your elevation profiles though.
When you use regent, do the break lights come on. I just had a guy tell me I had no break lights when stopped. So when stopped maybevwise to look into the rear view mirror and tap the break pedal so they know you are stopped. Don’t know what to do about regen and break lights. Also if you are on auto drive and you’re set to (x amount of car cushion) if your car adjusts to keep its distance I don’t know if the break lights activate or not.
It is actually quite simple. Regen is MUCH more efficient than using the mechanical brakes. If you need to slow down and the Regen can accomplish that deceleration then use Regen as opposed to using the mechanical brakes. Regen will ALWAYS be more efficient than the brakes but there are circumstances where Regen can’t provide the stopping power necessary.
Coasting is ALWAYS more efficient than Regen because Regen involves the electrical losses that coasting doesn’t have. All other losses are the same between those two choices.
Basically you should Coast unless that doesn’t provide enough deceleration. You should use Regen in that case unless Regen isn’t providing enough deceleration then you should use the brakes.
Your first choice should ALWAYS be Coasting, then Regen, then brakes if efficiency is your primary factor.
On my Outlander PHEV manual braking charged the batteries why I always used coasting, zero regen. Can you set the amount of regen down to zero on the Tesla?
Nope.
When you drive in "regen" level your car (Ioniq 5) is regenerating energy even while you driving, but doing so it lose more energy than it produces, obviously. If you drive in level 0, there is no resistance and no energy los.
Best to drive on level 0!
To extende you range you mast plane you driving:
1. left your foot from the throttle and glid as long you are not slowing the trafic bihand, then
2. regen to slow, then
3 brake to stop.
you were straight on the point, good info
Thank you so much for this information, it was especially helpful the way you described what you were doing as you were actually driving and slowing down. Was wondering about this question, but it was a low priority; until I just watched a video about Hyundai's new electric and how it has a bias for coasting vs regen. I'm subscribed to your channel, and appreciate that you didn't parrot that annoying "thumbs up, share and subscribe"; I automatically do that for good content, as it should be.
I can refer to that with Prague electric transport vehicles (trams, metro). In theoretical and practical lessons you are taught to coast as much as you can. In case of older vehicles due to absence of regenerative braking (only rheostatic was present which basically same regen, but instead of putting energy back to battery or power grid you dissipate that energy into larger resistor banks to heat).
In case of both old and new vehicles prefering coasting is better because only aerodynamic resistance and friction are source of energy waste, however when you apply regenerative brake, more sources of losses become present (motor, wiring, traction/electric brake regulator, battery / power grid resistance). Therefore in case of going downhill it is suggested to accelerate only to about one half of speed limit and start using regen as you are about to exceed speed limit instead of accelerating to speed limit and instantly start braking.
Of course if you need to obey speed regenerative brakes does much better job than rheostatic or friction brakes.
I'd heard Tesla had sensors all around the car. And there's a feature for Automatic Braking. So just wondering that after the car slows down due to regen feature shouldn't it come to a complete stop BY ITSELF due to the auto braking as it gets too close to the car ahead....??
are you saying that you have to use Neutral on a Tesla to do coasting?? You don't have a Regen zero setting like most other EVs?
I would really like to know what the actual losses % are in the regeneration system but I have never been able to find a test of that.
This is exactly what I thought for my HEV, thanks for confirming my answer! 👍
Thank you for this explanation , I had this question for a while and couldn't find the answer . Next time I will just ask you ☺️.
Is there a way to disable regenerative braking?
How many levels of regen electric cars have? The highest level it's like driving a ATV ?
Great video. My wife drives that way in our ICE cars. More so in her manual Chevy Cruze Eco. You noticed the other Model 3. My wife noticed the classic that drove by at 1:04-1:05. I was wondering if it is a Chevy Bel Air.
Matt, what occurs with the regen/coast when you put the car in autopilot / normal cruise modes?
Hi so if your driving and you hold the stock up into neutral you can just push back down into drive with no issues while rolling ? thank you
Yeah there is in gear box
Yes, the is correct.
Yup, agreed, coasting is a bit better in some situations, but not by much in my BoltEV. And unless I'm trying to make max range on a long trip, I don't really care about efficiency. This thing is so wonderfully efficient, I don't need to optimize it. So much more efficient than all the vehicles around me - that's for sure... Most of the time I drive for time saving. Quick starts and quick stops get me way ahead of the traffic and save significant time (and it does it so effortlessly). I don't have to be aggressive or rude either - this BoltEV really does bolt through traffic. Everybody else is gingerly trying to speed up and slow down in a futile effort to save on their old paradigm fuel costs - I focus on trying to judge the right point to jam on the regen and come to a stop at the right spot maxing out the regen energy after staying on speed as long as possible. (traffic permitting of course). The BoltEV's one-pedal mode works beautifully, you never need brakes and the regen braking is ten times what my old Prius did.
