If your thinking of buying a Mercedes this may interest you. You fill it up when the fuel light comes on - about £42.00 on this occasion. Note zero on trip meter. Then you drive it around for over 450 miles until the fuel light comes on again. During this time there were usually 4 persons onboard, aircon working hard, and a variety of road types. Not too bad me thinks. What are you getting? Oh, and I do know this is not the most powerful Mercedes ever, but it suits me, and it's still a Mercedes.