2,164 tests in 2025
Lexus Gs300 reliability and MOT pass rate
77.7% passed first time. The 22.3% fail rate is 0.3 points better than the all-car average, on a median example 20 years old with 113,643 miles.
Pass rate
77.7%
22.6% of all cars failed; 22.3% of these did.
Fixed on the day
6.2%
Passed after a defect was put right during the visit.
Median at test
113,643 mi
20 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 0 | — |
| 6-9 years | 5 | — |
| 10-13 years | 5 | — |
| 14+ years | 2,154 | 22.4% |
What the Gs300 fails on
Share of failed tests with at least one fail item in each DVSA inspection section. A test can fail in several sections at once.
- Brakes100 dangerous47.3%
- Lamps, reflectors and electrical equipment38%
- Suspension14 dangerous34.4%
- Noise, emissions and leaks1 dangerous26.6%
- Tyres131 dangerous20.5%
- Body, chassis, structure7 dangerous14.1%
- Visibility11%
- Seat belts and supplementary restraint systems3.7%
Is the Gs300 getting worse?
The fail rate rose 0.7 points to 22.3% from 2022 to 2025 while the median one tested aged 3 years, which is about what ageing alone predicts (-0.2 points). Read it as the fleet getting older rather than the model changing.
| Year | Tests | Median age | Fail rate | All cars | |
|---|---|---|---|---|---|
| 2022 | 3,223 | 17 | 21.6% | 22.5% | |
| 2023 | 2,934 | 18 | 22.5% | 22.8% | |
| 2024 | 2,336 | 19 | 22.2% | 23.2% | |
| 2025 | 2,146 | 20 | 22.3% | 22.6% |
Fail rate is first attempts at class 4 tests. Median age is the age of a typical Gs300 at its test that year, and it is the number to watch: across the whole fleet each extra year of age adds roughly 1.9 points to the fail rate, so a model whose age and fail rate rise together is simply getting older.
The exact defects that fail it
Every failure item DVSA recorded against a Gs300 in 2025, counted by how many tests each one appeared on.
- 1Malfunction indicator lamp: inoperative or indicates a malfunction68 tests
- 2Electronic stability control: warning lamp indicates a fault60 tests
- 3Position lamp: not working59 tests
- 4Shock absorbers: has a serious fluid leak51 tests
- 5Brake pads: less than 1.5 mm thick50 tests
- 6Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits38 tests
- 7Exhaust system: has a major leak of exhaust gases38 tests
- 8Headlamp: not working on dipped beam38 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical Gs300 collects 3.15 of them per test, and these are the ones that come up most. Treat it as the running-repairs list for the next year or two.
- 1Tread depth: tread depth below requirements of 1.6mm323 tests
- 2Shock absorbers: has a serious fluid leak223 tests
- 3Exhaust system: has a major leak of exhaust gases213 tests
- 4Pins and bushes: pin or bush excessively worn198 tests
- 5Brake pads: less than 1.5 mm thick191 tests
- 6Brake discs: in such a condition that it is seriously weakened191 tests
- 7Engine oil leaks: leaking excessively from engine188 tests
- 8Condition: has a tear, caused by separation or partial failure of its structure185 tests
Questions
What is the Lexus Gs300 MOT pass rate?
77.7% of the 2,164 Lexus Gs300 first-attempt MOTs in 2025 passed. The fail rate of 22.3% compares with 22.6% across all cars. A further 6.2% passed after a defect was fixed during the test visit.
What does a Lexus Gs300 usually fail on?
The single most common failure is "Malfunction indicator lamp: inoperative or indicates a malfunction", recorded on 68 failed tests, followed by "Electronic stability control: warning lamp indicates a fault" and "Position lamp: not working". By section, brakes appears in 47.3% of failures, lamps, reflectors and electrical equipment appears in 38% of failures, suspension appears in 34.4% of failures.
Does age change the odds?
Sharply. At 3 to 5 years old the fail rate was n/a%; at 14+ years it was 22.4%. The median Lexus Gs300 tested in 2025 was 20 years old with 113,643 miles.
Is the Lexus Gs300 getting less reliable?
The fail rate rose 0.7 points to 22.3% from 2022 to 2025 while the median one tested aged 3 years, which is about what ageing alone predicts (-0.2 points). Read it as the fleet getting older rather than the model changing.
First-attempt class 4 tests, 2025, from DVSA’s anonymised MOT data (OGL v3, retrieved 2026-09-12). DVSA records newer cars trim by trim; this page adds every Gs300 trim together. Year-on-year figures come from the same DVSA extracts for 2026 and earlier years. Full method on the pass rates hub.
Other Lexus models
Checking a particular Gs300?
The odds above are the model. The car in front of you has its own record: every test, every advisory, the mileage at each one.
Due a test? Find an approved MOT station near you.