IsItAGoodCar
Reliability Guide

Common Problems with the
2019–2020 Lexus LS (Mk5)

We've identified 2 known issues that can affect the 2019–2020 Lexus LS (Mk5). None are considered critical, but they're worth knowing about before you buy.

2
Known Issues
0
Serious
1
Moderate
1
Minor

All Known Issues

12V Battery Drain

ModerateElectrics & Electronics

Like many modern high-tech Lexus models, the LS 500h can suffer from a flat 12V battery if left unused for as little as a week.

Est. Repair Cost: £200–£300
Warning Signs:

Car unresponsive to key fob, Multiple warning lights on startup, Settings resetting

What to Inspect:
  • Ask about the car's usage patterns
  • Check for a recent 12V battery replacement
Verified by IsItAGoodCar Research Team

Run-Flat Tyre Noise and Wear

MinorSuspension & Chassis

The standard run-flat tyres are prone to road noise and can wear unevenly, leading to a degraded driving experience.

Est. Repair Cost: £300 per tyre
Warning Signs:

Loud humming from the road, Vibration through the steering wheel, Premature inner-edge wear

What to Inspect:
  • Check the brand and condition of the tyres
  • Listen for excess road roar at motorway speeds
Verified by IsItAGoodCar Research Team

Buying Tips for 2019–2020 Lexus LS (Mk5)

  • ✓Check the 12V battery health; this car has a high parasitic draw and needs regular driving.
  • ✓Note the ride quality; models with 20-inch run-flat tyres can feel surprisingly firm on broken UK roads.
  • ✓The pre-2021 models use the trackpad-only interface; ensure you are comfortable with it.
20182021
Check a 2019–2020 Lexus LS (Mk5) by Registration