1,656 tests in 2025
Lexus Sc430 reliability and MOT pass rate
80.4% passed first time. The 19.6% fail rate is 3.0 points better than the all-car average, on a median example 21 years old with 86,380 miles.
Pass rate
80.4%
22.6% of all cars failed; 19.6% of these did.
Fixed on the day
3.6%
Passed after a defect was put right during the visit.
Median at test
86,380 mi
21 years old.
Fail rate by age
| Age at test | Tests | Fail rate |
|---|---|---|
| 3-5 years | 0 | — |
| 6-9 years | 0 | — |
| 10-13 years | 0 | — |
| 14+ years | 1,656 | 19.6% |
What the Sc430 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.
- Brakes42 dangerous36.3%
- Lamps, reflectors and electrical equipment1 dangerous29.5%
- Suspension7 dangerous29.5%
- Noise, emissions and leaks24%
- Tyres85 dangerous22.5%
- Visibility14.5%
- Body, chassis, structure6 dangerous11.7%
- Steering1 dangerous3.4%
Is the Sc430 getting worse?
The fail rate rose 0.5 points to 19.5% 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 | 1,846 | 18 | 19% | 22.5% | |
| 2023 | 1,828 | 19 | 19.9% | 22.8% | |
| 2024 | 1,566 | 20 | 17.7% | 23.2% | |
| 2025 | 1,653 | 21 | 19.5% | 22.6% |
Fail rate is first attempts at class 4 tests. Median age is the age of a typical Sc430 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 Sc430 in 2025, counted by how many tests each one appeared on.
- 1Malfunction indicator lamp: inoperative or indicates a malfunction38 tests
- 2Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits36 tests
- 3Electronic stability control: warning lamp indicates a fault32 tests
- 4Ball joint: ball joint excessively worn30 tests
- 5Service brake performance: excessively binding28 tests
- 6Brake pads: less than 1.5 mm thick24 tests
- 7Condition: has ply or cords exposed23 tests
- 8Position lamp: not working23 tests
What wears out first
Advisories are the tester flagging wear that is still legal. A typical Sc430 collects 2.73 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 1.6mm159 tests
- 2Condition: has a tear, caused by separation or partial failure of its structure141 tests
- 3Exhaust system: has a major leak of exhaust gases117 tests
- 4Engine oil leaks: leaking excessively from engine105 tests
- 5Brake pads: less than 1.5 mm thick92 tests
- 6Sub-frame: corroded and seriously weakened85 tests
- 7Shock absorbers: has a serious fluid leak85 tests
- 8Ball joint: ball joint excessively worn83 tests
Questions
What is the Lexus Sc430 MOT pass rate?
80.4% of the 1,656 Lexus Sc430 first-attempt MOTs in 2025 passed. The fail rate of 19.6% compares with 22.6% across all cars. A further 3.6% passed after a defect was fixed during the test visit.
What does a Lexus Sc430 usually fail on?
The single most common failure is "Malfunction indicator lamp: inoperative or indicates a malfunction", recorded on 38 failed tests, followed by "Catalyst emissions: Lambda reading after 2nd fast idle outside specified limits" and "Electronic stability control: warning lamp indicates a fault". By section, brakes appears in 36.3% of failures, lamps, reflectors and electrical equipment appears in 29.5% of failures, suspension appears in 29.5% 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 19.6%. The median Lexus Sc430 tested in 2025 was 21 years old with 86,380 miles.
Is the Lexus Sc430 getting less reliable?
The fail rate rose 0.5 points to 19.5% 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 Sc430 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 Sc430?
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.