The BMW 7 Series is a series of full-size luxury vehicles produced by the German automaker BMW since 1977. The 7 Series is BMW's flagship car, and it is the successor to the E3 6 Series of sedans and coupes. It is the largest and most expensive model in BMW's lineup, and it competes with the Mercedes-Benz S-Class, Audi A8, Lexus LS, Cadillac CT6, and Jaguar XJ. The 7 Series is offered in sedan, coupe, convertible, and hybrid models, and it is powered by a variety of 6- and 8-cylinder gasoline engines.