While driving experienced sudden loss of power. Engine would rev normally but vehicle acted as if in neutral. I was able to move over to side of freeway safely. Placed car in park and then shifted back into drive, and car behaved normally. After doing research, I have discovered that this is a common problem with this model. According to, jayauto.wordpress.com, Mercedes is in a fight with its own suppliers because they produce a low-quality part. If you have problems with your 7-speed transmissions, please report it to: NHTSA. Only this organization can enforce Mercedes to do a transmission recall. In 2011, Mercedes made their biggest profit in their history. However, I don't think they will use it to fix their issues with transmission.

- Riverside , CA, USA