Hit brakes and lost control of car, but no collision or injuries. Took it directly to Mechanic, who showed me rear subframe on driver's side rusted, corroded, broken (other side was clean). I was told this is a manufacturing defect, and was very expensive to repair, he did not want give estimate, said take it to Mercedes. Called dealer, left message, but have not been contacted yet by dealer or by MBUSA.

- Chantilly, VA, USA