To drive two M/Gs simultaneously when a hybrid automobile runs as an electric automobile to do with M/Gs of smaller capacity.

A drive device for an automobile includes an input shaft 10, an output shaft 12, a power splitting planetary gear set which consists of a first planetary gear 20 having three rotary elements of a first sun gear 22, a first ring gear 24, and a first carrier 28, and permits power splitting, a first motor generator 56, and a second motor generator 58, wherein the input shaft 10 is connected to the first ring gear 24 or can be connected thereto, the output shaft 12 is connected to the first carrier 28, the first motor generator 56 is connected to the first sun gear 22, and the second motor generator 58 can be connected to the first carrier 28 via a mechanical connecting/releasing means 70 and to the first ring gear 24 via a first clutch 60.