I DON'T EXPECT TO GET 67!! but do expect more than 48. Motorway journeys are always less if doing 80 constantly but I wasn't, same driving conditions going as coming home.
This is supposed to be a more fuel economical engine, thats what the newer cars are about. the Mercedes sales rep said I would get more without any hesitation, he said the ones he's driven he's got at least 60mpg on motorways and was surprised I didnt.
Was in comfort mode, a/c yes but not high (same as driving old car) same passengers, but we ate lunch so I guess thats it!! No its not 4matic. Its had 4 new tyres fitted by Mercedes and service before I took the car.
I don't think it matters how many miles I do a year, but I do under 10k. It matters how much I fuel I use each time I go out, around the village or town I'm not expecting to get a proper mpg as journeys are much shorter.
I'll leave this now as some of you are helpful and some are just a bit mean and sarcastic, which I don't think is called for when I asked a genuine question and help for my new car.