2011 BMW 3 Series — MOT failures & pass rate
The 2011 BMW 3 Series passed 80.0% of its 181,620 recorded MOT tests. Executive cars of a similar age fail at 19.6%, so the 2011 3 Series sits squarely on the average. Failures cluster in lighting & signalling, suspension and tyres.
What the MOT record shows
No single area dominates — lighting & signalling (9.6%) and suspension (7.1%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are shock absorbers, position lamp and tread depth — shock absorbers alone was recorded 11,552 times.
Condition tracks the odometer closely. Failures run at 9.8% in the 0-30k band and 22.1% in the 150k+ band, a 12.3-point spread — more than double.
Fuel type barely separates them — petrol fails 18.9% of the time against 20.3% for diesel.
Advisories point at the next bill rather than this one: tyres was flagged on 27.6% of tests without failing them.
The trend is worsening — 18.9% of tests failed in 2021 against 20.7% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 9.6% | 17,385 |
| 2 | Suspension | 7.1% | 12,910 |
| 3 | Tyres | 6.8% | 12,341 |
| 4 | Brakes | 5.5% | 10,007 |
| 5 | Visibility | 3.3% | 5,930 |
| 6 | Emissions & environmental | 2.4% | 4,346 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Shock absorbers | 11,552 |
| 2 | Position lamp | 7,895 |
| 3 | Tread depth | 7,328 |
| 4 | Headlamp aim | 6,902 |
| 5 | Washers | 4,167 |
| 6 | Headlamp | 4,071 |
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 | 27.6% | 50,033 |
| 2 | Suspension | 20.8% | 37,698 |
| 3 | Brakes | 20.5% | 37,163 |
| 4 | Other defects | 9.3% | 16,830 |
| 5 | Emissions & environmental | 6.6% | 11,958 |
| 6 | Visibility | 5.8% | 10,471 |
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 | 1,534 | 9.8% |
| 30-60k | 12,972 | 13.5% |
| 60-90k | 37,666 | 18.0% |
| 90-120k | 52,265 | 20.5% |
| 120-150k | 43,111 | 21.8% |
| 150k+ | 34,031 | 22.1% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 139,145 | 20.3% |
| Petrol | 42,475 | 18.9% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 40,187 | 18.9% |
| 2022 | 39,075 | 19.6% |
| 2023 | 37,146 | 20.1% |
| 2024 | 34,261 | 20.9% |
| 2025 | 30,951 | 20.7% |
What to check before buying a 2011 3 Series
On a 2011 3 Series, lighting & signalling is what the MOT record says goes wrong most — it appeared in 9.6% of tests. Check these areas before you commit.
- Lighting & signalling (9.6% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (7.1% of tests): Worn drop links, bushes, springs or shocks — listen for knocks over bumps and check for uneven tyre wear. Typical repair: £150–£450 per corner.
- Tyres (6.8% 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.
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 many 2011 BMW 3 Seriess pass their MOT?
80.0% of the 181,620 2011 BMW 3 Series MOT tests in this dataset passed — a 20.0% fail rate.
What is the most common MOT failure on a 2011 BMW 3 Series?
Lighting & signalling, recorded in 9.6% of tests, followed by suspension (7.1%).
Does the 2011 3 Series get worse with mileage?
Its MOT fail rate rises from 9.8% in the 0-30k band to 22.1% in the 150k+ band.
Methodology & source. Based on 181,620 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.