2008 Mazda 3 — MOT failures & pass rate
The 2008 Mazda 3 passed 71.2% of its 46,133 recorded MOT tests. Small family cars of a similar age fail 26.3% of the time, so this is 2.5pp worse than the group it competes with. Failures cluster in lighting & signalling, suspension and brakes.
What the MOT record shows
No single area dominates — lighting & signalling (18.2%) and suspension (18.1%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are position lamp, ball joint and headlamp — position lamp alone was recorded 4,464 times.
Condition tracks the odometer closely. Failures run at 12.1% in the 0-30k band and 33.1% in the 150k+ band, a 21.0-point spread — more than double.
The petrol cars hold up better: 28.7% fail against 30.3% for diesel, a 1.5-point gap across 46,133 tests.
Suspension is the most common advisory, noted on 45.4% of tests — work that passed today but is likely due soon.
The trend is worsening — 27.4% of tests failed in 2021 against 29.3% in 2025, the usual pattern as a fleet ages.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 18.2% | 8,386 |
| 2 | Suspension | 18.1% | 8,362 |
| 3 | Brakes | 7.2% | 3,323 |
| 4 | Tyres | 6.4% | 2,933 |
| 5 | Emissions & environmental | 5.7% | 2,608 |
| 6 | Visibility | 4.2% | 1,940 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Position lamp | 4,464 |
| 2 | Ball joint | 3,648 |
| 3 | Headlamp | 2,995 |
| 4 | Headlamp aim | 2,908 |
| 5 | Coil spring | 2,112 |
| 6 | Pins and bushes | 2,041 |
Top advisory categories
Advisories aren't failures, but they flag work likely needed soon — useful when budgeting.
| # | Category | % of tests with advisory | Tests |
|---|---|---|---|
| 1 | Suspension | 45.4% | 20,924 |
| 2 | Tyres | 29.8% | 13,734 |
| 3 | Brakes | 24.8% | 11,442 |
| 4 | Lighting & signalling | 16.5% | 7,605 |
| 5 | Body, structure & corrosion | 13.7% | 6,328 |
| 6 | Other defects | 12.4% | 5,717 |
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 | 463 | 12.1% |
| 30-60k | 5,122 | 20.5% |
| 60-90k | 14,389 | 27.4% |
| 90-120k | 15,937 | 30.9% |
| 120-150k | 7,622 | 32.1% |
| 150k+ | 2,588 | 33.1% |
Failure rate by age
By fuel type
| Fuel | Tests | Fail rate |
|---|---|---|
| Petrol | 44,123 | 28.7% |
| Diesel | 2,010 | 30.3% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 11,023 | 27.4% |
| 2022 | 10,304 | 28.5% |
| 2023 | 9,441 | 29.7% |
| 2024 | 8,294 | 29.5% |
| 2025 | 7,071 | 29.3% |
What to check before buying a 2008 3
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 18.2% of tests. Start there.
- Lighting & signalling (18.2% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (18.1% 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.
- Brakes (7.2% 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 many 2008 Mazda 3s pass their MOT?
71.2% of the 46,133 2008 Mazda 3 MOT tests in this dataset passed — a 28.8% fail rate.
What is the most common MOT failure on a 2008 Mazda 3?
Lighting & signalling, recorded in 18.2% of tests, followed by suspension (18.1%).
Does the 2008 3 get worse with mileage?
Its MOT fail rate rises from 12.1% in the 0-30k band to 33.1% in the 150k+ band.
Methodology & source. Based on 46,133 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.