Would it cost more to park a beemer? Could be insurance...
Insurance and maintenance/repairs, as well as the lifestyle implications -- who is the driver trying to impress? When you take a woman out in a beemer, you feel more obligated to that premium gasoline and carwash, that dinner in a tablecloth restaurant rather than at a diner, and that expensive bottle of wine. Driving a Honda or Toyota makes the driver feel more settled down and thrifty.