Range Efficiency Explained | Even Most EV Drivers DON'T Know About This
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- เผยแพร่เมื่อ 9 ก.พ. 2025
- When comparing electric vehicles, it can be difficult to know where to begin. And it's easy to view them as just a different style of traditional vehicles. But slapping in a bigger battery isn't the way to make a vehicle more efficient. So please stick around as I go into detail around in Range Efficiency Explained.
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#ev #evcharging #rangeanxiety
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Your description of range was actually a description of efficiency
I can confirm all that you have said here, and it is interesting how much your range can be boosted by simply taking things a bit easier.
I used to get about 8l/100km on my Citroen Jumpy (sold as the Dispatch in the UK), but I completely changed my driving style and ended up getting less the 6,8l/100km.
On one occasion I managed to get from Catalunya to Cambridge on a single tank of fuel (80l). Nor was I going particularly slowly.
hi David we cannot change the design and build elements but can definitely make a big impact by the way we drive. interesting to note Wales is reducing motorway speed down to 50mph in many areas. more people will find out the benefits of longer range and fewer charging sessions, Dave
@@davetakesiton Mmmm. I used to habitually stick whatever I had at the national speed limit (120kph in Spain) But dropping that to 100kph (62mph) just made so much difference to consumption that I rarely get close to the limit these days.
Yet on B roads I limit myself to 90kph, but the trick is simply not to slow down! Not slowing down unless absolutely necessary increases tyre wear a bit, but seriously improves economy. And it is a rare day when I don't overtake more cars than cars that overtake me. And my journey times have hardly changed at all.
@@davidcolin6519 Great tactics, David. Why waste money? I find I don't use really harsh acceleration but I am a quick driver like you, Dave
Thanks for the video Dave 🙂
Nice to list the efficiency of the different key makes of EV!
Thanks Susanna, nice to hear from you again, Dave
I’m also looking for high efficiency over a huge battery in my next EV - a respectable 50-60kWh will be fine as long as it can do ~4miles/kWh which is what I’m achieving with my 39kWh Leaf.
Hi Clark, thanks for your comment, totally agree. I put efficiency right at the top of the list, just fractionally above maximum charging speed, if I do regular road trips. If I use it only ever to commute my list would be very different, Dave
Another vote for miles per kWh. The European way is almost meaningless to me.
Hi Richard, a man after my own heart. Metres, Kilometres, grams, Kilos, why did we have to change, Dave
What’s the European way?
@@adisurd as mentioned in the video. U.K. does mpg Europe does litres needed to go 100km.
And in electric cars it’s kw needed to go 100km. It’s another way but somehow meaningless.
If my car did 4 miles per kWh and I have a 50kWh battery, then 4x50= 200 mile range. Easy.
Sorry if this is teaching to suck eggs. All the best.
@@DumfriesDik I wasn’t aware of the kWh per 100km thing. But yes, I myself like to see the efficiency in Wh/km. I don’t do that for estimating range but to see how efficient specific rides were. Especially ones for road trips and highway use.
I do see liters per 100 km setting in my ICE car but I quickly changed that to km per liter, again measuring efficiency. Also helped estimating fuel costs for road trips.
@@adisurd I may well have the European thing wrong as I don’t use it sorry.
4.3/5.0 with my Hyunday Kona 64kwh😁😁👍👍'21 model
Go for it, Brian I’ve heard nothing but praise for these great EVs Dave
Thank you Dave great video, that said it takes a lot of work to really get a good
understanding of all the stats available out there. Below are my findings which has
a somewhat different look to yours so it can all come a bit too much and best just
use as a basic guide in my view.
THE REAL WORLD MILEAGE OF UK EVs.
Top 10 Efficiency (not range) EVs in the UK MAY 2023:
MILES PER KILOWATTS -
1. Tesla M3 SR = 4.34
2. Ioniq 6 = 4.12
3. Tesla M3 LR = 4.00
4. BMW I4 40 = 3.96
5. Hyundai Kona = 3.95
6. BMW I4 35 = 3.95
7. Megane = 3.91
8. Citroen C4 = 3.88
9. Fiat 500e = 3.88
10. Vaux Corsa = 3.88
1. Tesla M3 SR = 4.34
2. Tesla M3 LR = 4.00
3. Tesla M3 P = 3.80
4. Tesla Y SR = 3.73
5. Tesla S Dual M = 3.73
6. Tesla Y LR = 3.6
7. Tesla S Plaid = 3.61
1. MG4 SR = 3.80
2. MG4 LR = 3.72
Whose to testify to my list accuracy above! Just view as food for thought.
