I've owned 3 Mercedes; 1 BMW; 1 Audi and this is the best. I enjoy the performance and great features. I also enjoy the top quality without drawing as much attention as one does with the higher profile cars above.
Great Navigation system and a super radio. I also like the acceleration and steering.
Car needs better city mileage; slightly more back seat leg room and definitely more trunk room. I also find the transmission a little jerky at low speeds.