Quote:
Originally Posted by McHibbins
Thx sergei. Read that in the manual, but sounds a bit strange for me that u are need more fuel sailing with 3 knots than with 9( in an S-Class ie).
But ok..... got that info now  |
This is true for gasoline engines; your car will have increasing mileage up to a certain speed (usually between 45 and 55 mph) and then falling mileage to top speed. I would suspect that a diesel engine would do this also.