F30 335D Remap...

[smashy]

JNW1 said:

Bit like a BMW 6-pot diesel then....

I think you should change that to Bit like a 6 pot twin turbo diesel xdrive then.....

People get Diesels for MPG which is why id never get one of those,I think my 3ltr is amazing.

I was once in a 15 mile Motorway average speed camera area 50mph I hit the OBC and at the end 71mpg.yep 71

pootling in 60/ 65mph heavy moving motorway traffic 60mpg is not too hard to achieve in eco pro. Amazing for the power

Edited by smashy on Wednesday 19th August 21:35

[Welshbeef]

smashy said:

I think you should change that to Bit like a 6 pot twin turbo diesel xdrive then.....

People get Diesels for MPG which is why id never get one of those,I think my 3ltr is amazing.

I was once in a 15 mile Motorway average speed camera area 50mph I hit the OBC and at the end 71mpg.yep 71

pootling in 60/ 65mph heavy moving motorway traffic 60mpg is not too hard to achieve in eco pro. Amazing for the power

Edited by smashy on Wednesday 19th August 21:35

Impressive indeed - the 30d is notably more economical over the 35d unit possibly the sweetest spot in the range.

[drmark]

Welshbeef said:

Yea man maths again and rose tinted glasses .....

I have read that it has 4 cylinder deactivation IE if in "Eco" mode it runs on only 4 cylinders as such would be like a 2.75ltr 4 cylinder jobbie - I believe Corvettes do this as well to make significant increases to mpg ideal for M way or urban driving then let the beast out under full load driving .... Though full load is probably a very short activity in the UK with its low speed limits.

New RS6 has this too and I still only averaged 20 over a day with lots of gentle driving. Still mpg the last thing you consider in one of these...

[smashy]

Welshbeef, that engine MPG wise is basically the same MPGs in all circumstances as my 120d auto Efficient Dynamics which I had from 6 months old in 2008.In fact a while ago did 700 miles around cornwall ,my 120d allways ended up on 44mpg for that journey which ive done a few times ,this time in that 3ltr 48mpg

EDITED sorry not 48 was 46mpg

Edited by smashy on Wednesday 19th August 22:03

[moffat]

JNW1 said:

drmark said:

Agree it is a great car but don't fall for the official mpg figures - they are MUCH thirstier than that

Bit like a BMW 6-pot diesel then....

I can confirm the AMG V8 is indeed thirsty coming from a C63 where I averaged 18.1mpg over 25k miles (the E63 is around 10-15% better).

However, my current 640d (chipped) is averaging 39.2mpg after 9k miles and easily gets 51mpg on my occasional commute from Nottingham to Maidenhead (150 miles) at 75ish, helped by the 50mph average speed zones.

The best I ever got from my C63 was 27mpg and it was THE most tedious journey ever - 70mph cruise control from Nottingham to Heathrow. I only did it so I could get to Heathrow and back on one tank, couldn't be bothered on the way back so filled up at Heathrow and nailed it all the way home

[JNW1]

moffat said:

JNW1 said:

drmark said:

Agree it is a great car but don't fall for the official mpg figures - they are MUCH thirstier than that

Bit like a BMW 6-pot diesel then....

I can confirm the AMG V8 is indeed thirsty coming from a C63 where I averaged 18.1mpg over 25k miles (the E63 is around 10-15% better).

However, my current 640d (chipped) is averaging 39.2mpg after 9k miles and easily gets 51mpg on my occasional commute from Nottingham to Maidenhead (150 miles) at 75ish, helped by the 50mph average speed zones.

The best I ever got from my C63 was 27mpg and it was THE most tedious journey ever - 70mph cruise control from Nottingham to Heathrow. I only did it so I could get to Heathrow and back on one tank, couldn't be bothered on the way back so filled up at Heathrow and nailed it all the way home

I wasn't suggesting the absolute mpg figures were similar, only that it appears both miss their claimed figures by a similar margin. I believe the old shape C63 had a combined figure of 23.5mpg in which case your average of 18.1 represents a shortfall of 23%; the 640d has a combined figure of 51.4mpg so your current average of 39.2 represents a shortfall of - well 24% actually! However, interesting that when keeping to 70mph the C63 easily bettered its combined figure whereas averaging a similar speed the 640d only just about manages to hit its respective number.....

