BMW 125i — MOT pass rate & failures
13,804 MOT tests on the BMW 125i (2007–2021) give an 85.8% pass rate. That is 1.7 percentage points better than the 16.0% fail rate across all BMW 1 Series versions, so the 125i is a stronger pick within the range. Failures concentrate in tyres, lighting & signalling and brakes.
What the MOT record shows
At component level the recurring items are headlamp aim, tread depth and shock absorbers — headlamp aim alone was recorded 427 times.
Condition tracks the odometer closely. Failures run at 6.8% in the 0-30k band and 17.9% in the 150k+ band, a 11.1-point spread — more than double.
Tyres is the most common advisory, noted on 21.6% of tests — work that passed today but is likely due soon.
How it compares
By model year
| Year | Tests | Pass rate | Fail rate |
|---|---|---|---|
| 2008 | 3,342 | 82.9% | 17.1% |
| 2009 | 1,952 | 83.2% | 16.8% |
| 2010 | 1,581 | 84.4% | 15.6% |
| 2011 | 877 | 87.3% | 12.7% |
| 2012 | 568 | 87.5% | 12.5% |
| 2013 | 1,011 | 84.8% | 15.2% |
| 2014 | 1,070 | 85.5% | 14.5% |
| 2015 | 1,245 | 88.6% | 11.4% |
| 2016 | 1,002 | 91.2% | 8.8% |
| 2017 | 834 | 91.3% | 8.8% |
| 2018 | 248 | 93.5% | 6.5% |
| 2019 | 58 | 89.7% | 10.3% |
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 6.1% | 841 |
| 2 | Lighting & signalling | 5.7% | 781 |
| 3 | Brakes | 3.7% | 512 |
| 4 | Suspension | 3.3% | 461 |
| 5 | Visibility | 2.9% | 395 |
| 6 | Emissions & environmental | 1.0% | 139 |
| 7 | Road wheels | 0.7% | 101 |
| 8 | Seat belts & restraints | 0.4% | 57 |
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 | 427 |
| 2 | Tread depth | 291 |
| 3 | Shock absorbers | 289 |
| 4 | Washers | 288 |
| 5 | Individual direction indicators | 205 |
| 6 | Brake pads | 175 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Tyres | 21.6% | 2,984 |
| 2 | Brakes | 19.6% | 2,704 |
| 3 | Suspension | 11.9% | 1,639 |
| 4 | Other defects | 6.5% | 896 |
| 5 | Emissions & environmental | 6.0% | 835 |
| 6 | Lighting & signalling | 5.4% | 743 |
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 | 1,169 | 6.8% |
| 30-60k | 4,250 | 10.8% |
| 60-90k | 4,727 | 15.3% |
| 90-120k | 2,662 | 19.1% |
| 120-150k | 778 | 20.1% |
| 150k+ | 218 | 17.9% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 2,853 | 13.9% |
| 2022 | 2,822 | 13.6% |
| 2023 | 2,777 | 14.8% |
| 2024 | 2,707 | 14.4% |
| 2025 | 2,645 | 14.6% |
What to check before buying a BMW 125i
Focus on the areas it most often fails on — and remember MOT data covers testable defects only, not engine or gearbox health.
- Tyres (6.1% of tests): Usually a quick, known-cost fix, but check tread, age and uneven wear (which can hint at alignment or suspension issues). Typical repair: £50–£120 per tyre.
- Lighting & signalling (5.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (3.7% 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 reliable is the BMW 125i at MOT time?
85.8% of the 13,804 BMW 125i MOT tests in this dataset passed — a 14.2% fail rate, better than the 16.0% average across all 1 Series versions.
What is the most common MOT failure on a BMW 125i?
Tyres, recorded in 6.1% of tests, followed by lighting & signalling (5.7%).
Does the 125i get worse with mileage?
Its MOT fail rate rises from 6.8% in the 0-30k band to 17.9% in the 150k+ band.
Methodology & source. Based on 13,804 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.