[335i nthehouse]

Ran a months worth of fuel data through a crunch today as my mileage upped to 3000plus business miles a month for a while

I am now doing 90% motorway and was surprised at how low the mpg was - don't know what I was expecting

Lowest fill up 30.7 mpg and highest 32.7. My average has always shown on computer as just below 30 so I though motorway would be nearer high thirties

Been trying mix of regular and super unleaded and results seem mixed - the highest was a super reading but so was one of the lowest - but have been switching between two

Going to do a few runs dedicated super to see the effect

May also try a week of eco pro and see what happens but fuck me that's boring (I did ten minutes and was struggling )

Just thought I'd share the findings

[dopper99]

I think you should change the thread title to 335i real world mpg!

Else people will think it's about the 335d.

I'd have thought those mpg figures sound about right for an N55. It's not as efficient as the B58 340i.

[teaston]

Sounds like good mpg for a heavy car with an old 3l turbo petrol engine!

[mikeoz]

Originally Posted by dopper99

I think you should change the thread title to 335i real world mpg!

Else people will think it's about the 335d.

I'd have thought those mpg figures sound about right for an N55. It's not as efficient as the B58 340i.

Thought it was a diesel thread given mpg title? Obviously not.

[225]

Not bad for that lump I'd say. It does show how far technology has come when the x40i engine gets much better mpg than the 335i plus being a bit more powerful.

[335i nthehouse]

I'm not saying it's bad - I've been bloody amazed since I have it

I think my expectations had become unrealistic as I'd nearly hit thirty mpg with fairy frequent squirty noisy accelerations

The car is a marvel - I can't believe I still have it - 4 years in June

[335i nthehouse]

Yes it is a bit of a diesel owner thing to do, banging on about mpg

Soz

[MattOz]

My F31 335i manual wouldn't achieve more than 28mpg, no matter what I did. You're doing well in the 30's

[tjlees]

it's 300+ bhp 1.7t - enjoy!

however every morning from cold, my 335 gets ..

[Mottok]

Anyone post some figures for their 335dx? Just got mine and what I was predicting is a bit mixed. Filled up just south of London with £72, arrived in Edinburgh with quarter of a tank remaining but was in Eco pro for most of the drive. Doing a 15-20min commute, 10% urban and the rest dual carriageway, driving like an old man (like really really carefully) I'm only just getting 40mpg, thought I would be doing better than that? I know as soon as I start driving 'normally' (not mentally) it will plummet, didn't expect that, thought it would be around 40-45 easy with normal driving. Anyway, your shared experiences would be most welcome ta.

[NotGotABimmer23]

Originally Posted by Mottok

Anyone post some figures for their 335dx? Just got mine and what I was predicting is a bit mixed. Filled up just south of London with £72, arrived in Edinburgh with quarter of a tank remaining but was in Eco pro for most of the drive. Doing a 15-20min commute, 10% urban and the rest dual carriageway, driving like an old man (like really really carefully) I'm only just getting 40mpg, thought I would be doing better than that? I know as soon as I start driving 'normally' (not mentally) it will plummet, didn't expect that, thought it would be around 40-45 easy with normal driving. Anyway, your shared experiences would be most welcome ta.

I used to get 33-37 on my 12 mile morning commute depending on traffic. 45mpg on a long motorway run.

[Jeff123]

Originally Posted by Mottok

Anyone post some figures for their 335dx? Just got mine and what I was predicting is a bit mixed. Filled up just south of London with £72, arrived in Edinburgh with quarter of a tank remaining but was in Eco pro for most of the drive. Doing a 15-20min commute, 10% urban and the rest dual carriageway, driving like an old man (like really really carefully) I'm only just getting 40mpg, thought I would be doing better than that? I know as soon as I start driving 'normally' (not mentally) it will plummet, didn't expect that, thought it would be around 40-45 easy with normal driving. Anyway, your shared experiences would be most welcome ta.

I don't think that it will plummet that much. Eco Pro is crap, I never use it.

These cars just take forever to warm up, even in summer. Thats the key. On a 240 mile trip in summer, driving as hard as conditions allow, I got 47mpg. Thats a long trip for me and if I do the same style of driving for 60 minutes, i might get 42mpg if lucky. On a trip of 30 minutes, I may get 37mpg. 15 minutes its c32mpg. Town work and stop/start its 30 if lucky. Diesels seem to be designed for long trips and they then come into their own.

[Mottok]

Originally Posted by Jeff123

I don't think that it will plummet that much. Eco Pro is crap, I never use it.

These cars just take forever to warm up, even in summer. Thats the key. On a 240 mile trip in summer, driving as hard as conditions allow, I got 47mpg. Thats a long trip for me and if I do the same style of driving for 60 minutes, i might get 42mpg if lucky. On a trip of 30 minutes, I may get 37mpg. 15 minutes its c32mpg. Town work and stop/start its 30 if lucky. Diesels seem to be designed for long trips and they then come into their own.

Yeh I guess you're right about the long/short journey thing, God maybe I should've just gone for the 340i, feck. ha.

[Torque of the Devil]

I get my 440i up to about 37-38mpg most days on my 22 mile commute on an A road

[m4xpr4n4v]

Mine is a 2015 335i xdrive & has never gone past 25mpg!

[AlphaBravo]

37mpg trip computer showed yesterday on a 300 mile round trip, mostly motorway, driving like an old woman.

30 lifetime average I would say is a good result given the power/speed.

[goodbyalfa]

Which is why the 330d is the best comprise of the lot. Plenty quick enough if you want it to be, yet I average 42-44mpg long term without trying. If I drive like a nanny, I can get the best part of 50mpg, but what's the fooking point in owning a 40k car and driving like that.

[MickyD'bo]

Im at 41mpg average at the moment. That's over 16,000 miles. Not bad me thinks.

[J60nyn]

15000 miles I've averaged 32mpg in my 335d ! with a bit of man maths I think I will change it this year for a 440i it will only cost me a couple of hundred quid if that extra in fuel a year. even if I only get low 20's. My commute is only 13 miles each way

[Mottok]

Originally Posted by goodbyalfa

Which is why the 330d is the best comprise of the lot. Plenty quick enough if you want it to be, yet I average 42-44mpg long term without trying. If I drive like a nanny, I can get the best part of 50mpg, but what's the fooking point in owning a 40k car and driving like that.

I agonised between the 330d vs the 335d for quite some time also because of the extra economy but ended up going for the 335d because I wanted xdrive and by the time you spec in xdrive on a 330d there wasn’t a whole lot of difference in the price, not enough to stop me going for the 335d anyway. I guess I can get good fuel economy from the 335dx if I need to. It’s actually doing better than my last car which was an old 2006 e90 320d which was averaging 37mpg and costs well less to tax too so I shouldn’t complain..

[XAlp]

36-7 mpg according to trip computer

[Damien1984]

335d average is 42mpg I can get this up to 50mpg if I’m very careful but that defeats the object of having a 335d