It's all about cars

BMW owns:-BMW-Mini-Rolls Royce
Daimler/Chrysler owns:-AMC (brand discontinued -- Chrysler bought AMC primarily for the Jeep brand which was owned by AMC)-Chrysler-Dodge-Eagle (brand discontinued)-Hyundai (Daimler/Chrysler only owns 10% --13 May 04 changes!)-Jeep-Maybach-Mercedes-Benz-Plymouth (brand discontinued)-Smart
Fiat owns:-Alfa Romeo-Ferrari-Fiat-Lancia-Maserati
Ford owns:-Aston Martin-Ford-Jaguar-Land Rover (bought from BMW)-Lincoln-Mazda (Ford owns 33% of Mazda)-Mercury-Volvo cars
Fuji Heavy Industries owns:-Subaru
General Motors owns:-Buick-Cadillac-Chevrolet-Daewoo (GM owns 44%)-Fiat (GM has decided to divorce itself from Fiat as of Feb '05, but will retain 10% ownership.)-GMC-Holden-Hummer-Oldsmobile (brand discontinued)-Opel-Pontiac-Saab-Saturn-Suzuki (2.5%, from 20%)-Vauxhall
Honda owns:-Acura-Honda
Hyundai owns:-Hyundai-Kia
Isuzu owns:-Isuzu(Mitsubishi Corp., Itochu Corp. and Mizuho Corporate Bank owns part of Isuzu.)
Mitsubishi Corp. owns:-Isuzu (13.6%)-Mitsubishi Motors Corp (13%)
Nissan owns:-Infiniti-Nissan-Renault (Nissan owns 15%)
PSA Peugeot Citroen owns:-Citroen-Peugeot
Porsche owns:-Porsche-VW (20%)
Renault owns:-Nissan (Renault owns 44%)
Toyota owns:-Daihatsu (~51%)-Fuji Heavy Industries -- Subaru (Toyota owns ~20%. Toyota bought this from GM in late 2005. )-Isuzu (5.9%, announced 7 Nov. 2006)-Lexus-Scion-Toyota
Volkswagen owns:-Audi-Bentley-Bugatti-Lamborghini-SEAT-Skoda-Volkswagen


The automotive world is constantly changing so this article is will updated as needed.