Gearbox Mercedes 8G-DCT (724.1)

The 8-speed robotic gearbox 724.1 or Mercedes 8G-DCT has been produced since 2019 and is installed on front-wheel drive and all-wheel drive models of the MFA2 platform such as GLA-Class and GLB-Class. This preselective robotic gearbox with two wet clutches is produced at a plant in Romania.

This series includes: 7G-DCT, AMG SpeedShift DCT, 8G-DCT.


Production years since 2019
Type robotic transmission
Number of gears 8
Type of drive front / all wheel
Engine volume, l up to 2.0
Torque output, Nm up to 520
Recommended oil MB 236.22
Oil capacity, liter 8.0
Replacing the oil every 60,000 km
Replacing the filter every 60,000 km
Gearbox lifespan, km ~300 000
Weight, kg 83

Gear ratios Mercedes 8G-DCT

Using the example of a Mercedes GLB-Class 2020 with a 2.0 liter diesel engine:

Main n/a
1st 4.257
2nd 2.987
3rd 1.961
4th 1.375
5th 1.000
6th 0.776
7th 0.604
8th 0.480
Reverse 3.575

The transmission was installed on:

  • Mercedes A-Class W177 since 2019;
  • Mercedes B-Class W247 since 2019;
  • Mercedes CLA-Class C118 since 2019;
  • Mercedes GLA-Class H247 since 2019;
  • Mercedes GLB-Class X247 since 2019.

Disadvantages of the Mercedes 724.1 gearbox

  • This is a completely new gearbox and there are no large statistics on its malfunctions yet.
  • On specialized forums they complain about various glitches when driving in traffic jams or starting up a hill.
  • A number of new firmwares have been released and most software problems have been fixed.
  • As before, with overly active driving you can burn out clutches even up to 100,000 km.
  • And don’t forget to renew the lubricant in the gearbox or the mechatronics will become clogged with wear products.

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