The Mercedes Sequentronic 6-speed robotic transmission was assembled from 2000 to 2007 and installed in popular models of the German concern, such as the C-Class, E-Class, and CLK-Class. This single-clutch robotic transmission is based on the 716.6 6-speed manual transmission and Magneti Marelli hydraulic actuators.
Specifications
| Type | single-clutch robotic transmission |
| Number of gears | 6 |
| Type of drive | rear |
| Engine volume, l | up to 2.2 (modification based on SG-S270) up to 3.7 (modification based on SG-S370) |
| Torque output, Nm | up to 270 (modification based on SG-S270) up to 370 (modification based on SG-S370) |
| Recommended oil | MB 235.10 + MB 345.0 * |
| Oil capacity, liter | 1.5 + 0.5 * (modification based on SG-S270) 1.7 + 0.5 * (modification based on SG-S370) |
| Partial replacement, liter | 1.2 + 0.5 * |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~300 000 km |
| Weight, kg | 51 |
* – The oil is changed in both the gearbox and the hydraulic drive.
Gear ratios Mercedes Sequentronic
Using the example of a 2002 Mercedes C 220 CDI with a 2.2-liter diesel engine:
| Main | 2.65 |
| 1st | 5.014 |
| 2nd | 2.831 |
| 3rd | 1.789 |
| 4th | 1.256 |
| 5th | 1.000 |
| 6th | 0.828 |
| Reverse | 4.569 |
Using
The transmission was installed on:
- Mercedes CLK-Class C208 in 2000 – 2003; CLK-Class C209 in 2002 – 2005;
- Mercedes C-Class W203 in 2000 – 2007;
- Mercedes E-Class W211 in 2002 – 2006;
- Mercedes SL-Class R230 in 2003 – 2006.
Disadvantages of the Mercedes Sequentronic gearbox
- This is a robotic transmission with a hydraulic control system, so keep an eye on its fluid;
- The pump does not tolerate low hydraulic fluid levels and fails due to overheating;
- If the fluid is not changed frequently, the solenoids in the robotic transmission wear out and fail;
- At 200,000 to 250,000 km, the hydraulic accumulator often requires replacement;
- Owners also frequently replace the pump relay and pressure sensor.
