Automatic transmission

An automatic transmission comprising:

• an input shaft, an output shaft, a first multiple planetary gear set having first, second, third and fourth elements corresponding respectively in an order of arrangement thereof to four elements arranged sequentially at intervals corresponding to gear ratios on a speed diagram, and a second multiple planetary gear set having fifth, sixth, seventh and eighth elements corresponding respectively in an order of arrangement thereof to four elements arranged sequentially at intervals corresponding to gear ratios on a speed diagram,
• wherein
• the first element is a second sun gear coupled to the input shaft via a third clutch and meshes with a common ring gear via a long pinion and a pinion supported rotatably by a common carrier and meshing with each other,
• the second element is a common ring gear coupled directly to the fifth element and meshing with one of the long pinion and the pinion,
• the third element is the common carrier fixed via a first brake;
• the fourth element is a first sun gear fixed via a third brake and meshes with the other one of the long pinion and the pinion,
• the fifth element is fixed via a second brake,
• the sixth element is coupled to the input shaft via a second clutch and is fixed via a fourth brake,
• the seventh element is coupled directly to the output shaft,
• the eighth element is coupled to the input shaft via a first clutch, and
• the first to third clutches, the first multiple planetary gear set, and the second multiple planetary gear set are arranged in an order of first to third clutches, first multiple planetary gear set, second multiple planetary gear set in an axial direction, and the third brake and the first sun gear are arranged on a side of the first to third clutches.