[Welshbeef]

JNW1 said:

I wasn't suggesting the absolute mpg figures were similar, only that it appears both miss their claimed figures by a similar margin. I believe the old shape C63 had a combined figure of 23.5mpg in which case your average of 18.1 represents a shortfall of 23%; the 640d has a combined figure of 51.4mpg so your current average of 39.2 represents a shortfall of - well 24% actually! However, interesting that when keeping to 70mph the C63 easily bettered its combined figure whereas averaging a similar speed the 640d only just about manages to hit its respective number.....

It's down to the fact derv units take longer to get to temp over petrol so suck more - hence short trips the petrol wins. If you reset the derv once up to temp on a 70mph adaptive cruise control in a 640d/535d you will see 60mpg.

[JNW1]

Welshbeef said:

It's down to the fact derv units take longer to get to temp over petrol so suck more - hence short trips the petrol wins. If you reset the derv once up to temp on a 70mph adaptive cruise control in a 640d/535d you will see 60mpg.

I don't disagree that diesels take longer to warm-up than petrols but what leads you to believe that Moffat's mileage includes lots of short runs? You may be right but I can't see anything in his post to suggest that's the case and I wouldn't call Nottingham to either Heathrow or Maidenhead a short trip!

[Welshbeef]

JNW1 said:

I don't disagree that diesels take longer to warm-up than petrols but what leads you to believe that Moffat's mileage includes lots of short runs? You may be right but I can't see anything in his post to suggest that's the case and I wouldn't call Nottingham to either Heathrow or Maidenhead a short trip!

True I was simply generalising - he could be gentle on acceleration and look ahead so used the brakes little or the total opposite plus heave traffic.

I do totally agree that diesels love steady state that's where they give massive mpg - where petrol take my RS6 that would be 18mpg nearly every single tank even to the decimal... I once get 26/28mpg out of it that was super cautious driving as I had the kids in the car asleep and would need fuel if I drove normally so nursed it while they were asleep. Was it fun nope very relaxing but I'd not be doing that all the time/only that once in my ownership.

I do miss my RS6 .

[smashy]

Who actually cars about manuf. MOGs ? its real world we need to think about which is why these forums are great.

[Welshbeef]

smashy said:

Who actually cars about manuf. MOGs ? its real world we need to think about which is why these forums are great.

It's hugely down to the individual. So say you and I have the exact same car but our mpg will be totally different unless you drive the same roads at the same times and in the same vigour or not as I.

For info I seem to be getting pretty much official mpg from every car I've owned - that's brim to brimethod, take that as you will some will vastly beat it others will not even get the urban value as combined. So it's key to understand what the drive is in what traffic conditions and how hard on the throttle and how many people you generally Carly (the last one I find fully Lauren as in 4 passengers and a boot of luggage hits mpg up to maybe 8-10%

[smashy]

yep agreed mind only through Forums can we realise that there is a significant difference between a 335d and 330d so I would never get one.

[Welshbeef]

smashy said:

yep agreed mind only through Forums can we realise that there is a significant difference between a 335d and 330d so I would never get one.

Oh the 330d is much more economical over the 335d - that's certainly the case RWD v x drive if it's the same xdrive for both in not sure that the big economy you can get with the 330d over the 335d is maintained? Would be interesting as clearly x drive sucks mpg down & removes some fun even if it's not LSD as fankly on the public road you don't NEED LSD as smoking inside read and drifting isn't that common or recommended.

[JNW1]

smashy said:

yep agreed mind only through Forums can we realise that there is a significant difference between a 335d and 330d so I would never get one.

How do you work that out then? From what I've seen a 330d X-Drive isn't that much better on fuel than the equivalent 335d; two or three mpg better certainly but that's not a difference I'd describe as significant. Obviously there will be a difference between (say) your F30 330d RWD saloon and my F31 335d but it would be wrong to assume that's all down to engine efficiency as, even leaving aside driving style and road conditions, it's not comparing apples and apples. BMW's official figures don't suggest a significant difference between like for like models of the 330d and 335d so why do you think there would be in real world driving?