Yes Stanley, there are so many competing charts of best range efficiency, etc difficult which to choose. I suspect they hover around similar figures, but I ignore the " I just got 6 miles per kWh" personal stories. General thought; purpose built are generally lighter and lower drag, some motors, Tesla VW are brand new and slightly higher efficiency and performance. Even a 2% difference makes a difference, Dave
Have to disagree with your estimation of the Nissan Leaf efficiency, in the 18 months I've owned my 2022 40kWh I have only dropped below 4 miles per kWh on a couple of occasions and that was in sub zero temperatures last winter, now in the current warm temperatures I've been consistently averaging 5.2-5.4, admittedly it's all below 50mph and I'm no boy racer. Did a long road trip (370miles) last summer which was about 70% motorway and still averaged 4.2. I do get a lot out of regen with correct timing of lifting off approaching intersections/traffic lights etc and minimal friction brake usage, used to teach proper anticipation and minimal brake usage in my 38 years as a driving instructor.
Hi Steve, thanks for your input. Stating miles per kWh is definitely a minefield. Over a 2 year period I have averaged almost exactly 3 miles per kWh, but on one specific drive recently I achieved over 5 miles and today at a constant 50mph on an empty motorway I got 4.2 miles per kWh over an entire 60 mile journey. If I drove in city style stop start commuting I would not get those same figures in my car. Driving style is a key element, but only one of many. I appreciate your input, your data is useful. Actual figures always help, Dave
You consistently confuse range and efficency throughout this video. Range is not how far your car can go on a set amount of fuel, that is efficiency. Range is how far your car can go on the amount of energy it can carry, e.g, mpg x size of fuel tank in gallons, miles per kwh x number if useable kwhs in battery, etc.
yes, I stopped watching after 35 seconds because of this
Hi Alberto, yes, you are right, but also not, it is not so simple.Your range comment maybe a pedantic difference. The set amount of fuel chosen could easily be a full tank or a full battery, so that would then be overall range. BUT! A very careful, slow driver would get more miles per kWh from an seriously inefficient car than a racing style driver might get from a very, very efficient car. The miles per kWh achieved by them both could easily be reversed over what the core design and build efficiency would indicate. Actual miles per kWh can mean almost nothing unless the driving style and course driven and climatic conditions are all identical I said it was complicated, Thanks for your comments, they are welcome, Dave
Hi Redshift, maybe change your mind if you read my reply to Alberto's comments, Dave
Hi Gary, the graph shown is, as I described in the video, a seriously over simplified illustration of a typical charging curve. If you wanted an exact graph for each specific car, and then expected me to go out in each specific car and tested them in the real world, you are definitely watching the wrong channel, Dave
@Dave Takes It On
A couple of points in response
i) it's not a pedantic point, it's quite simple really. Range is distance, specifically how far you can go (in units of miles, km, or whatever is your preferred measure of distance). Efficency is always a ratio, in this case either how many units of energy to go a certain distance e g. Watts hours per mile, or how many units of distance you can go for a unit of energy, e.g. miles per kwh. Both are valid measures of efficency and which you use is largely a matter of personal preference (I prefer miles per kwh, but each to their own).
ii) Although driving style does affect range in general mixed driving, what most people are concerned about when talking about range in evs is long distance driving and how far you can go between charging stops. Most long journeys take place largely on trunk roads, e.g. motorways and major a roads, and at fairly constant speeds for long periods of time. Under these circumstances the effect of driving style is fairly moot. The major impact on efficency on these type of roads is your speed (areo drag dominates energy consumption at highway speeds) and your speed is in general constrained, you can't drive much faster than the speed limit or the rozzers/gatsos will get you, and driving much slower than the speed limit/prevailing traffic on these types of roads is difficult if not actually dangerous. So car efficency (at these speeds this largely boils down to areo drag in most circumstances) and battery size really govern range in practice.
An EV's "range" is more important than people may realise. The battery life is likely to be a function of the number of full charge cycles therefore the further the car goes between full charges, the higher the potential mileage before the battery degrades and the car's end of life.
Hi Rhian, I agree but the vast majority of us have sold or traded in our car well before a modern battery should begin to show signs of misuse. Many people do not care enough about ICE car servicing and oil changes, I fear many will not worry about extending the battery life after they have sold it, Dave
My electric car is shown high mileage even if I'm driving short distance
What the difference between distance mileage and total mileage
I travel 10 miles and it show on the total mileage I travel 50 miles