2006 Lexus Rx400 H — MOT failures & pass rate
Across 696 MOT tests, the 2006 Lexus Rx400 H recorded an 80.8% pass rate. That is 8.1 percentage points better than all cars of a similar age, which fail at 27.3%. Failures cluster in lighting & signalling, suspension and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (11.2%) and suspension (9.2%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are position lamp, pins and bushes and tread depth — position lamp alone was recorded 47 times.
A 150k+ example is materially riskier than a 60-90k one: 21.2% versus 10.6%.
Suspension is the most common advisory, noted on 40.4% of tests — work that passed today but is likely due soon.
The trend is worsening — 19.0% of tests failed in 2021 against 23.1% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 11.2% | 78 |
| 2 | Suspension | 9.2% | 64 |
| 3 | Brakes | 6.9% | 48 |
| 4 | Tyres | 4.3% | 30 |
| 5 | Body, structure & corrosion | 3.2% | 22 |
| 6 | Visibility | 3.0% | 21 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Position lamp | 47 |
| 2 | Pins and bushes | 45 |
| 3 | Tread depth | 22 |
| 4 | Headlamp | 20 |
| 5 | Brake discs | 20 |
| 6 | Rbt (sp) | 18 |
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 | 40.4% | 281 |
| 2 | Tyres | 25.0% | 174 |
| 3 | Brakes | 21.1% | 147 |
| 4 | Other defects | 14.1% | 98 |
| 5 | Body, structure & corrosion | 12.6% | 88 |
| 6 | Lighting & signalling | 11.2% | 78 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 60-90k | 47 | 10.6% |
| 90-120k | 140 | 20.7% |
| 120-150k | 209 | 17.7% |
| 150k+ | 293 | 21.2% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Hybrid | 570 | 18.8% |
| Electric | 54 | 16.7% |
| Petrol | 46 | 26.1% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 163 | 19.0% |
| 2022 | 154 | 19.5% |
| 2023 | 139 | 17.3% |
| 2024 | 123 | 17.9% |
| 2025 | 117 | 23.1% |
What to check before buying a 2006 Rx400 H
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 11.2% of tests. Start there.
- Lighting & signalling (11.2% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (9.2% 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.
- Brakes (6.9% 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.
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 2006 Lexus Rx400 Hs pass their MOT?
80.8% of the 696 2006 Lexus Rx400 H MOT tests in this dataset passed — a 19.3% fail rate.
What is the most common MOT failure on a 2006 Lexus Rx400 H?
Lighting & signalling, recorded in 11.2% of tests, followed by suspension (9.2%).
Does the 2006 Rx400 H get worse with mileage?
Its MOT fail rate rises from 10.6% in the 60-90k band to 21.2% in the 150k+ band.
Methodology & source. Based on 696 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.