1,031 tests in 2025
Lexus Gs450h reliability and MOT pass rate
82.5% passed first time. The 17.5% fail rate is 5.1 points better than the all-car average, on a median example 17 years old with 115,587 miles.
Pass rate
82.5%
22.6% of all cars failed; 17.5% of these did.
Fixed on the day
6%
Passed after a defect was put right during the visit.
Median at test
115,587 mi
17 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 1 | — |
| 6-9 years | 1 | — |
| 10-13 years | 28 | — |
| 14+ years | 1,001 | 17.9% |
What the Gs450h 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.
- Brakes35 dangerous35.6%
- Lamps, reflectors and electrical equipment35%
- Tyres57 dangerous29.4%
- Suspension7 dangerous27.2%
- Body, chassis, structure4 dangerous12.8%
- Noise, emissions and leaks12.2%
- Visibility10%
- Identification of the vehicle3.9%
Is the Gs450h getting worse?
The fail rate fell 1.2 points to 17.4% from 2022 to 2025 while the median one tested aged 2 years, which is about what ageing alone predicts (1.7 points). Read it as the fleet getting older rather than the model changing.
| Year | Tests | Median age | Fail rate | All cars | |
|---|---|---|---|---|---|
| 2022 | 1,406 | 15 | 18.6% | 22.5% | |
| 2023 | 1,353 | 16 | 17.8% | 22.8% | |
| 2024 | 1,128 | 16 | 18.7% | 23.2% | |
| 2025 | 1,023 | 17 | 17.4% | 22.6% |
Fail rate is first attempts at class 4 tests. Median age is the age of a typical Gs450h 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 Gs450h in 2025, counted by how many tests each one appeared on.
- 1Position lamp: not working34 tests
- 2Shock absorbers: has a serious fluid leak28 tests
- 3Malfunction indicator lamp: inoperative or indicates a malfunction21 tests
- 4Tread depth: tread depth below requirements of 1.6mm19 tests
- 5Brake pads: less than 1.5 mm thick16 tests
- 6Condition: has a cut in excess of the requirements deep enough to reach the ply or cords13 tests
- 7Exhaust system: has a major leak of exhaust gases13 tests
- 8Condition: has ply or cords exposed11 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical Gs450h collects 2.71 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 1.6mm142 tests
- 2Shock absorbers: has a serious fluid leak122 tests
- 3Brake discs: in such a condition that it is seriously weakened102 tests
- 4Exhaust system: has a major leak of exhaust gases68 tests
- 5Pins and bushes: pin or bush excessively worn64 tests
- 6Brake pads: less than 1.5 mm thick61 tests
- 7Rigid brake pipes: excessively corroded54 tests
- 8Sub-frame: corroded and seriously weakened52 tests
Questions
What is the Lexus Gs450h MOT pass rate?
82.5% of the 1,031 Lexus Gs450h first-attempt MOTs in 2025 passed. The fail rate of 17.5% compares with 22.6% across all cars. A further 6% passed after a defect was fixed during the test visit.
What does a Lexus Gs450h usually fail on?
The single most common failure is "Position lamp: not working", recorded on 34 failed tests, followed by "Shock absorbers: has a serious fluid leak" and "Malfunction indicator lamp: inoperative or indicates a malfunction". By section, brakes appears in 35.6% of failures, lamps, reflectors and electrical equipment appears in 35% of failures, tyres appears in 29.4% of failures.
Does age change the odds?
Sharply. At 3 to 5 years old the fail rate was 0%; at 14+ years it was 17.9%. The median Lexus Gs450h tested in 2025 was 17 years old with 115,587 miles.
Is the Lexus Gs450h getting less reliable?
The fail rate fell 1.2 points to 17.4% from 2022 to 2025 while the median one tested aged 2 years, which is about what ageing alone predicts (1.7 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 Gs450h 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 Gs450h?
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.