Now - driving reminds me of the time I traveled in the Philippines where the roads are clogged by all manner of slow transportation and anyone driving a rare new vehicle spent all their time dodging in and around in an effort just to maintain 50kph.
Battery electric drive is just flat-out a superior drive system for vehicles. Don't miss out....
Come on, this is not so complicated: regen is like engine braking (with appropriate downshifting) in an ICE car, only with partial reclaiming of energy. Coasting is the same in both ICE and EV cars. There is a slight difference in how one commands those regimes (no shifter not clutch in EVs), but the function is the same.
BTW, I like paddle-adjustable regen levels pretty much everyone but Tesla uses. Perhaps it is not strictly necessary but makes driving more fun (and you can always leave it on "auto" (o: ).
I don't know what the Tesla gets, but I only get about 10% back If i'm lucky in regen, so if you want to hypermile a commute your calculations will change when you hammer it off the line every chance you get =P I know my subaru only got 24mpg hammering every line, The Zero is free next to that... $0.01/mile hammering the slow speed limit commute.
@@cliff4377 I think that Tesla can theoretically regeneratively brake with about 60kW into the battery - kinetic energy absorbed must be greater, with the difference going to heat. Now, how large the difference is, I have no idea. But, of course, driving smoothly, at a constant speed, will always be more energy-efficient than accelerating and decelerating - heat losses cannot be avoided.
@@bazoo513 agree
If you are going from 50 to 40 over half a mile, you put energy back in the battery as you slowly let off the accelerator. Over the same distance and speed change, if you coast in neutral, you don't put any energy back in the battery. So I don't see how coasting in neutral is more efficient. There is no case I can see where putting in neutral is going to improve your overall efficiency.
You will coast further in neutral. Laws of physics can’t be bypassed or broken.
@henryw4129 It really depends on how long you can go at a higher speed or how long you are willing to go under the speed limit if approaching a reduced speed. If you see a reduced speed sign or just a lower speed sign ahead, you can't coast long before needing to apply a brake. That ends up using more energy overall as you lose the regen. Also, I attempted to coast going down mountains in Pennsylvania shortly after seeing this video last year, and the car still reduced speed (probably due to rolling resistance). It was a steep enough grade that there were emergency offramps for semis and warnings about the grade. Then had to go back into drive to accelerate to maintain speed. This is risky because there are rare times where you need to accelerate on demand to avoid dangerous situations. Having the extra step of switching gears would possibly end up in a rear end or side collision in those types of cases.
I've also had tried normal routes with coasting after getting the S3XY buttons which allow you to set 0 regen on Tesla as one option and compared my overall energy usage to normal chill driving and had different results from this channel. The end Wh/mi was slightly more in the coasting model and I concluded the risk and extra steps were not worth it even if some other environment variable (like change in temp, wind resistance, drafting effect from behind vehicles, etc) caused the regen to win in my own tests.
15% is the energy back to the battery so you have to travel 15% longer coasting which is slower. Just use regen
nah that truly sucks coasting is vital i don't wanna break for no dang reason instead of wasting energy having to keep on the gas. another reason these cars are trash
Manual driving vs autopilot driving efficency Test?
Manual driving is better if there are cars in front of you.
I coast a lot with my ICE car, too. It is basically the same thing except I dont have regen and coasting is not as good as EV, because engine has friction too. Still if I hypermile my Coralla I can do 45-47 mpg. But the efficiency Of Teslas are outstanding.
So, EPA rating of my corolla is 36mpg but I can get 47 mpg with hypermiling. I wonder what people get out of model 3 sr+. EPA range is 250miles. Can anyone stretch that to 300miles or something?
Why not use the cruise control (not talking about autopilot) and let the car maintain your speed!
Believe it or not, maintaining a consistent speed is not the most efficient way to drive on uneven roads. That is only best on a consistently flat road.
It is actually best for efficiency to speed up as you go down hill and slow down as you climb a hill. Cruise control does not do that.
