Well, I own both cars, a 4speed manual 240D with 267000 and a 5 speed manual 190D with 144000 on the clock. The 190D is much quicker compared to the 240D. I'm sure the 240D is a little tired and the valves probably need to be adjusted again. However, the weight difference is significant and must be the deciding factor. Both cars have nearly the same horsepower. I like them both, for different reasons. I still want a 190D 2.5 turbo, or 1999 C43 AMG!

Kevin
1979 240D manual
1984 190D manual