2005 Lexus Sc430 — MOT failures & pass rate
1,311 MOT tests on the 2005 Lexus Sc430 are in this dataset, and 83.8% of them passed. Against all cars of a similar age (27.6% fail rate), the 2005 Sc430 comes out 11.5pp better. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
No single area dominates — lighting & signalling (8.1%) and brakes (5.7%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, shock absorbers and wipers — headlamp aim alone was recorded 51 times.
Condition tracks the odometer closely. Failures run at 4.9% in the 0-30k band and 26.0% in the 150k+ band, a 21.1-point spread — more than double.
Advisories point at the next bill rather than this one: suspension was flagged on 20.8% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 8.1% | 106 |
| 2 | Brakes | 5.7% | 75 |
| 3 | Suspension | 5.3% | 70 |
| 4 | Emissions & environmental | 4.5% | 59 |
| 5 | Visibility | 3.8% | 50 |
| 6 | Tyres | 3.5% | 46 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Headlamp aim | 51 |
| 2 | Shock absorbers | 50 |
| 3 | Wipers | 40 |
| 4 | Malfunction indicator lamp | 32 |
| 5 | Catalyst emissions | 30 |
| 6 | Position lamp | 29 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 20.8% | 273 |
| 2 | Tyres | 17.2% | 226 |
| 3 | Brakes | 16.3% | 213 |
| 4 | Body, structure & corrosion | 8.6% | 113 |
| 5 | Lighting & signalling | 4.1% | 54 |
| 6 | Visibility | 2.3% | 30 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 0-30k | 61 | 4.9% |
| 30-60k | 270 | 11.8% |
| 60-90k | 417 | 15.6% |
| 90-120k | 357 | 20.2% |
| 120-150k | 79 | 8.9% |
| 150k+ | 127 | 26.0% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 282 | 17.0% |
| 2022 | 255 | 14.5% |
| 2023 | 271 | 20.3% |
| 2024 | 243 | 11.5% |
| 2025 | 260 | 16.9% |
What to check before buying a 2005 Sc430
On a 2005 Sc430, lighting & signalling is what the MOT record says goes wrong most — it appeared in 8.1% of tests. Check these areas before you commit.
- Lighting & signalling (8.1% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (5.7% of tests): Pads/discs are routine wear; binding, imbalance or corroded pipes are more serious — test for pulling under braking. Typical repair: £100–£350 per axle.
- Suspension (5.3% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
How many 2005 Lexus Sc430s pass their MOT?
83.8% of the 1,311 2005 Lexus Sc430 MOT tests in this dataset passed — a 16.2% fail rate.
What is the most common MOT failure on a 2005 Lexus Sc430?
Lighting & signalling, recorded in 8.1% of tests, followed by brakes (5.7%).
Does the 2005 Sc430 get worse with mileage?
Its MOT fail rate rises from 4.9% in the 0-30k band to 26.0% in the 150k+ band.
Methodology & source. Based on 1,311 MOT tests. Dataset: DVSA MOT testing data (2021,2022,2023,2024,2025). Data last updated 2026-07-27. Figures reflect MOT-testable defects only — read the methodology for how these are calculated and what they don't measure.