I agree with the comments on the W202 chassis.
I've driven in several, and they feel as solid as a bank vault. Classic Mercedes ride quality.
My mom had a 1995 C220, and put 150,000 nearly trouble-free miles on it. The only repair she had to make was a faulty idle control valve, or something similar.
I have been a passenger in the newer C class - a C240 with the 6 speed manual - Larry Bible's car, in fact, and I am sorry to report that it no longer feels like a Mercedes.
Larry slammed the door shut, and it sounded tinny and hollow, and rattled. The ride quality is more similar to a Honda Civic or Infiniti G20 than a Mercedes.
My 10 year old 1993 "E320" is still rattle free after 148,000 miles.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".