IsItAGoodCar
Reliability Guide

Common Problems with the
2019–2020 Lexus GS (Mk4)

We've identified 1 known issue that can affect the 2019–2020 Lexus GS (Mk4). None are considered critical, but they're worth knowing about before you buy.

1
Known Issues
0
Serious
1
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

Buying Tips for 2019–2020 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.
2018
Check a 2019–2020 Lexus GS (Mk4) by Registration