Discussion
m5touringv10 said:
Wills2 and p1tse, won't be easy to make calculations as I don't drive that much and too lazy to work it out!
Well that might be the issue, short journeys, cold engine + heavy right foot? Take it out for a steady run brim the engine do 100 odd miles then brim it again, worth it to put your mind at rest?
Just to update:
The setting is on miles per gallon, I've checked through the idrive menu.
I've reset the calculator it's still showing a similar read out in the mid 12s.
When I drive it in town the read out falls to mid 11s, when I combine with b road driving it goes up to mid to high 12s.
These results have been achieved on p400 mode and the car hasn't been revved over 4500 rpm and is driven in automatic.
The setting is on miles per gallon, I've checked through the idrive menu.
I've reset the calculator it's still showing a similar read out in the mid 12s.
When I drive it in town the read out falls to mid 11s, when I combine with b road driving it goes up to mid to high 12s.
These results have been achieved on p400 mode and the car hasn't been revved over 4500 rpm and is driven in automatic.
m5touringv10 said:
Just to update:
The setting is on miles per gallon, I've checked through the idrive menu.
I've reset the calculator it's still showing a similar read out in the mid 12s.
When I drive it in town the read out falls to mid 11s, when I combine with b road driving it goes up to mid to high 12s.
These results have been achieved on p400 mode and the car hasn't been revved over 4500 rpm and is driven in automatic.
There is the problem. Car is driven in automatic. P400 or P500 wont make a difference. The setting is on miles per gallon, I've checked through the idrive menu.
I've reset the calculator it's still showing a similar read out in the mid 12s.
When I drive it in town the read out falls to mid 11s, when I combine with b road driving it goes up to mid to high 12s.
These results have been achieved on p400 mode and the car hasn't been revved over 4500 rpm and is driven in automatic.
While driving on a long stretch of road say at 40-50mph where you know you wont stop or brake press the BC button. It should read at least 18mpg immediately.
I think your location has alot to do with it too. Town driving will not see it move out of low teens. A roads will see 20mpg. Motor way driving will see 15mpg.
Automode is cr*p too. Press power...manual and S5 and change up at 2000rpm.
Mine is a lot more fuel efficient on the motorway commute. I previously struggled to get more than about 180 miles out of a tank with mixed A and B road driving. My last tank was steady motorways and returned over 240 miles. But, if you're going to drive in P400 Auto or change at 2k rpm then an M5 makes no sense?
anotherdom said:
Mine is a lot more fuel efficient on the motorway commute. I previously struggled to get more than about 180 miles out of a tank with mixed A and B road driving. My last tank was steady motorways and returned over 240 miles. But, if you're going to drive in P400 Auto or change at 2k rpm then an M5 makes no sense?
Changing up at 2000rpm is probably the most effecient way to get decent mpg. Auto is a no-no. I've driven mine in auto mode twice in 7 months, both times accidently and for no more than 5 seconds each time. It really is awful. On a hoon I change up at 8000rpm and it is delightful but not so good for the mpg. Then again, I bought it so it put a smile on my face on the weekends.
Schermerhorn said:
m5touringv10 said:
Just to update:
The setting is on miles per gallon, I've checked through the idrive menu.
I've reset the calculator it's still showing a similar read out in the mid 12s.
When I drive it in town the read out falls to mid 11s, when I combine with b road driving it goes up to mid to high 12s.
These results have been achieved on p400 mode and the car hasn't been revved over 4500 rpm and is driven in automatic.
There is the problem. Car is driven in automatic. P400 or P500 wont make a difference. The setting is on miles per gallon, I've checked through the idrive menu.
I've reset the calculator it's still showing a similar read out in the mid 12s.
When I drive it in town the read out falls to mid 11s, when I combine with b road driving it goes up to mid to high 12s.
These results have been achieved on p400 mode and the car hasn't been revved over 4500 rpm and is driven in automatic.
While driving on a long stretch of road say at 40-50mph where you know you wont stop or brake press the BC button. It should read at least 18mpg immediately.
I think your location has alot to do with it too. Town driving will not see it move out of low teens. A roads will see 20mpg. Motor way driving will see 15mpg.
Automode is cr*p too. Press power...manual and S5 and change up at 2000rpm.
when I press BC whilst driving 40 mph on B roads it gives me a reading in the mid 12s.
Shaoxter said:
m5touringv10 said:
These results have been achieved on p400 mode and the car hasn't been revved over 4500 rpm and is driven in automatic.
Forget about your mpg problem, you're driving the car all wrong 
Shaoxter said:
My best was 28mpg cruising at a steady 60mph on an empty motorway.
Worst was a calculated 5.5mpg (computer doesn't go below 7mpg) on the Nurburgring - used 10 litres of fuel a lap!
Damn! I got 6mpg on my own 'private' track on the A629 between Hudderfield and Sheffield at 5am not too long ago.Worst was a calculated 5.5mpg (computer doesn't go below 7mpg) on the Nurburgring - used 10 litres of fuel a lap!
Must try harder
This sounds like something is wrong with the car to me, 12mpg is what? 170 ish miles range, which is terrible if you're not giving it the beans.
What's the service history like, has it had plugs etc?
I average 14 ish, I get 22 on my work run then the school runs and pottering about ruin it.
What's the service history like, has it had plugs etc?
I average 14 ish, I get 22 on my work run then the school runs and pottering about ruin it.
Edited by MuZiZZle on Sunday 10th August 13:50
m5touringv10 said:
Sorry for the delayed update, Schermerhorn you was right.
In manual mode shifting early has made a significant difference and having done a few longer trips
the mpg reading is now over 18.
it is boring but at least you know your car ain't broke.In manual mode shifting early has made a significant difference and having done a few longer trips
the mpg reading is now over 18.
Edited by m5touringv10 on Sunday 10th August 23:06
Now.....press the M Button.....and go have some fun!
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