McLaren 720S / 765LT Common Problems & Reliability
A performance powerhouse with the complex ProActive Chassis Control II system. While very capable, the hydraulic accumulators are a known wear item.
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Detailed fault breakdown, symptoms, and estimated repair bills by production year.
Most Common McLaren 720S / 765LT Faults & Repair Costs
Accumulator Failure (PCC II)
The nitrogen-filled hydraulic accumulators that manage roll and pitch eventually fail, leading to a harsh ride and suspension warnings.
Suspension Fault warning, Excessively bouncy or harsh ride, Power steering pump whining
- 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
The specialized lightweight glass used for the upper door sections and pillars can develop stress cracks.
Visible hairline cracks in the glass panels, Water ingress during heavy rain
- Close inspection of all glass panels, particularly where they meet the bodywork
Panel Alignment and Trim Gaps
Earlier production cars occasionally show inconsistent panel gaps, especially around the front trunk (frunk) and rear deck.
Uneven gaps between body panels, Trim pieces feeling loose
- Visual walkaround focusing on panel consistency
Buying a used McLaren 720S / 765LT? Always check for hidden finance and write-off history.
Mechanical problems are only half the battle. Over 1 in 3 UK used cars checked have unpaid finance or accident write-off records that could cause you to lose the car or thousands in value.