IsItAGoodCar
Reliability Guide

Common Problems with the
2023 Lexus UX

A significant update brought a much-needed touchscreen infotainment system to the UX, greatly improving usability, alongside upgrades to the hybrid powertrain (now UX 300h) and a larger battery for the electric UX 300e.

What changed for 2023

  • •Introduction of a new touchscreen infotainment system, replacing the touchpad.
  • •Significant upgrade to the UX 300e with a larger battery for improved range, and the hybrid became the more powerful UX 300h.

Common MOT watch-outs

  • !Too new for significant MOT data, but check for early software glitches with the new infotainment.
  • !General wear and tear.
2
Known Issues
0
Serious
1
Moderate
1
Minor

All Known Issues

12V Battery Drain

ModerateElectrics & Electronics

The most common complaint on UX owner forums; the 12V battery is small and can be drained by the car's connected systems.

Est. Repair Cost: £150–£200
Warning Signs:

Weak cranking, "Check Hybrid System" warning caused by low voltage, Keyless entry not working

What to Inspect:
  • Ask if the 12V battery has been replaced with a higher-capacity aftermarket unit (e.g. Yuasa)
Verified by IsItAGoodCar Research Team

Excessive Road Noise (Run-Flats)

MinorSuspension & Chassis

Models on 18-inch wheels with run-flat tyres can suffer from significant road roar on coarse UK motorways.

Est. Repair Cost: £600 (Set of non-run-flat tyres)
Warning Signs:

Loud humming from tyres, Harsh ride over expansion joints

What to Inspect:
  • Check tyre tread and brand
  • Listen for road noise at 60mph+
Verified by IsItAGoodCar Research Team

Buying Tips for 2023 Lexus UX

  • ✓The 2023-onwards models with the touchscreen are vastly superior to use daily; seek these out.
  • ✓If buying the updated UX 300e, verify the improved range meets your needs.
20222024–2025
Check a 2023 Lexus UX by Registration