The vehicle will intermittently go into limp mode with a max speed of 45mph. At a stop vehicle will not accelerate FWD unless transmission is put into park and the vehicle turned off and then re-started. Professional diagnosis suggests the transmission needs to be replaced and this is common for cars with 100k miles or more. Only a Mercedes Authorized Technician with a real time connection to a Mercedes Server can properly perform this task. This is a sub par design that creates a safety hazard. The repair procedure coupled with the frequency of this serious failure makes this vehicle a Lemon. Mercedes Benz Is Totally Responsible.

- Southaven, MS, USA

Rear differential noise diagnosed as failing pinion gear. This car has been driven carefully. The milage is 63,000. Rear differential problems appear in various forums and may occur more commonly than is currently known by the NHTSA. Similar/same may also be occurring in Chrysler products. The rear differential will need a rebuild or replacement.

- Ridgewood, NJ, USA

The transmission in my car will intermittently shift into low gear while diving. The car suddenly looses power while at highway speed. The check engine light came on and now the transmission won't shift out of first gear. I'm told by the Mercedes-Benz dealer that the transmission must be replaced and I have to pay for it, $7000! this is a serious safety issue and I should not have to pay for their failure.

- Sacramento, CA, USA