Date registered: Dec 2005
Vehicle: W211 E320 Bluetec R129 SL500 - $1300 car ........ Ford F350 6l
Location: CA Bay Area
Mentioned: 9 Post(s)
Quoted: 1070 Post(s)
Both are good cars coming from different eras. W124 is going to be way older.
When W124 is last MB car with mechanical controls, where engine management is controlled by vacuum logic system, W210 is digitally controlled.
Even early electronics are not too reliable -I found troubleshooting electronics way easier than dealing with leaky vacuum maze, while newer model is way more comfortable than the older one.
Personal preference for sure.