American automaker Chevrolet has revealed its brand-new nine-speed automatic transmission – Hydra-Matic 9T50 nine-speed – which will be available in the new Cruze diesel. It was developed from the ground up by General Motors and it is GM's first nine-speed unit. The automaker highlighted in an official release that the 9T50 is relatively smaller is size (roughly the same size as a six-speed transmission) and is designed to optimise efficiency, performance and refinement.