Rear Brake Disc Corrosion
MinorBrakesRegenerative braking means the rear friction brakes do relatively little work on the IS 300h, so discs can corrode badly and fail MOT inspections despite otherwise easy lives.
Est. Repair Cost: £200–£400
Reliability GuideCommon Problems with the
Common Problems with the
2017 Lexus IS (XE30)
A facelift in 2017 sharpened the styling further, improved interior materials, and retuned the suspension to enhance ride comfort while maintaining the car's engaging handling.
What changed for 2017
- •Exterior facelift with revised headlights, larger air intakes, and new tail lights.
- •Suspension retuned for improved compliance and steering feel.
Common MOT watch-outs
- !Wear on brake pads and discs, though regeneration extends their life on the hybrid.
- !Minor sensor faults relating to the Lexus Safety System+.
3
Known Issues
0
Serious
0
Moderate
3
Minor
All Known Issues
Remote Touch Controller and Infotainment Glitches
MinorElectrics & ElectronicsThe controller can lag, skip inputs or feel inconsistent, and some early systems also suffer from Bluetooth or screen glitches.
Est. Repair Cost: £200–£700
Weak 12V Battery Causing Hybrid Warnings
MinorElectrics & ElectronicsA tired auxiliary battery can trigger misleading warning messages, slow startup and odd behaviour even though the main hybrid system is healthy.
Est. Repair Cost: £150–£250
Buying Tips for 2017 Lexus IS (XE30)
- ✓Ensure the hybrid battery cooling fan (intake near the rear seats) is clear of dust and debris.
- ✓Check the operation of the motorized instrument cluster ring on F Sport models, a cool feature that can occasionally stick.