Bentley cars use only top-of-the-line ZF automatic transmissions with torque converters, designed for high power and maximum driving comfort.
What is a Bentley box?
- ZF 6HP, 8HP – classic 6 and 8-speed automatic transmissions.
- Adapted for high-performance engines (V8, W12).
- Tiptronic function – the ability to shift gears manually.
How is the repair going?
- Diagnostics – detailed electronic and mechanical testing, error codes.
- Disassembly and troubleshooting – analysis of each part (frictions, solenoids, valve block).
- Replacing friction and seals is the most common problem with load or mileage.
- Valve block repair – precise adjustment for gear changes.
- Oil change – only ZF approved oil, very important for high performance.
- Adaptation and final testing – electronic adaptation to the car system.
The most common problems:
- Knocks or delay when shifting
- Slipping under heavy load
- Hydraulic pressure loss
- Oil overheating
- Solenoid malfunction
Technical disadvantages:
- High repair and maintenance costs
- Sensitivity to oil quality and load conditions
- Professional diagnostics and maintenance required
- Rarely available original parts
Where are ZF gearboxes installed in Bentley models?
- Bentley Continental GT, Flying Spur, Bentayga, etc
Approximate repair costs:
- Oil change: €500–800
- Valve block repair: €1500–2500
- Full repair (ZF): €3000–6000+
