Mercedes automatic transmissions
The 5G-Tronic (722.6) is a 5-speed AT used in older models (W211, W203). The 7G-Tronic (722.9) is a 7-speed AT, dominant between 2004 and 2016. The 9G-Tronic (725.0) is a newer 9-speed AT found in models from 2014 onward — known for low fuel consumption and exceptionally smooth operation. Compact models (A-Class, CLA, GLA) also use the 7G-DCT dual-clutch transmission.