Comforting support from the worldʼs very first 9-speed automatic transmission.

A Mercedes-Benz innovation

The 9G-TRONIC is the world's first 9-speed automatic transmission with hydrodynamic torque converter in the premium segment. The innovative transmission, developed independently by Mercedes-Benz, offers more gears, more comfort and more economy. The nine forward gears with 9G-TRONIC allow a larger gear ratio range with even smaller jumps in engine speed between gears. This results in even faster, smoother and more efficient gear changes for enhanced driving comfort and reduced noise levels.

9G-TRONIC Automatic Transmission

With nine forward gears, the 9G-TRONIC automatic transmission introduces a whole new dimension of efficiency, comfort and dynamism. Its high efficiency helps to reduce fuel consumption. The wider ratio range allows a reduction in engine speed. Performance remains excellent while ride comfort is enhanced and noise levels are reduced. Smaller gear ratio increments and faster gear changes lead to even greater responsiveness and agility. At the same time, 9G-TRONIC impresses with smooth, barely perceptible gear shifting. As 9G-TRONIC is able to skip individual gears, multiple downshifts are possible for fast and powerful sprints.


    Ergonomically designed and intuitive to operate, the DIRECT SELECT lever on the steering column allows the driver to set the automatic transmission positions P, N, R and D simply by giving it a light tap. The function commands are transmitted wholly electronically. Additional steering-wheel gearshift paddles also facilitate manual pre-selection of the seven gears, so drivers can decide whether they want to change gear themselves using the steering-wheel gearshift paddles or whether they prefer this to be taken care of automatically.

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