The AMG SpeedShift MCT 7 7-speed automatic transmission was assembled at the company’s factory from 2008 to 2019 and installed in popular performance models such as the C63, E63, CL63, and SL63. It’s essentially a 722.9 transmission with a wet multi-plate clutch pack instead of a torque converter.
Specifications
| Type | automatic transmission |
| Number of gears | 7 |
| Type of drive | rear / all wheel |
| Engine volume, l | up to 6.2 |
| Torque output, Nm | up to 1000 |
| Recommended oil | ATF MB 236.14 |
| Oil capacity, liter | 7.1 |
| Partial replacement, liter | 5.0 |
| Maintenance | every 30 000 km |
| Gearbox lifespan, km | ~300 000 km |
| Weight, kg | 80 |
Gear ratios Mercedes AMG SpeedShift MCT 7
Using the example of a 2010 Mercedes SL63 AMG with a 6.2-liter engine:
| Main | 3.06 |
| 1st | 4.377 |
| 2nd | 2.859 |
| 3rd | 1.921 |
| 4th | 1.368 |
| 5th | 1.000 |
| 6th | 0.820 |
| 7th | 0.728 |
| Reverse | 3.416 / 2.231 |
Using
The transmission was installed on:
- Mercedes C-Class W204 in 2011 – 2015; C-Class W205 in 2015 – 2018;
- Mercedes CL-Class C216 in 2010 – 2013; CL-Class C217 in 2014 – 2017;
- Mercedes CLS-Class C218 in 2011 – 2018;
- Mercedes E-Class W212 in 2009 – 2016;
- Mercedes S-Class W221 in 2010 – 2013; S-Class W222 in 2013 – 2017;
- Mercedes SL-Class R230 in 2008 – 2011; SL-Class R231 in 2012 – 2019.
Disadvantages of the Mercedes AMG SpeedShift MCT 7 gearbox
- In the early years, owners constantly complained about jerking and harsh shifting;
- This transmission was also criticized for frequently switching to manual mode unintentionally;
- However, after the 2011 update, the only problem remaining was jerking in cold weather;
- And if you avoid overheating and change the oil regularly, this automatic transmission will last a long time;
- The ZF clutch pack has a decent lifespan, but the replacement cost is not encouraging.
