Because Mercedes hold their value well and Audis don't both cars are roughly the same price. This was not an authorized dealer but a dealership that buys cars after their lease is up and tries to either sell them or lease them again. They have a short warranty period on all their cars with the option to purchase a factory warranty. I was very impressed with the type of cars they had. Bimwads, Porsches, Jags, 2 Ferraris, 2 vipers, and several lexuses. The dealer says they will replace anything wrong or worn out on all of the cars before they leave the lot. This Audi needed wiper blades and front brakes. The brakes felt fine to me but they say they are worn out. I'll write back when i drive Both cars this Saturday.