I should have chosen to untick the brakes option when I specified my Mercedes E320 cdi 18 years ago because, by not using the brakes, I can get 40mpg out of it.
I expect my driving habits will change when that car is replaced by a gti7.5 pp in a few weeks, but I'd be interested to know what long term, and max and min over short term, fuel consumption the connoisseurs of this board get. Please.