Bulletproof Japanese luxury at bargain-basement prices
The Lexus GS300 brought Japanese reliability and refinement to the executive saloon class, competing with the BMW 5 Series and Mercedes E-Class. Steep depreciation has made it one of the best-value used luxury cruisers available, with the legendary Toyota 2JZ straight-six engine capable of vast mileages — though it trades driving excitement for waftability and comfort.
We track 5 known issues across the Lexus Gs300 range, including 1 rated as safety-critical. Knowing which variants and configurations to approach with caution can save you from expensive surprises after purchase.
Found a Lexus Gs300? Enter the reg to see which of our 5 known issues apply to that exact car, plus full MOT history and mileage checks.
S147 (1993–2005) — Engine options included the 3.0 V6. Our database flags 4 known issues on this generation, 1 of which are rated as safety-critical. The most significant concern is Subframe mounting point corrosion (£800–£1,500 to address).
S190 (2005–2012) — Engine options included the 3.0 V6. Our database flags 5 known issues on this generation, 1 of which are rated as safety-critical. The most significant concern is Subframe mounting point corrosion (£800–£1,500 to address).
The rear subframe mounting points on both S147 and S190 generations suffer from corrosion that weakens the load-bearing structure. This affects the areas where the subframe bolts to the main body shell. The problem is progressive and becomes more severe with age and exposure to road salt.
Complete subframe detachment can occur without warning, causing total loss of vehicle control and potentially fatal accidents. Structural welding repairs typically cost £800-£2,000 but may not be economically viable on high-mileage examples. The car is unsafe to drive if significant corrosion is present.
Inspect the wheel arches, sills, jacking points and door bottoms carefully. Press gently on sills to check for soft spots. Look underneath for corrosion on structural components. Check the MOT history for corrosion-related advisories or failures.
Suspension arms, links and brackets on the GS300 are prone to corrosion that can weaken the components structurally. MOT data shows this model fails at 5.8x the national fleet average for suspension component corrosion, with failures starting from 40,000 miles. The problem affects both front and rear suspension components and is accelerated by road salt exposure.
Corroded suspension components can fracture suddenly, causing loss of vehicle control, wheel detachment, or suspension collapse. Replacement typically involves multiple components due to the interconnected nature of suspension systems. The car should not be driven if severe corrosion is evident.
Listen for knocking, clunking or rattling over bumps during the test drive. Inspect the underside for corroded or cracked suspension components. Check the MOT history for suspension-related advisories, which often predict future failures.
The rubber bushes in the suspension arms and anti-roll bar links deteriorate prematurely on the GS300. MOT data shows this model fails at 9.5x the national fleet average for suspension bush wear, making it one of the most common MOT failure points. The problem affects both front and rear suspension and is compounded by the car's weight and age.
Worn bushes cause poor handling, increased tyre wear, and excessive road noise. While not immediately dangerous, severely worn bushes can lead to suspension component misalignment and accelerated wear of other parts. MOT failure is certain once wear becomes excessive.
Listen for knocking, clunking or rattling over bumps during the test drive. Inspect the underside for corroded or cracked suspension components. Check the MOT history for suspension-related advisories, which often predict future failures.
The Electronic Stability Control system on S190 generation GS300s develops faults that trigger the malfunction indicator lamp. MOT data shows this model fails at 13.7x the national fleet average for ESC system malfunctions, typically appearing after 80,000 miles. The most common causes are wheel speed sensor failures, ABS pump issues, or yaw rate sensor problems.
ESC system failure removes a critical safety system that helps prevent skidding and loss of control. While the car remains drivable, safety in emergency situations is compromised. Diagnosis requires specialist equipment and repair costs vary significantly depending on which component has failed.
Check all electrical functions systematically: windows, mirrors, lights, infotainment, heated seats, air conditioning. Look for any warning lights on the dashboard. A diagnostic scan before purchase can reveal stored fault codes.
The lambda (oxygen) sensors deteriorate with age and mileage, causing the engine management system to run rich or lean mixture. The V6 engine uses multiple sensors which increases the likelihood of failure.
Failed lambda sensors cause MOT emission test failure, increased fuel consumption, and potential damage to the catalytic converter if left unrepaired. The engine will run but performance and economy will be compromised. Replacement is straightforward but multiple sensors may need changing.
Check all electrical functions systematically: windows, mirrors, lights, infotainment, heated seats, air conditioning. Look for any warning lights on the dashboard. A diagnostic scan before purchase can reveal stored fault codes.
For the full breakdown of all 5 tracked issues with repair costs, see the Lexus Gs300 common problems page.
Based on 18k real DVSA MOT tests, the Lexus Gs300 fails more often than average on several items. The biggest outlier is front or rear fog lamp emitted colour, position... at 28x the fleet average, followed by headlight fault (17x).
When viewing a specific car, check its MOT history for recurring advisories in these categories. See the full Lexus Gs300 MOT failure breakdown for data at every mileage point.
Routine servicing (oil and filter change every 10k miles) typically costs £80–£120 at an independent garage.
See the full Lexus Gs300 service schedule for every interval and cost breakdown.
The Lexus Gs300 has some well-documented weak points, including 1 safety-critical issue that demand careful checking. The right example, properly maintained, can still be a sound purchase — but cutting corners on the pre-purchase inspection is not advisable. 1999-2004 Mk2 (S160) for the best balance of the proven 2JZ engine and more modern features; avoid 2006 Mk3
Before committing, check the car's full MOT history, verify the service record is complete, and if possible arrange a specialist inspection. Enter any registration into our free report to see the complete picture.
Get Car Wise maintains a database of known mechanical issues for every popular car on UK roads, tracking the faults that owners, specialists and DVSA data reveal.
When you run a report on a specific Lexus Gs300, we cross-reference the exact variant, engine and age against our database of 5 known issues. Combined with full MOT history analysis, mileage verification and DVLA data, you get a complete picture before viewing.
Enter the registration for MOT history, mileage verification, known faults for that exact variant, and a Get Car Wise Score.
This guide was compiled from independent expert reviews, DVSA MOT data, specialist workshops and our own database of 5 known Lexus Gs300 issues. We are not affiliated with any source listed.