Not quite. We have a C270 CDI saloon that is now 3 years old, and use it to tow an Eriba Trion (MTPLM 1200 kg).
The car is great, strongly recommended. Read the posting further down this section entitled "Mercedes 220CDI"
If you opt for the lowered Sports suspension or the AMG tuning bits, then you can not fit a tow-bar - I'm sure this applied to the coupe, saloon and estate.