C63_2_4S said:
I know I will probably get burnt with comments about "oh you bought a turbo why are you worrying about the MPG" ......... I am (with reseting the trip on the PCM) getting roughly 12.0 MPG around town (central London) on short journeys. Sometimes even less.
I have a Tiptronic S
Is this normal? This is not even reaching mid way on the boost gauge on a sprint?
No one should flame you for any queries about fuel consumption if you feel that something is wrong although I'd personally query why you bought a 473 bhp car for so much town usage.
I can't say whether 12 mpg is extraordinarily low for such use but it does seem so given that when I first got my car I spent the first few weeks hooning it as much as possible and never got below 17.
Since then in 15k miles my car has averaged 22.33 mpg and the only time it went below 20 was in the forests of Germany.
Mine is also a Tiptronic S - driven 50/50 in 'M' and 'D' - and has done a lot of motorway/autobahn cruising but even if I used it more on UK B roads I'd be disappointed with less than 20 mpg overall as that is what my 996T achieved over 11k miles.
Most importantly, if your car is only boosting to half the gauge when being driven hard there is definitely something wrong. If you get that sorted out I think you'll be impressed with both the performance improvement and the mpg.
Good Luck.