IsItAGoodCar
Reliability Guide

Common Problems with the
2020 McLaren 720S / 765LT

We've identified 2 known issues that can affect the 2020 McLaren 720S / 765LT. 1 of these are serious faults that could be expensive to repair.

2
Known Issues
1
Serious
1
Moderate
0
Minor

All Known Issues

Accumulator Failure (PCC II)

SeriousSuspension & Chassis

The nitrogen-filled hydraulic accumulators that manage roll and pitch eventually fail, leading to a harsh ride and suspension warnings.

Est. Repair Cost: £1,500–£2,200
Warning Signs:

Suspension Fault warning, Excessively bouncy or harsh ride, Power steering pump whining

What to Inspect:
  • Drive the car over a series of small bumps at moderate speed
  • Listen for hydraulic pump strain when selecting lifting modes
Verified by IsItAGoodCar Research Team

Stress Cracks in Gorilla Glass

ModerateBodywork & Rust

The specialized lightweight glass used for the upper door sections and pillars can develop stress cracks.

Est. Repair Cost: £1,500–£3,000 per panel
Warning Signs:

Visible hairline cracks in the glass panels, Water ingress during heavy rain

What to Inspect:
  • Close inspection of all glass panels, particularly where they meet the bodywork
Verified by IsItAGoodCar Research Team

Buying Tips for 2020 McLaren 720S / 765LT

  • ✓Check the Gorilla Glass roof panels and C-pillars for any stress cracks
  • ✓Verify the ride quality is supple; a "bouncy" or harsh ride indicates failed accumulators
  • ✓Ensure the active rear wing (Airbrake) operates smoothly through its full range of motion
  • ✓Look for evidence of the latest software updates to the PCC II system
Check a 2020 McLaren 720S / 765LT by Registration