The 8-speed preselective robotic gearbox ZF 8DT-55 has been produced at a plant in Germany since 2019 and is installed on basic modifications of the Porsche 911 in the 992 body, such as the Carrera S and Carrera GTS. There is a version of this PDK for rear-wheel drive cars 8DT55HL and all-wheel drive 8DT55HLA.
8DT family: 8DT-55, 8DT-80.
Specifications
| Production years | since 2019 |
| Type | robotic transmission |
| Number of gears | 8 |
| Type of drive | all wheel / rear |
| Engine volume, l | up to 3.0 |
| Torque output, Nm | up to 600 |
| Recommended oil | Titan FFL-8 + PTX FE 75W-80 |
| Oil capacity, liter | n/a |
| Replacing the oil | every 60,000 km |
| Replacing the filter | every 60,000 km |
| Gearbox lifespan, km | ~300 000 |
| Weight, kg | 128 |
Gear ratios ZF 8DT-55
Using the example of a Porsche 911 Carrera 2020 with a 3.0 Biturbo engine:
| Main | 3.12 |
| 1st | 4.89 |
| 2nd | 3.17 |
| 3rd | 2.15 |
| 4th | 1.56 |
| 5th | 1.18 |
| 6th | 0.94 |
| 7th | 0.76 |
| 8th | 0.61 |
| Reverse | 3.99 |
The transmission was installed on:
- Porsche 911 VIII (992) since 2019.
Disadvantages of the ZF 8DT-55 gearbox
- As always, in the first years of production there were problems with shocks and everything was treated with firmware.
- You need to regularly update the lubricant or you will have to clean the valve body at 100,000 km.
- For an overly active owner, the clutch block may wear out up to 50,000 km.
- It is also necessary to note the very high cost of a new gearbox.
