Mercedes-Benz 9G-Tronic transmission
| 9G-Tronic | |
|---|---|
Cutaway model of the transmission with components for hybrid drive | |
| Overview | |
| Manufacturer | Daimler AG Jatco Ltd |
| Production | 2013–present |
| Body and chassis | |
| Class | 9-speed longitudinal automatic transmission |
| Related | ZF 8HP · Aisin-Toyota 8-speed · Ford-GM 10-speed |
| Chronology | |
| Predecessor | 7G-Tronic |
9G-Tronic is Mercedes-Benz's trademark name for its 9-speed automatic transmission, starting off with the W9A 700 converter-9-gear-automatic with 700 N⋅m (516 lb⋅ft) maximum input torque (German: Wandler-9-Gang-Automatik bis 700 N⋅m Eingangsdrehmoment • type 725.0) as core model. The transmission was used in the E 350 BlueTEC in 2013 for the first time, and successively replaced both the 7-speed 7G-Tronic (PLUS) transmission and the 5-speed 5G-Tronic transmission. It includes versions for a maximum input torque of 1,000 N⋅m (738 lb⋅ft).
After the 5G- and 7G-Tronic, this is the 3rd generation of modern automatic transmissions. It is identified internally as NAG3 (New Automatic Gearbox 3rd generation).
The Jatco 9AT transmission is based on the same globally patented gearset concept.
Gear Model |
R | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Total Span |
Span Center |
Avg. Step |
Compo- nents |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W9A All · 2013 | −4.932 | 5.503 | 3.333 | 2.315 | 1.661 | 1.211 | 1.000 | 0.865 | 0.717 | 0.601 | 9.150 | 1.819 | 1.319 | 4 Gearsets 3 Brakes 3 Clutches |
| W9A All · 2016 | −4.798 | 5.354 | 3.243 | 2.252 | 1.636 | 1.211 | 1.000 | 0.865 | 0.717 | 0.601 | 8.902 | 1.795 | 1.314 | |
| 9AT All · 2019 | −4.799 | 5.425 | 3.263 | 2.250 | 1.649 | 1.221 | 1.000 | 0.862 | 0.713 | 0.597 | 9.091 | 1.799 | 1.318 | |
| ||||||||||||||