these replies are so brutally on the money,i just finished reworking a 1989 520-I and i swear my 67 volkswagon bug would beat it from 0 to 40 mph.i love the car but it is so f*c*ing gutless its allmost comical.the automatic trannys do all kinds of shifting and converter lock/unlock with absolutely no effect on the speedometer.my wife has a 2002 E-320 benz which is an absolute rocket for its size.ill drive the 525-I til i can get a good deal on a big engine BMW and then ill figuer out what the ultimate driving thing is all about. bones