2021 3-Liter Diesel Suburban Highway MPG Test Blows Away Our Expectations!
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- เผยแพร่เมื่อ 19 เม.ย. 2021
- Kyle tests the inline 6 cylinder Duramax Diesel Chevy Suburban in our typical loop-style 70-MPH highway fuel economy test.
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I have a 2020 Denali 1500 with the 3.0L and it is amazing. I can easily average 27+ MPG on long highway trips and typically average right around 25MPG on my daily mixed driving where I drive 19 miles each way to work on back roads at 50MPG and under with lots of stop lights. For the auto stop/start if you have the AC on it won't turn the truck off unless it's at temp and you'll find it will kick the engine back on if the temp inside drops. I can attest that running with auto stop/start is good for at least 1 MPG of average if used. The 3.0L Duramax and the 10 speed trans is quite possibly one of the best pairings GM has ever offered. I just wish more people would adopt it. I had the Colorado with the 2.8L Duramax prior and this truck actually gets better mileage.
My partner has a 2016 Audi Q7 3.0L diesel and she regularly gets over 38mpg US on her highway run to work in Manchester UK.
Dude thank you for verbalizing all of your actions and the reasoning behind it, and also verbalizing what you are ABOUT to do, and what is happening too. It really helps engage the viewer without wondering what the heck is happening. I’m subbing after I post this comment
Never mind I’m already subscribed hahaha
In the roadtrip in which your lost footage had rain but no bugs,so I cannot believe it a Out of spec road trip
As with most start/stop systems when the cooling is set to max the start stop is disabled.
I live in southern california san diego area and i search for one of these beasts with the diesel engine and nope you won't find any, is like they been snatched by everybody, I did saw a couple but with 30k miles and priced at 82k I was like dude wtf that's like buying it brand new LOL Plenty of gas guzzlers but none of them diesel engines sadly.
Couldn't agree more - how a vehicle this expensive doesn't have super cruise is a mystery.
Can you provide link to your exclusive interview with GM regarding the diesel engine. can't find that video
There are some minor things they could improve especially with the controls and the dash look and using all led for the exterior lights. Other than that, it’s super sexy and the diesel is great.
5/6/7 suburbans growing up must be nice I’m trying to get on that level respect
Great video, thanks!
Great review! Thank you.
You should try to test the BMW X5 30d (diesel in line 6 with just a tiny more hp and torque than this Suburban). You will amazed about power delivery, fuel efficiency, torque and smoothness. Too bad that you don’t get these in the US despite the fact that they are made in USA 🇺🇸
Amazing car and so cheap to run! Nothing can beat a diesel if your car weighs over 4500 pounds. EVS are coming and are getting great but I’d rather cruise 650 miles on a fuel tank in my X5 than having range anxiety or planning my journey like a complicated battle.
Glad it has super cruise now . 2023 🎉
Need more Diesel vehicle reviews on this channel. Awesome MPG, quick filling, loads of torque. I prefer it to EV every single time.
i have an old 6,2 diesel Suburban, i can get 30mpg on that :P
I have one too. Do you have the thm400 transmission in yours? What speed to you run to get that mileage?
How is the passing power of that engine? Let’s say you get stuck behind a truck or Winnebago going 65 in a 70, traffic in the left lane is flying by at 80+ and you have a split second to dart over and punch it. Is it gonna fall on its face and wind itself out like my father-in-law’s minivan when it’s loaded down? Right now I’m spoiled with my F150 with the 3.5 Ecoboost. At any speed, even if I just lightly tap the throttle I get afterburner-like thrust. But I’m really curious about the diesel Suburban as a long range cruiser.
highway passing is amazing with the 3.0L diesel. at 80 you are roughly 1500 RPM so you are right in the heart of peak torque. I will say if you are towing and at 80 then it is the opposite, it does not accelerate well at high speed with a load. And again that's because when towing and driving 75-80 you will be sitting closer to 3000 rpm and you just don't have much left at that RPM.
Beautiful.
This truck already has stop-go ability. Considering Mercedes Benz GLE 350 de is a Diesel PHEV produced in the USA but sold in Europe that means a Diesel PHEV would be ideal for such a large vehicle. Consequently General Motors can use this platform as Chevrolet, GMC or Cadillac to offer a Diesel PHEV for the USA market.
