I bought my 2002 C240 in 2010 with 128,000 KM and recently sold it with 260,000. The car was pretty exceptional, to be honest. It looks great, handles great (I'm more about the cornering than straight line speed), and is decently quick.

Slows down after 220,000 KM's.

WATCH THE RUST!!! It's REALLY BAD! RUST CHECK EVERY YEAR!

Can't stress this enough. I didn't rust check/proof it and within 3 years it looked so bad, now it's just a rust bucket. I should have rust checked but apparently this year/model had something to do with Mercedes buying steel from China. Or so I was told.

Other than that, I did a tune up at 200,000 which helped, regular oil changes and maintenance, breaks at about 245,000, and changed a few control arms/stabiliser links - primarily because I beat it up through corners all the time :) Couldn't help it!!

If you find one in good condition and treat her right, great car!