Which car has the greatest range?

I never cease to be amazed at my BMW 435d xdrive auto, doing over 600 a tank - real life, Ive done 595 when the warning light came on so probably 650ish. Bearing in mind it only has a 60 litre tank and it is 300+BHP and capable for sub 5 sec 0-60.

Over the past 9000 miles it has averaged 41mpg motorway, local and hooning. I'm more than happy and more than impressed.

Honesh John MPG ( https://www.honestjohn.co.uk/real-mpg/ ) says 40.3 - which ties in quite closely to my experience.

This is a good site to 'level' peoples experience over the manufacturers headline values.

We have done over 350,000 miles in Mercedes V6 E320/E350 diesels over the last 20 years, they all seem to have averaged out at 42 mpg/600 miles on a tank. The last one was a 2018 E350 CDI that was very frugal in relation to its performance.

I replaced that with a 2023 Mercedes E300 Diesel hybrid estate that might? have a 2l diesel. That seems to be doing 57 mpg/750 miles on a tank and feels quicker that the E350. It is good but I wonder about its complexity and therefore its future reliability.

I would be interested to put a basic E220d estate next to a hybrid E300d estate (same engine I think) to see if one is more economical than the other. I suspect the old fashioned non-hybrid car is probably better on fuel over a long journey. The hybrid has to carry around a heavy motor and battery after all.

I suspect "Peak Car" will be looked on as the old fashioned 2.0l turbo diesels as fitted to everything Audi/BMW/VW from around 2000 to 2015 without all the hybrid malarky added.

Having run most variations ie A3/A6/Passat/Golf/320/520, they all had a great blend of range, power, torque, economy and reliability.

Their demise will be greatly lamented.

One of the larger VAG cars (so larger tank) with the old PD diesel has to be a good bet.

18 miles to school in t'snow, I tell you! :rules:

You get my point though. Nobody who buys one will ever see the 800-odd miles that Merc got in the African heat doing 40mph.

I'm thinking some highly tuned v8 might have the best range, all the way from a lumpy bass beat at tickover through a more cultured mid range bellow to a high revs symphonic scream....oh, wait, not THAT kind of range....

The E90-era BMW 320d EfficientDynamics has extraordinary range for the type of car it is. For the uninitiated, it's a 320d with the same type of motor (N47) as the 184bhp version, but with the fuelling and boost clipped at 3250rpm so it makes a peak of 163bhp but still 380nm of torque, leading to a cycle-beating CO2 figure of 109g. It has the final drive from the big petrol cars (335), so has interstellar-length gear ratios, and it runs on 16" wheels with non-runflat eco tyres from the factory, suspension ride-height 15mm lower than standard, but the same stiffness as the SE model (so, actually quite soft).

In combination, the lower drag from the wheels/tyres, and the lower aero drag from being lowered means that the car has very nearly the same top speed as the 184bhp 320d it's based on, despite the missing 21bhp - there's only 3mph in it. Given the lower drag, I think it's reasonable to surmise that with the regular 184bhp motor it'd actually be the faster car.

The owner's handbook says it has a 61 litre tank but it's got to be more like 66l based on the fact I've put 65.something litres into one.

At a steady 70mph (74-indicated on dash, 70mph on GPS) it'll typically do about 70mpg, which is about 1000 miles, in about 14-15 hours.
If you were willing to drive at 57mph indicated, 54mph GPS, that would equate to around 84mpg, 1200 miles in about 22-23 hours.
Both of those would need the weather to be dry and warm.

I've done the former mode of driving of these from MK to Munich in one hop, with just a stop for the tunnel. That's about 750 miles, the car was showing about a third of a tank left when I arrived. The fact it'll lug itself from 0-60 in about 8s and do 143mph means it's got quite a wide range of ability; it's not like you're doing 140mph every day but it does show how far within itself 100mph on the continent actually is.

This stuff has been discussed before over here if you care to peruse. https://www.pistonheads.com/gassing/topic.asp?h=0&...

You're right.
The EQXX is an incredibly inconvenient car for those who like to blather on about 'weight' and 'range' and diesel supremacy.
Best play the man.

So up to 300 miles less than some of the diesel barges mentioned then.

Very strange definition of "sewn up" but it takes all sorts I guess.

I have a GLE 250d (2.1 not 2.0) and when I fill it it shows about 830 miles. Motorway cruising returns about 43 mpg, same tank as yours.

I’m happy if I get 160 miles from a full tank.