Lexus Ls430 MOT pass rate & common failures
Across 20 model years and 6,729 tests, the Lexus Ls430 passes its MOT 84.3% of the time. All cars of a similar age fail 27.4% of the time, so this is 11.8pp better than the group it competes with. Its most common failure areas are lighting & signalling, brakes and emissions & environmental.
What the MOT record shows
No single area dominates — lighting & signalling (8.6%) and brakes (6.5%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, position lamp and malfunction indicator lamp — headlamp aim alone was recorded 279 times.
Condition tracks the odometer closely. Failures run at 0.0% in the 0-30k band and 19.5% in the 150k+ band, a 19.5-point spread — more than double.
Advisories point at the next bill rather than this one: suspension was flagged on 25.4% of tests without failing them.
The trend is worsening — 15.7% of tests failed in 2021 against 17.3% in 2025, the usual pattern as a fleet ages.
How it compares
By model year
Every Ls430 model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 2000 | 220 | 84.5% | 15.4% | Lighting & signalling |
| 2001 | 1,095 | 84.6% | 15.4% | Lighting & signalling |
| 2002 | 965 | 84.2% | 15.8% | Lighting & signalling |
| 2003 | 1,013 | 83.8% | 16.2% | Lighting & signalling |
| 2004 | 1,477 | 83.5% | 16.4% | Brakes |
| 2005 | 1,513 | 84.3% | 15.7% | Lighting & signalling |
| 2006 | 424 | 87.7% | 12.3% | Lighting & signalling |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 8.6% | 580 |
| 2 | Brakes | 6.5% | 435 |
| 3 | Emissions & environmental | 5.2% | 351 |
| 4 | Suspension | 3.9% | 261 |
| 5 | Tyres | 3.8% | 254 |
| 6 | Body, structure & corrosion | 2.8% | 187 |
| 7 | Visibility | 2.5% | 170 |
| 8 | Steering | 1.1% | 76 |
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 | 279 |
| 2 | Position lamp | 274 |
| 3 | Malfunction indicator lamp | 221 |
| 4 | Rbt (sp) | 171 |
| 5 | Brake pads | 142 |
| 6 | Headlamp | 136 |
| 7 | Catalyst emissions | 130 |
| 8 | Wipers | 126 |
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 | 25.4% | 1,708 |
| 2 | Tyres | 20.6% | 1,386 |
| 3 | Brakes | 17.8% | 1,195 |
| 4 | Body, structure & corrosion | 11.4% | 766 |
| 5 | Lighting & signalling | 10.3% | 696 |
| 6 | Emissions & environmental | 9.7% | 650 |
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 | 32 | 0.0% |
| 30-60k | 349 | 9.2% |
| 60-90k | 1,068 | 12.7% |
| 90-120k | 1,694 | 13.9% |
| 120-150k | 1,621 | 16.6% |
| 150k+ | 1,962 | 19.5% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 1,627 | 15.7% |
| 2022 | 1,426 | 15.6% |
| 2023 | 1,324 | 14.6% |
| 2024 | 1,197 | 15.2% |
| 2025 | 1,155 | 17.3% |
What to check before buying a Lexus Ls430
- Lighting & signalling (8.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (6.5% 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.
- Emissions & environmental (5.2% of tests): More common on older diesels (DPF/EGR) — can be expensive; check for warning lights and smoke. Typical repair: £100–£600.
Repair costs are rough UK ballpark ranges to set expectations, not quotes — actual prices vary widely by car, parts and garage.
Frequently asked questions
What is the MOT pass rate for the Lexus Ls430?
84.3% of the 6,729 Lexus Ls430 MOT tests in this dataset passed, a 15.7% fail rate, across model years 2000–2019.
What does the Lexus Ls430 most often fail its MOT on?
Lighting & signalling, recorded in 8.6% of tests, then brakes (6.5%).
How much does mileage affect Ls430 MOT results?
Fail rates run at 0.0% for cars in the 0-30k band and 19.5% for 150k+, a 19.5-point difference.
Methodology & source. Based on 6,729 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.