My 70s 280S went nowhere when I pushed the pedal at 55-60, and when I first got it, it stalled when I slowly went around a right turn. Mercedes had the car for three weeks to figure this one out, and I never heard a reason, even thought when I got it back, it did not do this again.

My second MB was a 1980 300D. Other than my mistake of buying a BMW (the head failed for no discernable reason in less than four years), I was all diesel until I retired.

As a Mercedes driver for about 25 years, I still believe that the 240D and 300D are the most dependable best mileage (considering weight) cars ever built.