Verified answer

GM owns and makes Chevrolet, GMC, Hummer, Cadillac, Buick, Oldmosbile, Pontiac, Saturn

GM bought Saab, Opel, Holden and Vauxhall.

Ford owns and makes Mercury and Lincoln.

Ford bought Land Rover, Volvo, Jaguar, and some percent of Mazda. They also bought Aston Martin a few years back and then sold Aston Martin to a car parts company earlier this year.

Just to let you know about other companies...

Toyota owns and makes Lexus and Scion. Toyota owns some percent of Subaru.

Honda owns and makes Acura.

Nissan owns and makes Infiniti and Renault.

Volkwagon owns and makes Audi's, Skoda's, and Seat's.

Volkswagon bought Lamborghini, Bently, and Bugatti. Porsche is currently buying VW. Porsche already owns at least 41% of VW.

Fiat owns and makes Alfa Romeo and they bought Ferrari and Maserati.

Daimler Chrysler owns and makes Chryslers, Dodge, Mercedes-Benz, Smart, and Plymouth.

BMW owns and makes Mini and RollsRoyce.

GM: Caddy, Buick, Pontiac, Chevy, Subaru, Saab, Hummer, Saturn

Ford: Mazda, Mercury, Lincoln, Volvo, Jaguar, LandRover

I may be forgetting some of both.

Below is a link to who owns who. I really don't want to type them all. Hope it answers your ?