Most automakers don't really like diesel hybrids since the Atkinson cycle gasoline engines used on hybrids provides a similar fuel economy to a diesel engine, and the primary advantages of diesel engines (such as low-end torque) are satisfied through the electric motors. Also, gasoline emits 10% less CO2 per amount burned than diesel - with a conventional powertrain, the efficiency gains of diesel engines are more than enough to offset that, but with an Atkinson-cycle engine with similar efficiency it's measurably lower, so the vehicle has lower CO2 emissions numbers as a result. Also, in Europe diesels are more popular and as such diesel fuel is cheaper, but here in the U.S. automotive diesel is more expensive due to lower demand, so the per-mile cost of a diesel hybrid would be higher than a gasoline hybrid.
Watching this video with 3.11 diesel and 2.79 gas just hurts in May 2022...
When on 1 tank of diesel you get 600 miles and 1 tank of gas you get 300 miles it doesn’t “hurts” as much 😉
Is this Nathan from TFL in disguise? Lol.
no ev? and what motorcycle is that?
The filler necks can only take so much at one time. I wonder why don’t various youtube reviewers just just the first click of the 3 available on any fuel nozzle and go with that method.
If your worries about time fill fast at first then switch to the fist click
Hey, what's the payload on this? I haven't finished watching this yet, however one of the most important things for people buying in this segment (especially if they take the diesel) is the payload amount - so that they know they're within the legal limit if towing with passengers. (tongue weight etc) - can you pls post what the payload sticker says on this model? It's a 4wd correct?
wow, that is 16,5km on a liter. (6l /100km) That is great for such a big car.
Does the tahoe/surburan take D.E.F ?
Yup!
FYI, '85 had a Diesel, but it was a dog. still got 20mpg on it though, consistently.
My dad had a 1986 Suburban diesel (6.2L). Long term engine life wasn’t as good as our Japanese and German diesel car motors. But at the time, the 20 MPG on diesel- which was cheaper than gasoline prices back then- was more efficient than the gas Suburbans that tended to get 9-12 MPG.
I just bought a Suburban, but I hate all the driving aids. They are more annoying than helpful. If I could go back in time, I would step down to an LT without the nannies.
Does the LT still have leather?
Same. After buying my 2021 Escalade almost 3 years ago looking back I would've been perfectly happy with a suburban Lt with the 2k luxury package and nothing else. Has everything you actually will need and use and none of the other crap you pointlessly spent extra for.
I’m waiting video about engine) now I have Escalade 2018MY 6,2 in russia and may be want to change it to diesel.
32 mpg for a tank, from the European point of view, is truly great.
But I suppose that in the city the mpg value gets much much lower.
Some diesels are actually great in the city, usually about half of highway, but the torque helps mileage a lot
About 25 in city, which is great
The baby Duramax is the 2.8 litre
Man I bet that thing is a wind sail in the wind in Wyoming.
Bro, you got like 2k lbs of dirt on that thing, not a fair test. Lmaooo Wash Me!
Why would someone buy 7 suburbans
if the fuel gauge in the suburban said it was full then you were full doesnt matter what the pump does or says ????!!!!! it only shuts off alot on a high flo fuel pump because of the fuel splashing back and hitting the shutoff on the fuel fill nozzle the filler neck cant handle the flow on the high flow pumps at full pressure i should know because i have a 21 suburban LS with the diesel and use the high flow pumps all the time no issues
You should weigh it to know exactly how much the car consumed
Put that engine in a big sedan and then see your mpg 😉
😘 this vehicle and for it's size and weight the m.p.g is astonishing as apposed to the gas ⛽ engine eqivelant? No contest 👍👍😂. diesel ⛽ engines will be around for quite a few more years .? What does most trucks around the world 🌎🌍 run on ? Diesel ⛽???. unless there has suddenly become overnight a alternative powerful electric version engine 🚂 for heavyweight trucks ect ECT. I await your answers 😁. just a comment.
Start stop makes no sense on a diesel, they idle so efficiently.
I hate...yes, strong word hate..I am using the word hate here, the push/pull buttons for transmission. It's a truck. Bring back the shifter.
😍😍❤️❤️
If you screwed up, why did you post it and waste my time?
I was literally thinking the same thing. Clearly we were the only ones that watched the whole thing. “My math says 22mpg, but the computer says 32mpg so I’m going with that!” Real scientific bullshit.
Can this engine run with 92 octane
Yes
Absolutely
Diesel costs on avg $1 more per gallon than gas....there goes any savings for that higher mpg than the gas models.
😢😢😢😢😢😢😢😢😢😢
50 mph to 55 mph is best for mpg