The 7-speed preselective robotic gearbox Mercedes 700.4 or AMG SpeedShift DCT has been produced since 2009 and is installed only on the most powerful supercars of the German concern such as SLS and AMG GT. This robotic gearbox is only a modification of the Italian Getrag 7DCL750 gearbox.
This series includes: 7G-DCT, AMG SpeedShift DCT, 8G-DCT.
Specifications
Production years | since 2009 |
Type | preselective robotic transmission |
Number of gears | 7 |
Type of drive | all wheel / rear |
Engine volume, l | up to 6.2 |
Torque output, Nm | up to 800 |
Recommended oil | MB 236.25 + MB 236.26 |
Oil capacity, liter | 8.7 + 4.0 |
Replacing the oil | every 50,000 km |
Replacing the filter | every 50,000 km |
Gearbox lifespan, km | ~250 000 |
Weight, kg | 136 |
Gear ratios Mercedes AMG SpeedShift DCT
Using the example of a Mercedes SLS AMG 2012 with a 6.2 liter engine:
Main | 3.670 |
1st | 3.397 |
2nd | 2.186 |
3rd | 1.626 |
4th | 1.285 |
5th | 1.029 |
6th | 0.839 |
7th | 0.720 |
Reverse | 2.790 |
The transmission was installed on:
- Mercedes AMG GT-Class C190 since 2014;
- Mercedes SLS-Class C197 in 2009 – 2014.
Disadvantages of the Mercedes 700.4 gearbox
- This is a rather rare gearbox for supercars and there is little information on its breakdowns.
- On specialized forums, oil leaks are actively discussed, especially around the input shaft oil seal.
- Moreover, this problem affects not only the SLS, it smoothly migrated to the AMG GT.
- Also, active owners change the clutch by 50,000 km.
- Do not forget to renew the lubricant in both the hydraulic and mechanical parts of the gearbox.