IsItAGoodCar
Reliability Guide

Common Problems with the
2018 Rolls-Royce Cullinan

The Cullinan launched as the first Rolls-Royce SUV, featuring a 6.75-litre twin-turbo V12. These early cars are the most affordable but carry the highest risk of transfer case vibration and air suspension issues.

What changed for 2018

  • •UK launch of Cullinan
  • •6.75-litre twin-turbo V12
  • •First Rolls-Royce SUV

Common MOT watch-outs

  • !Transfer case and drivetrain vibration
  • !Air suspension leaks
  • !Expensive tyre replacement costs
3
Known Issues
0
Serious
2
Moderate
1
Minor

All Known Issues

Transfer Case and Drivetrain Vibration

ModerateGearbox & Transmission

Some early models have reported minor vibrations or "shudder" during low-speed tight turns, often requiring a fluid flush or transfer case update.

Est. Repair Cost: £600–£3,000
Warning Signs:

Vibration when parking, Slight hesitation on take-off

What to Inspect:
  • Perform tight figure-eight turns at low speed
  • Check for latest software updates in service records
Verified by IsItAGoodCar Research Team

Ride Height Calibration and Air Suspension Faults

ModerateSuspension & Chassis

The Cullinan's advanced air suspension with planar system can develop ride height calibration issues, causing the car to sit unevenly or display suspension fault warnings. The system relies on ride height sensors that can become misaligned or fail.

Est. Repair Cost: £1,000–£3,000
Warning Signs:

Car sits unevenly after parking, "Suspension Fault" warning on dashboard, Harsher ride quality than expected, Compressor running more frequently than normal

What to Inspect:
  • Check ride height at all four corners after the car has stood overnight
  • Scan for suspension-related fault codes
  • Verify the car self-levels correctly on a test drive
Verified by IsItAGoodCar Research Team

Software and Connectivity Niggles

MinorElectrics & Electronics

Early Cullinans suffered from occasional glitches in the infotainment and connected services, usually resolved by firmware updates.

Est. Repair Cost: £200–£500 (Software update)
Warning Signs:

Screen freezing, Navigation errors, Bluetooth connectivity issues

What to Inspect:
  • Ensure the latest iDrive-based software version is installed
Verified by IsItAGoodCar Research Team

Buying Tips for 2018 Rolls-Royce Cullinan

  • ✓Inspect the suspension carefully for leaking dampers
  • ✓Ensure the gearbox shifts cleanly when cold and warm
  • ✓Budget for high tyre costs due to 22" wheels
2019–2020
Check a 2018 Rolls-Royce Cullinan by Registration