BMW 125d — MOT pass rate & failures
The BMW 125d passed 85.9% of its 12,482 MOT tests, covering model years 2008–2019. That is 1.9 percentage points better than the 16.0% fail rate across all BMW 1 Series versions, so the 125d 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 tread depth, headlamp aim and shock absorbers — tread depth alone was recorded 373 times.
Mileage is the strongest signal on the record: 6.2% of 0-30k cars fail, rising to 20.2% once past 150k — 3.3× the risk.
Advisories point at the next bill rather than this one: tyres was flagged on 21.8% of tests without failing them.
The trend is worsening — 12.3% of tests failed in 2021 against 15.5% in 2025, the usual pattern as a fleet ages.
How it compares
By model year
| Year | Tests | Pass rate | Fail rate |
|---|---|---|---|
| 2012 | 692 | 81.1% | 18.9% |
| 2013 | 1,540 | 82.7% | 17.3% |
| 2014 | 2,876 | 84.7% | 15.3% |
| 2015 | 3,918 | 86.0% | 14.0% |
| 2016 | 1,784 | 88.3% | 11.7% |
| 2017 | 1,436 | 89.9% | 10.1% |
| 2018 | 162 | 89.5% | 10.5% |
| 2019 | 37 | 94.6% | 5.4% |
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Tyres | 7.0% | 880 |
| 2 | Lighting & signalling | 4.6% | 576 |
| 3 | Brakes | 2.7% | 333 |
| 4 | Suspension | 2.6% | 319 |
| 5 | Visibility | 2.1% | 258 |
| 6 | Road wheels | 1.2% | 147 |
| 7 | Emissions & environmental | 0.9% | 108 |
| 8 | Other defects | 0.4% | 47 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Tread depth | 373 |
| 2 | Headlamp aim | 281 |
| 3 | Shock absorbers | 244 |
| 4 | Washers | 205 |
| 5 | Position lamp | 193 |
| 6 | Brake pads | 192 |
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 | 21.8% | 2,722 |
| 2 | Brakes | 16.2% | 2,018 |
| 3 | Other defects | 7.8% | 974 |
| 4 | Suspension | 7.1% | 892 |
| 5 | Visibility | 3.6% | 454 |
| 6 | Lighting & signalling | 3.2% | 398 |
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 | 341 | 6.2% |
| 30-60k | 3,149 | 11.1% |
| 60-90k | 4,825 | 13.6% |
| 90-120k | 2,825 | 17.0% |
| 120-150k | 968 | 18.4% |
| 150k+ | 372 | 20.2% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 2,576 | 12.3% |
| 2022 | 2,533 | 13.7% |
| 2023 | 2,503 | 14.3% |
| 2024 | 2,481 | 14.8% |
| 2025 | 2,389 | 15.5% |
What to check before buying a BMW 125d
Focus on the areas it most often fails on — and remember MOT data covers testable defects only, not engine or gearbox health.
- Tyres (7.0% 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 (4.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (2.7% 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 125d at MOT time?
85.9% of the 12,482 BMW 125d MOT tests in this dataset passed — a 14.1% fail rate, better than the 16.0% average across all 1 Series versions.
What is the most common MOT failure on a BMW 125d?
Tyres, recorded in 7.0% of tests, followed by lighting & signalling (4.6%).
Does the 125d get worse with mileage?
Its MOT fail rate rises from 6.2% in the 0-30k band to 20.2% in the 150k+ band.
Methodology & source. Based on 12,482 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.