IsItAGoodCar
Reliability Guide

Common Problems with the
2013–2015 Lexus GS (Mk4)

We've identified 2 known issues that can affect the 2013–2015 Lexus GS (Mk4). None are considered critical, but they're worth knowing about before you buy.

2
Known Issues
0
Serious
2
Moderate
0
Minor

All Known Issues

Clogged Hybrid Battery Cooling Filter

ModerateEngine

Dust buildup on the hybrid battery intake filter causes the battery to overheat, shortening its life and triggering warning lights.

Est. Repair Cost: £50 (Cleaning) / £2,000 (Battery if failed)
Warning Signs:

"Hybrid System Fault" warning, Fan noise from the rear seat area, Reduced fuel economy

What to Inspect:
  • Inspect the filter located near the rear passenger seat base
  • Listen for a loud fan when driving
Verified by IsItAGoodCar Research Team

Seizing Rear Brake Calipers

ModerateBrakes

The rear calipers are known to seize in the UK climate, leading to uneven wear and MOT failure.

Est. Repair Cost: £300–£600
Warning Signs:

One wheel feeling much hotter than others, Reduced fuel economy, Car pulling to one side under braking

What to Inspect:
  • Check the rear discs for even wear
  • Feel for excess heat after a test drive
Verified by IsItAGoodCar Research Team

Buying Tips for 2013–2015 Lexus GS (Mk4)

  • ✓Verify that the hybrid battery cooling fan filter (behind the rear seats) has been cleaned regularly.
  • ✓Test the Remote Touch controller; early versions can be jerky or unresponsive.
  • ✓Check for "binding" rear brakes, as the calipers can seize if not serviced.
20122016
Check a 2013–2015 Lexus GS (Mk4) by Registration