Safety: I have crashed one C-Class. Not a very nice experience in general, but the car is safe.
Reliability: In new Mercs there is too much electronics. IMHO. More electronics means more comfort. But more electronics means also more bugs. Always. If you want to have a truly trouble-free car, take a W124, which has reasonable comfort with minimal number of computers. But despite of what I have said before, W203 CDI is a very reliable car. Especially compared to its competition.
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