The Audi ML451 6-speed manual transmission was produced at Getrag from 2007 to 2016 and was installed in models such as the A4 and A5, including the Allroad Quattro and the performance versions of the S4 and S5. This transmission was available in a single all-wheel-drive version, the 0B4.
Specifications
| Type | manual transmission |
| Number of gears | 6 |
| Type of drive | all wheel |
| Engine volume, l | up to 4.2 |
| Torque output, Nm | up to 500 |
| Recommended oil | G 052 911 A2 |
| Oil capacity, liter | 3.8 |
| Partial replacement, liter | 3.5 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~350 000 km |
| Weight, kg | 75 |
Gear ratios Audi ML451
Using the 2012 Audi A4 Avant with a 3.0 TDi diesel as an example:
| Main | 3.682 |
| 1st | 3.667 |
| 2nd | 1.950 |
| 3rd | 1.207 |
| 4th | 0.848 |
| 5th | 0.651 |
| 6th | 0.538 |
| Reverse | 3.222 |
Using
The transmission was installed on:
- Audi A4 B8 (8K) in 2007 – 2015;
- Audi A4 B8 Allroad (8KH) in 2009 – 2011;
- Audi A5 1 (8T) in 2007 – 2016.
Disadvantages of the VW ML451 gearbox
- This is a fairly reliable manual transmission, but it was installed with particularly powerful engines;
- And with aggressive driving, the first gear synchronizers wear out quickly;
- Plus, overly active owners replace the clutch every 50,000-80,000 km;
- And by 150,000 km, the shaft bearings and dual-mass flywheel may require replacement;
- Also worth noting is a service bulletin regarding play in the left axle shaft bearing.
