IsItAGoodCar
Reliability Guide

Common Problems with the
2023 McLaren 750S

The 750S launched as the replacement for the 720S, featuring a 4.0-litre twin-turbo V8 producing 749bhp. These early cars are the most affordable but carry the same PCC III accumulator concerns. The 750S benefited from improved aerodynamics and revised suspension.

What changed for 2023

  • •UK launch of 750S
  • •4.0-litre twin-turbo V8
  • •PCC III suspension system

Common MOT watch-outs

  • !PCC III accumulator wear
  • !Paint bubbling from aluminium oxidation
  • !IRIS infotainment glitches
4
Known Issues
2
Serious
2
Moderate
0
Minor

All Known Issues

PCC III Accumulator Wear

SeriousSuspension & Chassis

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.

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

Suspension Fault warning, Harsh ride in Normal mode, Inconsistent damping between modes, Steering dead spots

What to Inspect:
  • Test drive over varied surfaces in Normal mode
  • Check for PCC error messages on startup
  • Verify mode changes feel distinct
Verified by IsItAGoodCar Research Team

Brake Line Routing Recall

SeriousBrakes

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.

Est. Repair Cost: £0 (Recall)
Warning Signs:

Unusual rear wheel lock-up under braking, ABS/ESP warning light, Pulling to one side during emergency braking

What to Inspect:
  • Verify the recall has been completed by checking the VIN with McLaren
  • Test ABS activation in a safe environment
  • Check for any brake-related warning lights
Verified by IsItAGoodCar Research Team

Software and Infotainment Glitches

ModerateElectrics & Electronics

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.

Est. Repair Cost: £0–£500 (Software update)
Warning Signs:

Climate control temperature changes randomly, Window stops working or catches on pillar cap, Infotainment screen freezes or reboots, Dashboard warning lights for door position

What to Inspect:
  • Set the climate control and verify it holds the temperature
  • Operate all windows fully
  • Check the infotainment system responsiveness
  • Ask for confirmation of all software updates applied
Verified by IsItAGoodCar Research Team

Build Quality and Panel Fit Issues

ModerateBodywork & Rust

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.

Est. Repair Cost: £500–£3,000 (Adjustment/Repair)
Warning Signs:

Uneven panel gaps, Trim pieces rattling or loose, Active wing deployment hesitation, Wind noise from poor door seals

What to Inspect:
  • Detailed walkaround checking all panel gaps
  • Operate the active rear wing through its full range
  • Check door seals and window alignment
  • Listen for wind noise on a short drive
Verified by IsItAGoodCar Research Team

Buying Tips for 2023 McLaren 750S

  • ✓Check the PCC III accumulators for wear
  • ✓Inspect the paintwork for bubbling
  • ✓Verify the IRIS system is responsive
2024
Check a 2023 McLaren 750S by Registration