The Mercedes AMG SpeedShift TCT 9 9-speed automatic transmission has been produced in Germany since 2016 and is installed in high-performance models such as the C43, GLC 43, GLE 53, G63, AMG GT. Essentially, it is a variant of the 9G-Tronic transmission with a torque converter for AMG models.
Specifications
| Type | automatic transmission |
| Number of gears | 9 |
| Type of drive | all wheel |
| Engine volume, l | up to 4.0 |
| Torque output, Nm | up to 900 |
| Recommended oil | ATF MB 236.17 |
| Oil capacity, liter | 9.9 |
| Partial replacement, liter | 8.2 |
| Maintenance | every 30 000 km |
| Gearbox lifespan, km | ~300 000 km |
| Weight, kg | 95 |
Gear ratios Mercedes AMG SpeedShift TCT 9
Using the 2017 Mercedes C43 AMG with a 3.0 bi-turbo engine as an example:
| Main | 3.07 |
| 1st | 5.354 |
| 2nd | 3.243 |
| 3rd | 2.252 |
| 4th | 1.636 |
| 5th | 1.211 |
| 6th | 1.000 |
| 7th | 0.865 |
| 8th | 0.717 |
| 9th | 0.601 |
| Reverse | 4.798 |
Using
The transmission was installed on:
- Mercedes AMG GT X290 in 2018 – …;
- Mercedes C-Class W205 in 2016 – 2018;
- Mercedes CLE-Class C236 in 2024 – …;
- Mercedes CLS-Class C257 in 2018 – 2023;
- Mercedes E-Class W213 in 2018 – 2023; E-Class W214 in 2024 – …;
- Mercedes G-Class W463 in 2018 – 2024; G-Class W465 in 2024 – …;
- Mercedes GLC-Class X253 in 2019 – 2022;
- Mercedes GLE-Class W167 in 2019 – …;
- Mercedes GLS-Class X167 in 2020 – …
Disadvantages of the Mercedes AMG SpeedShift TCT 9 gearbox
- This is a fairly rare transmission, and its failure rate is low;
- Regularly change the transmission fluid, as it is sensitive to its cleanliness;
- It is important to carefully monitor the radiator’s cleanliness, as this automatic transmission does not tolerate overheating;
- Several cases of automatic transmission control board replacement have been described on specialized forums.
