McLaren 750S Common Problems & Reliability
The 750S is a comprehensive evolution of the 720S, cherry-picking the best of the 765LT. It uses PCC III suspension and weighs less than its predecessor. While mechanically improved, early cars have shown software and build quality niggles.
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Detailed fault breakdown, symptoms, and estimated repair bills by production year.
Most Common McLaren 750S Faults & Repair Costs
PCC III Accumulator Wear
The 750S uses ProActive Chassis Control III, an evolution of the 720S system. The hydraulic accumulators remain a consumable wear item with a similar 3-5 year or 15,000-25,000 mile replacement interval. Failure results in a harsh ride and suspension fault warnings.
Suspension Fault warning, Harsh ride in Normal mode, Inconsistent damping between modes, Steering dead spots
Software and Infotainment Glitches
Early 750S deliveries have been plagued by software issues including infotainment temperature control randomly changing, window position sensor faults, and occasional system reboots. Most have been resolved through OTA updates but verify the latest firmware is installed.
Climate control temperature changes randomly, Window stops working or catches on pillar cap, Infotainment screen freezes or reboots, Dashboard warning lights for door position
Build Quality and Panel Fit Issues
Some early 750S cars have experienced build quality issues including inconsistent panel gaps, trim pieces coming loose, and the active aero system failing before delivery. While McLaren has improved QA, inspect carefully.
Uneven panel gaps, Trim pieces rattling or loose, Active wing deployment hesitation, Wind noise from poor door seals
Brake Line Routing Recall
McLaren recalled certain 750S vehicles due to incorrectly routed brake lines that could cause the ABS and ESP to apply braking force to the wrong rear wheel, potentially causing a wheel lock-up. Dealers inspect and correct the connections free of charge.
Unusual rear wheel lock-up under braking, ABS/ESP warning light, Pulling to one side during emergency braking
Buying a used McLaren 750S? 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.