2018 BMW X4 MOT pass rate: 88.9% (6,038 tests)
Is the 2018 X4 getting worse?
Pass rate of 2018-registered cars across recent test years:
| Test year | Pass rate | |
|---|---|---|
| 2023 | 89.8% +1.8 vs same-age |
|
| 2024 | 89.4% +3.2 vs same-age |
|
| 2025 | 87.5% +2.8 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 2018 X4
| # | System | Defects recorded | Share |
|---|---|---|---|
| 1 | Tyres | 462 | 41.5% |
| 2 | Brakes | 188 | 16.9% |
| 3 | Visibility | 180 | 16.2% |
| 4 | Lamps, reflectors and electrical equipment | 102 | 9.2% |
| 5 | Suspension | 56 | 5.0% |
| 6 | Noise, emissions and leaks | 37 | 3.3% |
All X4 years compared
| Registration year | Tests | Pass rate | Vs same-age | Median mileage |
|---|---|---|---|---|
| 2014 | 2,210 | 82.9% | +7.0 pts | 83,999 |
| 2015 | 6,171 | 82.3% | +3.6 pts | 79,179 |
| 2016 | 8,049 | 83.6% | +2.3 pts | 69,804 |
| 2017 | 6,346 | 85.4% | +1.4 pts | 59,762 |
| 2018 (this page) | 6,038 | 88.9% | +2.6 pts | 52,456 |
| 2019 | 10,727 | 90.1% | +1.7 pts | 41,613 |
| 2020 | 3,719 | 90.3% | +0.4 pts | 32,738 |
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FAQs
Is a 2018 BMW X4 reliable?
2018-registered examples passed 88.9% of their MOT tests (6,038 tests, 2023–2025), +2.6 points versus all UK cars registered in the same year. At roughly 8 years old with a median 52,456 miles, condition now varies car by car — always check the individual MOT history.
What mileage is too high for a 2018 X4?
The median tested example shows 52,456 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.