The 2008 BMW 750Li uses a six-speed automatic transmission, built by ZF and commonly referred to as the ZF 6HP26, paired with BMW's Steptronic manual shift feature. This setup drives the 4.8-liter V8 in rear-drive configuration.
Transmission type and configuration
The decision to use a six-speed automatic was standard for the 7 Series in that era. The ZF 6HP26 is a robust torque-converter automatic designed to handle the V8 output and provide smooth gear changes in daily driving and sportier conditions. The system includes a Steptronic mode for manual shifting via the gear selector or steering wheel paddles in some trims.
Key features of the transmission include:
- Type: 6-speed automatic (ZF 6HP26)
- Drivetrain: Rear-wheel drive
- Shifting: Automatic with Steptronic (manual shift) mode
- Engine pairing: N62 4.8-liter V8
- Vehicle context: Used in the E65/E66 7 Series lineup circa 2005–2010
These features indicate a traditional automatic setup designed for a balance of comfort and performance in the 750Li.
Maintenance and reliability considerations
Like any high-end European automatic, the reliability and longevity of the transmission depend on proper maintenance. Owners should follow BMW/ZF guidelines and consider proactive service to reduce the risk of shifting issues as the car ages.
Maintenance and reliability details:
- Fluid service: The transmission requires ATF compatible with ZF LifeGuard or Dexron VI-quality fluids, with service typically performed as needed based on mileage and driving conditions.
- Service intervals: In practice, many owners perform a drain-and-fill every 60,000 miles (about 96,000 km) or as recommended by a professional, though exact intervals can vary by vehicle history and usage.
- Monitoring: If you notice slipping, hard or delayed shifts, or warning lights related to transmission control, have the mechatronics unit and valve body inspected by a qualified technician.
- Software updates: Ensure transmission control software is up to date, as updates can improve shifting behavior and reliability.
Regular maintenance can help preserve the transmission's smooth operation and reduce the risk of expensive repairs in the long term.
Summary
The 2008 BMW 750Li is equipped with a six-speed automatic transmission built by ZF (commonly the 6HP26) with Steptronic manual shifting. It is paired with the N62 V8 and rear-wheel drive, delivering a refined blend of comfort and performance characteristic of the late-2000s 7 Series. Routine maintenance, especially timely ATF service and software updates, is key to longevity.