The 7-speed preselective robotic gearbox ZF 7DT-70 has been produced at a plant in Germany since 2008 and is installed only on charged modifications of the Porsche 911 with the Turbo and Turbo S index. There is a version of this PDK for rear-wheel drive cars 7DT70HL and all-wheel drive 7DT70HLA.
7DT family: 7DT-45, 7DT-70, 7DT-75.
Specifications
| Production years | since 2008 |
| Type | robotic transmission |
| Number of gears | 7 |
| Type of drive | all wheel / rear |
| Engine volume, l | up to 3.8 |
| Torque output, Nm | up to 780 |
| Recommended oil | Pentosin FFL-3 + PTX 75W-90 |
| Oil capacity, liter | 5.4 + 3.5 |
| Replacing the oil | every 60,000 km |
| Replacing the filter | every 60,000 km |
| Gearbox lifespan, km | ~300 000 |
| Weight, kg | 116 |
Gear ratios ZF 7DT-70
Using the example of a Porsche 911 Turbo S 2014 with a 3.8 liter engine:
| Main | 3.44 |
| 1st | 3.91 |
| 2nd | 2.29 |
| 3rd | 1.58 |
| 4th | 1.18 |
| 5th | 0.94 |
| 6th | 0.79 |
| 7th | 0.62 |
| Reverse | 3.55 |
The transmission was installed on:
- Porsche 911 VI (997) in 2008 – 2012;
- Porsche 911 VII (991) in 2011 – 2019.
Disadvantages of the ZF 7DT-70 gearbox
- The first years of production of the gearbox were famous for its jerky operation, but then the firmware corrected everything.
- Now the main problems are caused by wear of solenoids and contamination of the valve body.
- Failure of fluid pressure and temperature sensors is also quite common.
- Not often, but still sometimes the speed and gear position sensors fail.
- If driving aggressively, the clutch block will have to be replaced at a mileage of 50,000 km.