@@TechForumTesla It would be nice if they include this fully in autopilot; "New update: auto-coast feature added. The car will use its sensors to predict the terrain and other traffic and adjust coasting/regen to maximise efficiency". (Yes Elon/Tesla, you can use that name, be my guest)
On rolling hills an option to select a smarter cruise control mode could be a real winner. For example if you set your cruise control to 60MPH, allow the car maintain 55 miles an hour if it detects it is going uphill then on the downhill side allow it to coast (in neutral) up to 65 or even 70MPH (you could get a ticket) if downhill speed exceeds 65/70 speed engage drive mode and use regen. If downhill speed does not exceed 65/70 continue to coast until 55MPH is reached on the next hill then switch from neutral to drive mode to maintain 55 until the next downhill road section.. The parameters of 5 below going uphill and 10 above going downhill could/should be selectable parameters. Basically have the cruise be smart enough to switch automagically in/out of neutral/drive and use regen when necessary to keep the downhill speed safe. All of this could be done by the driver but would not be very relaxing way to drive. Having this cruise control option should extend range and not add much, if any, travel time to the trip.
Hyper Mile mode
Does Pulling N damage any EV in any way ?
Wow! Learning something new every time I watch your videos! Thanks so much. Liked & Subscribed👍!
Very helpful info thanks
Great info. Currently driving a Civic with manual trans, lots of coasting going on here/ great mileage. Saving up- to someday pick up a beautiful tech heavy Tesla, -got plenty of Tesla stock so its only a matter of time :) .
you just burn fuel in neutral 🤣
There is no "energy savings" in regen...or in coasting. Both are attempting to deal with the same problem of friction loss of energy but in different ways...one by creating friction(regen) the other by keeping friction to the absolute minimum(coasting). "Energy savings" can only come from the type of driving system (pure ice/hybrid/bev) and way the vehicle is designed and most importantly driven/type of traffic.
Super(or "ultra") capacitors offer a way to enhance and perhaps dramatically so "energy harvesting" from the reality of brake horsepower. The only two platforms that specialize in this are wind turbines and City Buses that I am aware of. A good primer is Maxwell Technologies of which Tesla just acquired.
Do model 3 drivers really wave to each other like that? Weird.
Very strange. For this reason alone I wouldn't buy one. Who wants random weirdos waving at you
Do you use standard regen or low?
Standard
Ahh okay I was debating to which one was best. The standard at first was a bit much for me but I got used to it now
@@Jujub826 Definitely best to get used to it, makes the car simpler and more efficient to drive. Feels weird going to anything else once you adjust!
Dom G you’re right I’m getting used to it now and learning how to brake with it
Once you are used to and drive an ICE feel so strange. You expect to slow down when stepping off the gas pedal and does not brake.
I think coasting in neutral will be less efficient when you factor in the gearbox repair bill. I’d never consider doing that in my Volt (which nearly coasts while in “Drive”). I drive in “Low” (moderate regen) and can stop without using the friction brakes due to the Volt’s super regen paddle.
Uh, coasting is not bad for the gearbox.
How would coasting hurt a single-speed gearbox any more than regen or driving under power? Makes no sense.
No gearbox, it's electric
@@cliff4377 Wrong, Tesla's have a fixed single gear gearbox. No transmission though.
@@domg7359 There is no gearbox there are reduction gears
Freudian slip: "the speed I want to speed".
Coasting: In high school, it’s what you did on last bit of pavement back into your parents driveway after curfew.
The model 3 doesn’t have regen when using the brake pedal? Pshhhh, I thought this was a high tech car. I am gonna get the Hyundai kona with a hud.
Imievs have a sports mode one pedal driving. It is way better than the Tesla. You can even do a hand brake turn with the accelerator pedal.
th-cam.com/video/2XYVYEUW_jo/w-d-xo.html
Regen puts more charge into the battery than coasting does.
6:44 coasting is more efficient than regen. always on regen, helps the po..LESS efficient drivers.
Yes I hate the way the tesla Regens I don't like having my food on Gas all the time
Coasting is always more than twice as good as regen
When you aren't first to watch but first to comment 😎
Driving in neutral is illegal in most states!
there is no clutch, it's software choosing not to harvest momentum.
And both are better than ICE and just using the brakes. Which just feels so cruddy, and primitive after diving an EV or plug in with regen.
Driving at speed with other cars around in neutral is dangerous. Have you ever driven behind someone trying to hypermil? Its infuriating and dangerous. If you're so concerned with efficiency, go ride a bike or carpool. It encourages poor driving etiquette and at that point it just becomes all about you. 99% of hypermilers dont do it right.