30.6mpg!

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Discussion

Iamnotkloot

Original Poster:

1,427 posts

147 months

Saturday 23rd July 2016
quotequote all
Boring topic I know...but thought I had to share after reading a buying guide in EVO re the V10 M6. They said expect 15mpg normally with 20 on a run.

I've recently been to N Wales for the weekend and took the (E39) M5; 4 up with luggage for the weekend. 80 leptons cruise on the motorway and some relatively spirited driving round some Welsh A roads gave me 30.6mpg. I was chuffed with this figure as mooching round Manchester usually gives me 15mpg, similar to the M6.

The car is standard except for a muffler delete, is the M6 really 10 mpg worse on a run than the M5? I know it's more powerful and has 2 more cylinders but it still surprised me as BMW engines are usually pretty efficient.

Anyone got real life evidence to agree/disagree with EVO on this and what's the best you've had out of your M5?

rb5er

11,657 posts

172 months

Saturday 23rd July 2016
quotequote all
Cool starry bra etc....

Depthhoar

675 posts

128 months

Saturday 23rd July 2016
quotequote all
That's pretty good.

Recent trip to Italy via Germany in my E39 M5:-

Fast Autobahn work, fully loaded with people & holiday goods and chattels, including periods of 120mph+ cruising where possible = 19mpg. (Thought that was pretty amazing in the circs). Mainly fuelled by German 103 octane petrol.

General driving in Italy with/without passengers = 26.7mpg. (Resorted to 95 octane on occasions.)

75/80mph cruising on Autostrada and Autobahns on the return leg, again fully loaded = 29.7mpg. (98 and 103 octane fuels). Stunned by how little it drank on the way home.


XMT

3,797 posts

147 months

Saturday 23rd July 2016
quotequote all
your right it is boring....

Helicopter123

8,831 posts

156 months

Sunday 24th July 2016
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Yes, they are, but that's the downsides of having one of the best ever engines ever made at your disposal.

V10 engined BMWs are very special, expensive to run and maintain relative to other M cars but still cheaper than supercar alternatives.

Thought the EVO article put a positive spin on the M6, wich bodes well for prices. Get one sub 60k miles and warranty it.

cosworth330

1,300 posts

237 months

Sunday 24th July 2016
quotequote all
Never got more than about 27mpg out of my E39 M5 on a long run. My E60 M5 is around 21-23 max on a long run. Prefer the E60 on a long run as it's quieter and rides better..

Iamnotkloot

Original Poster:

1,427 posts

147 months

Monday 25th July 2016
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OK thanks for the replies guys - I promise I won't mention mpg on the M5 again!

RS250_Steve

149 posts

102 months

Monday 25th July 2016
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the best ive seen on my E60 M5 is 23-24mpg.
It does sound like they are significantly worse then.

MarcelM6

539 posts

106 months

Monday 25th July 2016
quotequote all
Not an M5 but my M6 average mpg on the onboard computer ays 17.9mpg over the last year. I do 90% motorway miles, don't hang around but also don't go crazy. I thought EVO's 15mpg guide was pretty accurate for an average user, ie fewer motorway miles than me.

I don't mind the mpg so much, the ridiculously small tank drives me nuts though - fill up 3/4 times a week!