IsItAGoodCar

Common Problems with the
2017–2019 McLaren 720S / 765LT

We've identified 3 known issues that can affect the 2017–2019 McLaren 720S / 765LT. 1 of these are serious faults that could be expensive to repair.

3
Known Issues
1
Serious
1
Moderate
1
Minor

The 2017–2019 period has 2 more issues than the McLaren 720S / 765LT average across all year periods.

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.

Most affected: All Super Series models

Estimated cost: £1,500–£2,200Affects: 2017–2023Often appears around: 15k-30k miles

Typical symptoms

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

What to inspect before you buy

  • ✓Drive the car over a series of small bumps at moderate speed
  • ✓Listen for hydraulic pump strain when selecting lifting modes

Stress Cracks in Gorilla Glass

ModerateBodywork & Rust

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

Most affected: Coupe models

Estimated cost: £1,500–£3,000 per panelAffects: 2017–2021Often appears around: Age and vibration related

Typical symptoms

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

What to inspect before you buy

  • ✓Close inspection of all glass panels, particularly where they meet the bodywork

Panel Alignment and Trim Gaps

MinorBodywork & Rust

Earlier production cars occasionally show inconsistent panel gaps, especially around the front trunk (frunk) and rear deck.

Most affected: Early production cars

Estimated cost: £500–£1,500 (Adjustment)Affects: 2017–2019Often appears around: N/A

Typical symptoms

  • •Uneven gaps between body panels
  • •Trim pieces feeling loose

What to inspect before you buy

  • ✓Visual walkaround focusing on panel consistency

Buying Tips for the 2017 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
2020–2021 McLaren 720S / 765LT

Browse 2017–2019 McLaren 720S / 765LT in our Directory

View MOT history, registration data, and reliability scores for 2017–2019 McLaren 720S / 765LT vehicles.

View 2017–2019 Directory

Other McLaren 720S / 765LT Year Periods

2017–20192020–20212022–2023

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