daimler is benz i think and has all the mercedes models and chrysler is the american car company and also includes dodge i think
gm has tons of tie ups and companies under them .. only know chevy , opel and daewoo since they were all in india

not sure if they have any relations with subaru since they released the forester here under the chevy name
only thing i know for sure is fiat they own fiat, maserati, alfa romeo , lancia and somehing else