In 09.07 I stored my '06 E320 CDI for winter and bought a '93 E300 2.8 w/135K miles. To date I've driven 6K miles -- the car starts right up even when parked outside in temps at -20F, gets 26-plus MPG in hiway driving, and provides competent performance and handling despite being 15 years old. Chief gripe: The 4-spd. tranny is woefully matched with the engine's ample torque (& needs a 5th gear). Preventative Maint. Recommended: To avoid costly repairs, timely peform all service as recommended by MB without exception!
The simple operation of M-Bs cruise control remaining constant over time; having dual airbags, ABS, and traction control as standard features in 1993!
A 5th gear (for the tranny); stronger power window regulators; better location for the power mirror controller (than by the shifter).