 Since purchasing my E350 in June 2009, the engine has failed twice. The interior rattles causing annoyance. The car has been back into the garage for noises coming from rear and still has not been resolved by the garage. To be honest with you I am totally fed up with this car as it has caused me so much inconvenience in time and money. Furthermore this car is totally useless in snow conditions because it is rear wheel drive. I strongly recommend consumers not to buy this model. If the garage i bought this vehicle from does not do anything soon then i will be taking further action against mercedes. They certainly do not live up to their name.