IsItAGoodCar
Reliability Guide

Common Problems with the
2007–2010 Lexus GS (Mk3)

We've identified 2 known issues that can affect the 2007–2010 Lexus GS (Mk3). 1 of these are serious faults that could be expensive to repair.

2
Known Issues
1
Serious
1
Moderate
0
Minor

All Known Issues

Brake Actuator Failure

SeriousBrakes

The hydraulic brake actuator is a common failure point on this generation, leading to a loss of power assistance and a very high repair bill.

Est. Repair Cost: £1,800–£2,500
Warning Signs:

Brake warning lights, Constant humming/cycling from under the bonnet, Barking noise when pressing the pedal

What to Inspect:
  • Listen for the brake pump cycling too frequently (more than once every few presses)
  • Check for ABS-related fault codes
Verified by IsItAGoodCar Research Team

Leaking Rear Shock Absorbers

ModerateSuspension & Chassis

The Adaptive Variable Suspension (AVS) shocks are prone to leaking and are extremely expensive to replace with OEM parts.

Est. Repair Cost: £600–£1,000
Warning Signs:

Mist of oil on the shock absorber body, Bouncy ride, AFS warning light on dashboard

What to Inspect:
  • Inspect the rear shocks for oil leaks
  • Check if the car sits level
Verified by IsItAGoodCar Research Team

Buying Tips for 2007–2010 Lexus GS (Mk3)

  • ✓On the GS 450h, ensure the hybrid battery has a recent "Hybrid Health Check" certificate from Lexus.
  • ✓Listen for a clunking from the rear which usually indicates leaking shock absorbers (very common on cars with AFS).
  • ✓Avoid the GS 300 if it shows signs of rough idling, as carbon buildup on valves can be an issue.
20062011
Check a 2007–2010 Lexus GS (Mk3) by Registration