2004 Lexus RX300 MOT pass rate: 73.8% (3,513 tests)
Is the 2004 RX300 getting worse?
Pass rate of 2004-registered cars across recent test years:
| Test year | Pass rate | |
|---|---|---|
| 2023 | 75.5% +11.6 vs same-age |
|
| 2024 | 71.7% +7.6 vs same-age |
|
| 2025 | 73.8% +8.5 vs same-age |
The raw rate normally falls as cars age. The “vs same-age” figure compares this cohort with all UK cars registered in the same year, so normal ageing is not mistaken for a bad model year.
What fails on a 2004 RX300
| # | System | Defects recorded | Share |
|---|---|---|---|
| 1 | Brakes | 750 | 28.2% |
| 2 | Suspension | 670 | 25.2% |
| 3 | Lamps, reflectors and electrical equipment | 410 | 15.4% |
| 4 | Noise, emissions and leaks | 232 | 8.7% |
| 5 | Tyres | 192 | 7.2% |
| 6 | Body, chassis, structure | 157 | 5.9% |
All RX300 years compared
| Registration year | Tests | Pass rate | Vs same-age | Median mileage |
|---|---|---|---|---|
| 2003 | 1,540 | 74.7% | +9.7 pts | 121,771 |
| 2004 (this page) | 3,513 | 73.8% | +9.5 pts | 118,532 |
| 2005 | 3,212 | 73.8% | +9.3 pts | 117,500 |
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FAQs
Is a 2004 Lexus RX300 reliable?
2004-registered examples passed 73.8% of their MOT tests (3,513 tests, 2023–2025), +9.5 points versus all UK cars registered in the same year. At roughly 22 years old with a median 118,532 miles, condition now varies car by car — always check the individual MOT history.
What mileage is too high for a 2004 RX300?
The median tested example shows 118,532 miles. Anything far beyond that isn't automatically bad — a motorway-mile car with consistent service records often beats a low-mileage school-run car — but price accordingly and scrutinise the mileage trail for gaps or drops.
Source: DVSA Anonymised MOT tests and results, 2023–2025 extracts (96 million Class 4 initial tests; retests excluded). Only vehicles old enough for a routine first MOT are included. Age-adjusted figures compare the model-year cohort with all vehicles of the same registration year tested in the same calendar year. Contains public sector information licensed under OGL v3.0.