BMW 1 Series MOT pass rate & common failures
2,288,981 MOT tests on the BMW 1 Series (1981–2025) give it an 84.0% pass rate. Small family cars of a similar age fail 18.1% of the time, so this is 2.1pp better than the group it competes with. Its most common failure areas are lighting & signalling, tyres and brakes.
Best and worst 1 Series years
Ranked across 1 Series years with at least 1,000 tests. Older cars fail more simply because they are older — compare years close together in age before drawing conclusions.
What the MOT record shows
The strongest year on this record is 2023 (96.3% pass rate); the weakest is 2004 (75.0%). Older cars carry more of the difference than the average implies.
No single area dominates — lighting & signalling (7.6%) and tyres (6.3%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are headlamp aim, tread depth and washers — headlamp aim alone was recorded 89,224 times.
A 150k+ example is materially riskier than a 0-30k one: 24.4% versus 6.8%.
Split by fuel, diesel examples fail 4.4pp more often than petrol ones (17.8% vs 13.5%) — worth weighing if you have a choice.
Advisories point at the next bill rather than this one: tyres was flagged on 25.3% of tests without failing them.
How it compares
Versions & engines
MOT records broken out by the engine designations buyers actually search for.
By model year
Every 1 Series model year with a usable sample. Years with their own detailed report are linked.
| Year | Tests | Pass rate | Fail rate | Most common failure |
|---|---|---|---|---|
| 2001 | 32 | 78.1% | 21.9% | Suspension |
| 2002 | 41 | 80.5% | 19.5% | Lighting & signalling |
| 2004 | 13,176 | 75.0% | 24.9% | Lighting & signalling |
| 2005 | 48,562 | 76.0% | 24.0% | Lighting & signalling |
| 2006 | 64,163 | 77.1% | 22.9% | Lighting & signalling |
| 2007 | 72,549 | 77.9% | 22.1% | Lighting & signalling |
| 2008 | 107,097 | 78.1% | 21.9% | Lighting & signalling |
| 2009 | 130,176 | 78.4% | 21.6% | Lighting & signalling |
| 2010 | 149,162 | 79.1% | 20.9% | Lighting & signalling |
| 2011 | 141,239 | 80.4% | 19.6% | Lighting & signalling |
| 2012 | 181,168 | 80.3% | 19.7% | Lighting & signalling |
| 2013 | 221,851 | 82.8% | 17.2% | Lighting & signalling |
| 2014 | 182,189 | 84.5% | 15.5% | Lighting & signalling |
| 2015 | 183,970 | 86.3% | 13.7% | Tyres |
| 2016 | 183,208 | 87.6% | 12.4% | Tyres |
| 2017 | 186,212 | 89.2% | 10.8% | Tyres |
| 2018 | 152,422 | 89.8% | 10.2% | Tyres |
| 2019 | 128,289 | 90.3% | 9.8% | Tyres |
| 2020 | 82,489 | 91.3% | 8.7% | Tyres |
| 2021 | 43,176 | 92.5% | 7.5% | Tyres |
| 2022 | 16,326 | 93.1% | 6.9% | Tyres |
| 2023 | 1,336 | 96.3% | 3.7% | Tyres |
| 2024 | 45 | 97.8% | 2.2% | Visibility |
Most common failures (all years)
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 7.6% | 173,352 |
| 2 | Tyres | 6.3% | 145,412 |
| 3 | Brakes | 4.5% | 101,778 |
| 4 | Suspension | 4.1% | 93,227 |
| 5 | Visibility | 3.5% | 79,886 |
| 6 | Emissions & environmental | 1.8% | 40,441 |
| 7 | Body, structure & corrosion | 0.9% | 21,328 |
| 8 | Road wheels | 0.8% | 18,395 |
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 | 89,224 |
| 2 | Tread depth | 87,612 |
| 3 | Washers | 58,753 |
| 4 | Shock absorbers | 58,378 |
| 5 | Brake pads | 52,286 |
| 6 | Position lamp | 49,715 |
| 7 | Headlamp | 39,628 |
| 8 | Wipers | 24,923 |
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 | 25.3% | 578,934 |
| 2 | Brakes | 21.5% | 492,379 |
| 3 | Suspension | 12.1% | 277,560 |
| 4 | Other defects | 8.9% | 204,434 |
| 5 | Emissions & environmental | 4.9% | 111,853 |
| 6 | Visibility | 4.4% | 100,265 |
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 | 266,654 | 6.8% |
| 30-60k | 594,523 | 11.3% |
| 60-90k | 598,193 | 16.4% |
| 90-120k | 450,498 | 20.6% |
| 120-150k | 245,207 | 23.1% |
| 150k+ | 133,469 | 24.4% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 1,321,851 | 17.8% |
| Petrol | 967,068 | 13.5% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 437,208 | 15.6% |
| 2022 | 455,948 | 15.8% |
| 2023 | 468,507 | 16.1% |
| 2024 | 466,472 | 16.3% |
| 2025 | 460,846 | 16.1% |
What to check before buying a BMW 1 Series
- Lighting & signalling (7.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Tyres (6.3% 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.
- Brakes (4.5% 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
What is the MOT pass rate for the BMW 1 Series?
84.0% of the 2,288,981 BMW 1 Series MOT tests in this dataset passed, a 16.0% fail rate, across model years 1981–2025.
What does the BMW 1 Series most often fail its MOT on?
Lighting & signalling, recorded in 7.6% of tests, then tyres (6.3%).
Which 1 Series years are best and worst for MOT results?
2023 has the best pass rate at 96.3% and 2004 the weakest at 75.0%, from 1,336 and 13,176 tests respectively.
How much does mileage affect 1 Series MOT results?
Fail rates run at 6.8% for cars in the 0-30k band and 24.4% for 150k+, a 17.6-point difference.
Is the petrol or diesel 1 Series more reliable at MOT time?
On MOT-testable defects the petrol fails 13.5% of the time against 17.8% for the diesel. This covers testable items only, not engine or gearbox reliability.
Methodology & source. Based on 2,288,981 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.