Lexus GS300 MOT pass rate: 77.6% (2,275 tests, 2025)

The Lexus GS300 passed 77.6% of its 2,275 MOT tests in 2025 — right on the UK average of 77.5%. The median tested example was 20 years old with 112,987 miles on the clock.

77.6%Pass rate (2025)

2,275MOT tests analysed

112,987 miMedian mileage at test

20 yrsMedian age at test

How the GS300 compares

Lexus GS300

77.6%

UK average (all Class 4 vehicles)

77.5% across 33.1 million tests

Lexus average (all models)

88.0%

What fails most on the Lexus GS300

Across failed and rectified tests in 2025, these vehicle systems produced the most defects on the GS300:

#	System	Defects recorded	Share
1	Brakes	388	25.8%
2	Lamps, reflectors and electrical equipment	349	23.3%
3	Suspension	257	17.1%
4	Noise, emissions and leaks	185	12.3%
5	Tyres	160	10.7%
6	Body, chassis, structure	91	6.1%

Pre-MOT checklist for GS300 owners

Based on the failure profile above, ten minutes with a torch before your test removes the most likely fail items:

Feel for a spongy pedal or pulling to one side; check pad wear through the wheel spokes if visible
Walk round with all lights on: one blown bulb is the most avoidable fail there is
Bounce each corner and listen for clonks over speed bumps — suspension is this model’s (and the UK’s) top failure system
A blowing exhaust or visible smoke will fail; warm the engine fully before the test
Check tread with the 20p test and inspect sidewalls for cracking — tyres close to the limit are the country’s most common advisory

Check the engine before the tester does

A stored fault code with the engine light on is an automatic Major defect. Scan and clear resolved faults before booking.

Topdon OBD2 scannersTopdon diagnostic scanners with full-system readouts
XTOOL diagnostic toolsXTOOL code readers for petrol and diesel cars
Autel UK testersAutel professional-grade diagnostic testers

GS300 pass rate by registration year

Registration year	Tests	Pass rate	Vs same-age	Median mileage
2005	2,075	76.3%	+11.8 pts	110,048

Check a specific GS300 before you buy

Pass rates describe the model; they can’t tell you about the one car you’re looking at. Run its plate through our free MOT history check to see its personal record of failures, advisories and mileage readings.

Other Lexus models

CT87.9% pass rate · 30,360 tests NX92.7% pass rate · 28,217 tests RX93.9% pass rate · 16,281 tests UX96.1% pass rate · 14,352 tests Is90.0% pass rate · 12,847 tests IS25079.7% pass rate · 9,043 tests RX450H81.1% pass rate · 6,815 tests RX400H76.7% pass rate · 6,749 tests

FAQs

What is the MOT pass rate for a Lexus GS300?

In 2025, 77.6% of 2,275 first MOT tests on the Lexus GS300 were passes (UK average: 77.5%). Data: DVSA anonymised MOT results.

What does the GS300 fail its MOT on most?

The biggest defect group is brakes (25.8% of its recorded defects), followed by lamps, reflectors and electrical equipment.

Is the Lexus GS300 reliable?

MOT pass rate is one lens on durability: at 77.6% it performs above the national average at a median age of 20 years and 112,987 miles. Always check the individual car's history too.

Source: DVSA Anonymised MOT tests and results, 2025 extract (Class 4 initial tests only; retests excluded). Contains public sector information licensed under the Open Government Licence v3.0. Figures rounded to one decimal place.