One problem related to automatic transmission has been reported for the 2001 Mercedes Benz C320. The most recently reported issues are listed below.
Malfunctioning seat control modules drain battery in 2001 C320 Mercedes Benz. Not long after purchasing the car in January 2008 with 51,000+ miles, I paid $175 dollars for a new mbz battery, before asking dealership to disconnect seat control modules. I was not prepared to pay $1200 to replace modules. June 25, 2010, my 2001 C320 stopped during a trip to phoenix, az from California, due to fuel pump going out. My 79 year-old mother and I waited in 100+ degree weather for a tow, which took 3 hours to get to phoenix mbz dealership. Oakland service rep never suggested replacing, although the car was serviced during the suggested mileage for replacement. The phoenix dealership initially replaced original fuel filter, and never thought to check if original fuel pump needed replacing. On June 28, 2010, my car stopped again on the return trip to CA, and we were towed back to az, where fuel pump was replaced. The incident cost me almost $2,000. 00 more than I planned to spend, while attending my graduation ceremonies in arizona. Considering the expense to maintain a mercedes, as well as the cost of the car, you would think the service staff would be more proactive with customer service. I suggest mercedes create a better warning system for equipment failures like the seat control modules and fuel pump. I also suggest mercedes consider lowering their service prices, so the average "joanna" can pay the maintenance to keep a dependable car. The valve cover gaskets were leaking oil and transmission electrical connector was leaking. Updated ivoq 09/10/10.