mpg for Z4 M 3.2

[Anakin]

I only ever use my when the suns out and the roof is down. But I get about 21mpg.

[beanie]

Mine is sat on 24.x and has been for a while. Mostly fun miles but with a bit of steady town driving to reach the nice roads.

Best I saw was 36mpg (indicated) after a long and steady trip from Italy to England. Seems improbable but it included a long, slow descent through the Alps behind a couple of trucks and that seemed to carry through over the course of the trip. This then spurred me on to see if I could maintain it I'd normally expect to see high 20's-early 30's on a normal, mostly legal-speed motorway run.

[Steve84N]

I was contemplating switching from my previous Z4 3.0Si Coupe to a Z4M but was a little worried about fuel consumption for a daily...then I ended up buying a C63 where anything over 20 is good!

[exdos]

13.4mpg around The Ring
but 30mpg on the 1000mile round trip there and back.

Your just not trying hard enough. Single figures are easily achieved, with just a little more effort.

If you're revving the car too much in each gear, then you're outside the optimum powerband.

I get 11.4mpg with my Z3 MC with the same S54 engine around The Ring. The Z4MC does better MPG because it has a 6-speed box whereas the Z3MC has a 5-speed.

[exdos]

[

On the ring, unless you're some kind of God/madman you will never drive the car as hard as on a smaller track you know well.
The average speed on the ring is also quite a lot higher I think compared to most tracks so must (beneficially) affect mpg also. (that may be total nonsense though, but it seems to make sense in my head, less braking and accelerating, bearing in mind the throttle is generally used WOT in both cases?).

You're sort of right. The Nordschleife (a.k.a. The Ring) is a road course rather than a typical short circuit racetrack so the fastest laps require a flowing driving style rather than aggression. Knowledge of the track layout and use of the cambers is essential. You don't want to make mistakes there otherwise it can be very costly indeed and plenty people do.

[BMWZ4MC]

I’ve never seen more than 25 mpg and that’s would be on a long motorway trip. I usually see high teens and regularly see 9mpg on a track day. I can’t remember getting under 9mpg, so I wonder if that’s as low as the OBD indicates.
By comparison, my RS4 usually returns a figure in the low to mid teens, stretching to low 20s on the motorway. On a spirited drive on country lanes it averages around 10mpg

[buzyg]

13.4mpg around The Ring
but 30mpg on the 1000mile round trip there and back.

Your just not trying hard enough. Single figures are easily achieved, with just a little more effort.

If you're revving the car too much in each gear, then you're outside the optimum powerband.

I get 11.4mpg with my Z3 MC with the same S54 engine around The Ring. The Z4MC does better MPG because it has a 6-speed box whereas the Z3MC has a 5-speed.

If your using 6th gear on any track, you really are bimbling around or an lot better than me at preserving your corner speed. At Spa, with some very long straights, I wasn't even getting out of fourth, when I was going for a lap. No idea what the mpg was to busy.

[exdos]

Your just not trying hard enough. Single figures are easily achieved, with just a little more effort.

If you're revving the car too much in each gear, then you're outside the optimum powerband.

I get 11.4mpg with my Z3 MC with the same S54 engine around The Ring. The Z4MC does better MPG because it has a 6-speed box whereas the Z3MC has a 5-speed.

If your using 6th gear on any track, you really are bimbling around or an lot better than me at preserving your corner speed. At Spa, with some very long straights, I wasn't even getting out of fourth, when I was going for a lap. No idea what the mpg was to busy.

Re-read what I wrote. I said that the Z4MC has a 6-speed box whereas the Z3MC has a 5-speed box, I made no mention of which gear I use at any point on track. Yes, I am quite good at preserving speed around corners.

[buzyg]

If you're revving the car too much in each gear, then you're outside the optimum powerband.

I get 11.4mpg with my Z3 MC with the same S54 engine around The Ring. The Z4MC does better MPG because it has a 6-speed box whereas the Z3MC has a 5-speed.

If your using 6th gear on any track, you really are bimbling around or an lot better than me at preserving your corner speed. At Spa, with some very long straights, I wasn't even getting out of fourth, when I was going for a lap. No idea what the mpg was to busy.

Re-read what I wrote. I said that the Z4MC has a 6-speed box whereas the Z3MC has a 5-speed box, I made no mention of which gear I use at any point on track. Yes, I am quite good at preserving speed around corners.

So tetchy.

[exdos]

Not tetchy at all; just pointing out that you misread what I wrote and consequently reached an incorrect conclusion...

[MrPT]

I know tyre pressure makes a difference to rolling resistance but was surprised recently by how much. Tried 34psi all round instead of the usual 31/32 and easily returned nearly 30mpg for half a tank with a mixture of motorway and A road driving. Ride was totally ruined though, to the extent that my wife and I both got sore backs for the first time ever! Back to 31psi and the ride is fine but I’m back on track for the usual 26-27mpg average.

[Steve84N]

Try changing pressures on a push bike and you'll quickly feel how much difference there is in the power needed to move.

[buzyg]

Not tetchy at all; just pointing out that you misread what I wrote and consequently reached an incorrect conclusion...

Still tetchy.

[Anakin]

20.5 but I only drive it with the roof down

[BeeEmm]

Shouldn't you guys be like this when you average 17 MPG and like this when you achieve more?