This is my 3rd BMW. I went from a 335i to a 535i. I now have a 550i. This is the only car that I've ever had that scares me when I get on the gas hard. I've had the 550 for 3 years going on 4 and really haven't had any major problems. The gas mileage is really good for a car with this much power. My only complaint is the lack of tech gadgets and features found in cheaper cars.