[smashy]

Only from what Ive heard. If im wrong Im wrong not the end of the world.

Driving like i stole it at night on long motorway runs I cant get mine under 39,which is where most of my driving is .The other day M25 A12 to Basildon showed 61mpg ( middle lane stuff no traffic) what would your 335d get do you reckon?

West london worthing and back was 51mpg all in all seems about more economical than my 120d.
Surprised to read on this thread a mapped 640d showed 51 mpg on A Long journey which is great.

[JNW1]

smashy said:

Only from what Ive heard. If im wrong Im wrong not the end of the world.

Driving like i stole it at night on long motorway runs I cant get mine under 39,which is where most of my driving is .The other day M25 A12 to Basildon showed 61mpg ( middle lane stuff no traffic) what would your 335d get do you reckon?

West london worthing and back was 51mpg all in all seems about more economical than my 120d.
Surprised to read on this thread a mapped 640d showed 51 mpg on A Long journey which is great.

Not suggesting an F31 335d is as economical as a RWD F30 330d, clearly it isn't; the only point I was making is that when you compare like for like models the mpg advantage the 30d holds over the 35d isn't that significant. I was therefore surprised when you implied you wouldn't buy a 35d because the economy is so much worse because when you compare apples and apples that's not the case!

[abarber]

JNW1 said:

Not suggesting an F31 335d is as economical as a RWD F30 330d, clearly it isn't; the only point I was making is that when you compare like for like models the mpg advantage the 30d holds over the 35d isn't that significant. I was therefore surprised when you implied you wouldn't buy a 35d because the economy is so much worse because when you compare apples and apples that's not the case!

The mpg submissions on Honestjohn have the 2wd F30 330d at 5mpg better, 45mpg vs 40mpg from F30 335d submissions. Fuelly have the 2wd 330d at 42mpg vs 37mpg for the 335d.

It's so frickin hard to get decent figures these days, has anyone tried both on similar routes?

[moffat]

JNW1 said:

I don't disagree that diesels take longer to warm-up than petrols but what leads you to believe that Moffat's mileage includes lots of short runs? You may be right but I can't see anything in his post to suggest that's the case and I wouldn't call Nottingham to either Heathrow or Maidenhead a short trip!

My driving is made up of a stack of small runs (<5 miles) and the odd weekly long drive. That's the real reason my average is 39.2mpg. As WB said, the diesel takes longer to warm up and I generally get 30mpg for a short trip.

The 640d will exceed it's combined figure at 70mph cruise - 53-54mpg is achievable.

Also add in that my 640d is chipped and has been since 500 miles which also lowers the overall stats and my C63 was a stock (457hp car).

I don't like diesel and will likely be moving to the new C63 in a year or two but for now with some longer journeys the 640d is pretty epic for a near 2000kg car, chipped to 370-380bhp and returning 51mpg on the motorway at 75 and an overall 39.2mpg.

[moffat]

smashy said:

Surprised to read on this thread a mapped 640d showed 51 mpg on A Long journey which is great.

I'm driving back from Maidenhead to Nottingham today so will try and remember to take a pic of the OBD at the end of the journey.

I won't be going for economy but I won't be going too fast either - likely a 75-85mph run and would expect to get 45mpg.

[Welshbeef]

JNW1 said:

How do you work that out then? From what I've seen a 330d X-Drive isn't that much better on fuel than the equivalent 335d; two or three mpg better certainly but that's not a difference I'd describe as significant. Obviously there will be a difference between (say) your F30 330d RWD saloon and my F31 335d but it would be wrong to assume that's all down to engine efficiency as, even leaving aside driving style and road conditions, it's not comparing apples and apples. BMW's official figures don't suggest a significant difference between like for like models of the 330d and 335d so why do you think there would be in real world driving?

That's the thing online people can google 330d v 335d mpg and see massive differences but fail to understand the 4wd issue or compare the 2wd v 4wd of 330d the. You can understand the 335d.


Heck end of day want more drive in EVO pro mode - that's Sport+ in my books.