New shape M6 or 640d as a daily driver?

[Andy M]

HoHoHo said:

I'd suggest there's no chance of 35mpg unless you simply sat there with the engine idling and not moving.

Surely that's the quickest way to achieve 0mpg?

[HoHoHo]

Andy M said:

HoHoHo said:

I'd suggest there's no chance of 35mpg unless you simply sat there with the engine idling and not moving.

Surely that's the quickest way to achieve 0mpg?

Ha, yes you're correct

[Patrick Bateman]

Why is it a decent chunk off its official figures? Turbocharging?

Any normally aspirated BMW I've had has easily achieved (and exceeded if you try) its combined mpg figure.

[pjv997]

Patrick Bateman said:

Why is it a decent chunk off its official figures? Turbocharging?

Any normally aspirated BMW I've had has easily achieved (and exceeded if you try) its combined mpg figure.

I read in a car mag many years ago that a good benchmark is 80% of combined figure to equate to real world consumption and I have found that to be not far off the mark.

However, my experience with my M5 is that I am at a long term average over 40,000 miles of just over 20 mpg, which makes it closer to 70% of combined figure.

35mpg is not realistic IMO, but on a long stead cruise on the motorway keeping pace with the fastest traffic does still deliver north of 25mpg (in my experience).

[Wills2]

I was 0.5 mpg off the combined number? So basically spot on.

[Shaoxter]

Patrick Bateman said:

Why is it a decent chunk off its official figures? Turbocharging?

Any normally aspirated BMW I've had has easily achieved (and exceeded if you try) its combined mpg figure.

If you think the F10 M5 official mpg figures are ambitious, wait til you try the i8

[HoHoHo]

pjv997 said:

Patrick Bateman said:

Why is it a decent chunk off its official figures? Turbocharging?

Any normally aspirated BMW I've had has easily achieved (and exceeded if you try) its combined mpg figure.

I read in a car mag many years ago that a good benchmark is 80% of combined figure to equate to real world consumption and I have found that to be not far off the mark.

However, my experience with my M5 is that I am at a long term average over 40,000 miles of just over 20 mpg, which makes it closer to 70% of combined figure.

35mpg is not realistic IMO, but on a long stead cruise on the motorway keeping pace with the fastest traffic does still deliver north of 25mpg (in my experience).

I think you're spot on there pjv

[CRA1G]

Shaoxter said:

If you think the F10 M5 official mpg figures are ambitious, wait til you try the i8

The i8 figures are controversial... But it all depends in which mode it's driven in,I'm sure the 130 mpg is achievable but driving mine as a "sports" car which is very quick I get around 60 mpg... Now that's not bad... I'm very impressed with the performance/mpg.

[JMBMWM5]

notax said:

Yes, good point. The alleged fuel economy of the M6 is still far better than I get from the C63, and better than the AMV8, XKR etc... so for me at least it could still be a relief! What sort of mpg do you get in the real world in an M6?

I have seen 27 MPG on my M6 GC CP, but it usually ends up 24/25 MPG overall.
PS) I never do 70MPH always higher and boot down when roads allow.

[Patrick Bateman]

pjv997 said:

I read in a car mag many years ago that a good benchmark is 80% of combined figure to equate to real world consumption and I have found that to be not far off the mark.

However, my experience with my M5 is that I am at a long term average over 40,000 miles of just over 20 mpg, which makes it closer to 70% of combined figure.

35mpg is not realistic IMO, but on a long stead cruise on the motorway keeping pace with the fastest traffic does still deliver north of 25mpg (in my experience).

My point is more that on a long steady cruise in my e39 I can comfortably average north of 25mpg without dawdling. The official figures for my car are noticeably worse than the F10 so shouldn't the F10 be able to average a noticeable chunk more?

[Schermerhorn]

How accurate is the MPG read out?

35mpg quoted might not be 35mpg in real life.

[cslwannabe]

I guess the test is a lot different now Patrick Bateman. My 2001 E46 could achieve its official combined mpg as can my 2007 Boxster however my Mk7 Golf R is currently managing 75-80% of its official figure which is much like all the turbo diseasals SWMBO has owned (except for the VAG 2.0 TDis which seem to achieve or better their figures).

M6 all the way I reckon, although I am a huge fan of the 640d. My only real complaint with having gone back to a petrol car for a daily driver is the poor range compared to diseasals

[Wills2]

I got 16mpg this afternoon, that's better.

[HoHoHo]

Wills2 said:

I got 16mpg this afternoon, that's better.

That's certainly on the way and a positive improvement, I've been getting about 14mpg recently

[Patrick Bateman]

cslwannabe said:

I guess the test is a lot different now Patrick Bateman. My 2001 E46 could achieve its official combined mpg as can my 2007 Boxster however my Mk7 Golf R is currently managing 75-80% of its official figure which is much like all the turbo diseasals SWMBO has owned (except for the VAG 2.0 TDis which seem to achieve or better their figures).

M6 all the way I reckon, although I am a huge fan of the 640d. My only real complaint with having gone back to a petrol car for a daily driver is the poor range compared to diseasals

I can't help but think turbocharging has something to do with it. Certainly any time there is a large difference between official figures and actual figures the car is invariably turbocharged.

[Hoggers]

I bought a 2014 640d M Sport Coupe in December after test driving it and being very impressed with the pace, styling and overall efficiency from the diesel. I put a tuning box on it which took it up to 360bhp which made it quicker still.

It's a good car ... but it always felt a bit dull for me as it wasn't engaging or exciting enough - despite its M Sport badge. I had a 320d M Sport that was far more exciting to drive despite the lack of pace by comparison.

Anyway, I felt I was missing out and swapped the 640d for a 2012 M6 a couple of weeks ago. I've now got something that is far more interesting and special.

Yes it will cost more to fuel and maintain.. and I've swapped into an older car to make the finances work ... but I love the M6 and I only liked the 640d.

Depends what you are looking for but I'd say if you are expecting a sporty drive from the 640d you may be disappointed.

[Hoggers]

By the way. My 640d was averaging 35mpg and I'm getting 20mpg on the M6. I'm using it as a daily driver.

[Welshbeef]

Hoggers said:

I bought a 2014 640d M Sport Coupe in December after test driving it and being very impressed with the pace, styling and overall efficiency from the diesel. I put a tuning box on it which took it up to 360bhp which made it quicker still.

It's a good car ... but it always felt a bit dull for me as it wasn't engaging or exciting enough - despite its M Sport badge. I had a 320d M Sport that was far more exciting to drive despite the lack of pace by comparison.

Anyway, I felt I was missing out and swapped the 640d for a 2012 M6 a couple of weeks ago. I've now got something that is far more interesting and special.

Yes it will cost more to fuel and maintain.. and I've swapped into an older car to make the finances work ... but I love the M6 and I only liked the 640d.

Depends what you are looking for but I'd say if you are expecting a sporty drive from the 640d you may be disappointed.

Is that the Hartage £1,700 tunit box or x?

[Hoggers]

I had the DTUK diesel tunng box one on the 640d. Very good it was too. No issues with the 640d and its straight line pace with or without the box. I'm selling the box if anyone wants it btw

[cerb4.5lee]

Hoggers said:

I had the DTUK diesel tunng box one on the 640d. Very good it was too. No issues with the 640d and its straight line pace with or without the box. I'm selling the box if anyone wants it btw

You have me tempted With the box!

Loved the honest earlier evaluation of the 640d aswell and i wish we didnt do so many miles in ours because the engine does spoil the overall package a little bit too much.

Have fun in the M6