725.0

The 9-speed automatic transmission 9G-Tronic (725.0) was developed by the company Mercedes-Benz and was released in 2013, replacing the model 7G-Tronic.

When developing this gearbox, Mercedes-Benz’s transmission specialists concentrated on simplifying the structure of the transmission, while maintaining its size and implementing the solution with 9 gears, minimum number of planetary gear sets and mechanisms of gear shifting. As a result of intensive computer system analysis and synthesis, transmission engineers solved this problem by means of only 4 planetary gear sets and 6 gear shifting mechanisms.