2018 BMW M3 MOT pass rate: 90.9% (2,440 tests)
Is the 2018 M3 getting worse?
Pass rate of 2018-registered cars across recent test years:
| Test year | Pass rate | |
|---|---|---|
| 2023 | 91.2% +3.1 vs same-age |
|
| 2024 | 92.3% +6.1 vs same-age |
|
| 2025 | 89.3% +4.6 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 M3
| # | System | Defects recorded | Share |
|---|---|---|---|
| 1 | Tyres | 231 | 60.5% |
| 2 | Suspension | 69 | 18.1% |
| 3 | Identification of the vehicle | 25 | 6.5% |
| 4 | Noise, emissions and leaks | 14 | 3.7% |
| 5 | Visibility | 11 | 2.9% |
| 6 | Brakes | 11 | 2.9% |
All M3 years compared
| Registration year | Tests | Pass rate | Vs same-age | Median mileage |
|---|---|---|---|---|
| 2002 | 3,534 | 85.3% | +19.5 pts | 103,763 |
| 2003 | 5,616 | 86.3% | +21.2 pts | 99,459 |
| 2004 | 4,055 | 86.9% | +22.5 pts | 95,265 |
| 2005 | 2,899 | 86.8% | +22.2 pts | 90,149 |
| 2008 | 3,212 | 89.1% | +24.0 pts | 82,852 |
| 2009 | 2,054 | 89.5% | +23.1 pts | 77,422 |
| 2010 | 1,862 | 89.9% | +22.6 pts | 71,990 |
| 2011 | 1,982 | 90.2% | +21.1 pts | 66,849 |
| 2012 | 1,728 | 90.3% | +19.1 pts | 58,436 |
| 2015 | 1,607 | 90.4% | +11.6 pts | 55,654 |
| 2016 | 2,225 | 90.4% | +9.0 pts | 48,097 |
| 2017 | 2,857 | 89.7% | +5.6 pts | 41,417 |
| 2018 (this page) | 2,440 | 90.9% | +4.5 pts | 35,710 |
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FAQs
Is a 2018 BMW M3 reliable?
2018-registered examples passed 90.9% of their MOT tests (2,440 tests, 2023–2025), +4.5 points versus all UK cars registered in the same year. At roughly 8 years old with a median 35,710 miles, condition now varies car by car — always check the individual MOT history.
What mileage is too high for a 2018 M3?
The median tested example shows 35,710 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.