2006 BMW 3 Series — MOT failures & pass rate
The 2006 BMW 3 Series passed 78.3% of its 137,664 recorded MOT tests. Executive cars of a similar age fail 23.7% of the time, so this is 2.0pp better than the group it competes with. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
No single area dominates — lighting & signalling (9.9%) and brakes (9.3%) 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 shock absorbers — headlamp aim alone was recorded 7,242 times.
Mileage is the strongest signal on the record: 12.5% of 0-30k cars fail, rising to 23.4% once past 150k.
Fuel type barely separates them — petrol fails 21.0% of the time against 22.2% for diesel.
Advisories point at the next bill rather than this one: brakes was flagged on 42.4% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 9.9% | 13,650 |
| 2 | Brakes | 9.3% | 12,803 |
| 3 | Suspension | 8.3% | 11,459 |
| 4 | Tyres | 6.6% | 9,064 |
| 5 | Visibility | 4.5% | 6,235 |
| 6 | Emissions & environmental | 3.9% | 5,295 |
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 | 7,242 |
| 2 | Tread depth | 5,821 |
| 3 | Shock absorbers | 5,773 |
| 4 | Flexible brake hoses | 4,881 |
| 5 | Washers | 4,662 |
| 6 | Rbt (sp) | 4,315 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Brakes | 42.4% | 58,319 |
| 2 | Suspension | 28.8% | 39,674 |
| 3 | Tyres | 28.2% | 38,863 |
| 4 | Emissions & environmental | 19.3% | 26,581 |
| 5 | Other defects | 10.7% | 14,790 |
| 6 | Lighting & signalling | 8.6% | 11,856 |
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 | 607 | 12.5% |
| 30-60k | 5,242 | 13.9% |
| 60-90k | 18,389 | 18.6% |
| 90-120k | 33,650 | 21.5% |
| 120-150k | 35,227 | 22.5% |
| 150k+ | 44,467 | 23.4% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Diesel | 75,632 | 22.2% |
| Petrol | 62,029 | 21.0% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 35,429 | 21.7% |
| 2022 | 32,042 | 21.6% |
| 2023 | 27,728 | 21.8% |
| 2024 | 23,290 | 22.0% |
| 2025 | 19,175 | 21.3% |
What to check before buying a 2006 3 Series
On a 2006 3 Series, lighting & signalling is what the MOT record says goes wrong most — it appeared in 9.9% of tests. Check these areas before you commit.
- Lighting & signalling (9.9% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (9.3% 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.
- Suspension (8.3% 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.
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 2006 BMW 3 Seriess pass their MOT?
78.3% of the 137,664 2006 BMW 3 Series MOT tests in this dataset passed — a 21.7% fail rate.
What is the most common MOT failure on a 2006 BMW 3 Series?
Lighting & signalling, recorded in 9.9% of tests, followed by brakes (9.3%).
Does the 2006 3 Series get worse with mileage?
Its MOT fail rate rises from 12.5% in the 0-30k band to 23.4% in the 150k+ band.
Methodology & source. Based on 137,664 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.