I have just bought a e320 cabriolet - 1996 5 speed auto. The mileage I am getting is quite low - about 17 miles per gallon whereas my old e320 coupe did around 24 - I am not a heavy driver and I dont have city driving to do.
The car has been serviced by a MB mechanic - the old plugs came out the right color and the car runs real smooth hot and cold. The mechanic is a bit puzzled why the mileage is not better - any ideas to go on?