The BMW 733i was a model of car manufactured by BMW in the 1980s. The McFly family owned a 733i in 1985. The car was owned by George McFly and was the main family car.

Before Marty McFly went back to 1955, Biff Tannen had borrowed and crashed another car owned by George, a Chevrolet Nova – thus ruining Marty's plans with Jennifer Parker to go up to the lake for the weekend. After Marty returned and improved the present, the car changed to a BMW, in one piece, and Biff was waxing it.

Appearances

• Back to the Future
• Back to the Future Part II