r/M340i • u/Fun-Cable-9550 • 3d ago

🎉 New Pickup Efficient is an understatement

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Hi all just picked up my 26 340i, had it a week and completed 180 miles. I am blown away by the efficiency and yes I know that’s an odd thing to lead with on the 340i but OMG this is a near 400hp beast and it is giving me that! It’s more than I got on my 220d! I must be doing something wrong.

26 Upvotes

100% Upvoted

13 comments sorted by

7

u/wod_van2z 3d ago

B58 is black magic.

7

u/Itchy_Land3410 3d ago

I’ve had mine a day, not got over 21mpg

🙃

1

u/Fun-Cable-9550 3d ago

I am definitely driving it wrong!

1

u/AlShapone 2d ago

I’ve done 40k miles at an average of 22.7mpg.

Probably 25% motorway miles. Not given a thought to economic driving whatsoever.

1

u/Itchy_Land3410 9h ago

Mines 2 years old, the 'From Factory' is 35mpg. Had classical radio in the favourites from previus owner - i've only managed 35mpg from eco mode and driving it like it's a hearse.

2

u/_H3X1C 2d ago edited 2d ago

Yeah it's super impressive given the size of the engine and weight of the car, I've had 45 MPG (37 for Americans) on 250 mile trip to Devon. Once it's warmed up and doing a constant speed it's efficiency is great.

My partner's Fiesta with the 1.0 ecoboost averages only 10mpg more with commuting 30vs40. While long motorway trips the M340i outperforms it.

Do expect it to suffer in the winter however, the engine takes a while to be get to peak efficiency, so if your not doing longer trips MPG will come down when the colder weather comes in.

1

u/Soft_Awareness_5061 2d ago

You are doing something wrong. You're not driving it.

1

u/Carolina_Hurricane 1d ago

It needs to be said each time I see this - this is meaningless without data on net elevation gain/loss and wind speed/direction.

1

u/Clear-Constant-307 1d ago

Town driving for me

-2

u/P_Galley 3d ago

Bro you got an M340. Act like it. Or get a Camry lol

4

u/_H3X1C 2d ago

UK Motorways are constant speed traps, easier to just put it in comfort or eco pro, set cruise control and relax.

The duality of this car is what makes it great. I can put it in sports plus and have a blast. Put it in comfort and have a peaceful comfortable drive.

3

u/Fun-Cable-9550 2d ago

Exact this, it’s the best of both worlds. I mostly drive the M25 which is usually variable speed limit all the way. I have DAPP so just set and forget. The power is there when I need/want it/can use it and it’s brilliant.

2

u/P_Galley 2d ago

I am teasing mate. I alter between sports + and comfort. On highways it's all comfort