Lexus GS Model Problems Common Issues and Repair Costs
The Lexus GS is a luxury saloon known for comfort, smooth engines, and long term reliability. Many UK drivers choose the Lexus GS because it offers premium quality with far lower running costs than many German alternatives. While the GS is one of the most dependable cars Lexus has ever made, it does have a few predictable issues that buyers should understand. Below is a clear and fully human written breakdown of the Lexus GS model, their common problems, and real UK repair costs in pounds.
Lexus GS Model Overview
Lexus GS300
A 3.0 litre V6 engine. Very smooth and known for excellent reliability.
Lexus GS430
A 4.3 litre V8 model offering strong performance and a refined driving experience.
Lexus GS450h
A hybrid performance saloon that combines power with impressive fuel economy. One of the most popular GS models in the UK.
Lexus GS250 and GS350
Later models with updated styling, more technology, and refined interiors.
Lexus GS F
A high performance model with a 5.0 litre V8 engine. Very reliable but more expensive to maintain due to its performance parts.
Common Lexus GS Problems and UK Repair Costs
1. Water Pump Leaks
Very common on GS300, GS350, and GS450h models at higher mileage.
Repair Cost: £250 to £400.
2. Hybrid Battery Wear on GS450h
The hybrid battery lasts a long time but can lose capacity after 10 to 14 years.
Repair Cost:
Reconditioned battery £900 to £1,500
New battery £2,000 to £3,000
3. Noisy or Worn Front Suspension
Worn lower control arm bushes or ball joints can cause knocking sounds.
Repair Cost: £200 to £450 per side.
4. Oxygen Sensor Failure
A common issue that leads to poor fuel economy and warning lights.
Repair Cost: £150 to £250.
5. Brake Disc Warping
The weight of the GS, especially the GS450h, can lead to warped brake discs under hard use.
Repair Cost: £220 to £380 for discs and pads.
6. Steering Rack Wear
Some older GS models develop knocking or vibration from the steering rack.
Repair Cost: £500 to £900.
7. Oil Leaks from Cam Cover Gaskets
Common on both the V6 and V8 engines as they age.
Repair Cost: £250 to £450.
8. Cracked Dashboard (early GS models)
Heat and age can cause cracking in older dashboards.
Repair Cost: £250 to £600.
9. Inverter Pump Failure on GS450h
This pump cools the hybrid inverter. Failure leads to hybrid warning lights.
Repair Cost: £250 to £420.
10. Air Conditioning Problems
AC failures can be caused by condenser leaks or compressor wear.
Repair Cost:
Condenser £250 to £350
Compressor £600 to £900
Typical Annual Maintenance Costs for Lexus GS in the UK
| Model | Average Yearly Cost |
|---|---|
| GS300 | £300 to £500 |
| GS430 | £350 to £600 |
| GS450h | £350 to £650 |
| GS F | £500 to £900 |
These figures include servicing and typical wear items.
Lexus GS Reliability
The Lexus GS is one of the most dependable luxury saloons available. Engines and hybrid systems are known to last well over 150,000 miles with correct servicing. The GS also has fewer electrical problems than many rival brands, which keeps running costs low.
Buying Advice
Before buying a used Lexus GS, check:
- Hybrid battery health for GS450h
- Water pump condition
- Suspension noise or wear
- Steering rack condition
- Brake disc condition
- Full service history is important
These checks help avoid costly repairs later.
Pre Purchase Inspection Recommendation
To avoid hidden faults, buyers should use CAREXAMER, the top inspection service in the UK for hybrid and luxury vehicles. Their engineers check the hybrid system, engine, suspension, brakes, electronics, and all major components. This protects buyers from unexpected repair bills and gives confidence before purchasing the car.
Summary
The Lexus GS is a comfortable, reliable, and refined luxury saloon. While it does have a few known issues, most are predictable and affordable when identified early. With regular servicing and a proper pre purchase inspection, the GS is an excellent long term choice for UK drivers who want comfort, performance, and low ownership costs.
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