2008 BMW Z4 — MOT failures & pass rate
11,465 MOT tests on the 2008 BMW Z4 are in this dataset, and 79.7% of them passed. That is effectively the same as coupes & convertibles of a similar age (21.1% fail rate), so the MOT record here is unremarkable in either direction. Failures cluster in suspension, lighting & signalling and brakes.
What the MOT record shows
No single area dominates — suspension (8.3%) and lighting & signalling (7.4%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are pins and bushes, malfunction indicator lamp and headlamp aim — pins and bushes alone was recorded 435 times.
Condition tracks the odometer closely. Failures run at 7.1% in the 0-30k band and 28.2% in the 150k+ band, a 21.1-point spread — more than double.
Tyres is the most common advisory, noted on 22.1% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Suspension | 8.3% | 952 |
| 2 | Lighting & signalling | 7.4% | 848 |
| 3 | Brakes | 5.6% | 647 |
| 4 | Emissions & environmental | 4.8% | 555 |
| 5 | Tyres | 4.6% | 530 |
| 6 | Visibility | 3.6% | 409 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Pins and bushes | 435 |
| 2 | Malfunction indicator lamp | 397 |
| 3 | Headlamp aim | 368 |
| 4 | Coil spring | 316 |
| 5 | Wipers | 294 |
| 6 | Ball joint | 277 |
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 | 22.1% | 2,534 |
| 2 | Suspension | 21.7% | 2,484 |
| 3 | Brakes | 21.2% | 2,429 |
| 4 | Emissions & environmental | 12.8% | 1,462 |
| 5 | Lighting & signalling | 7.5% | 860 |
| 6 | Body, structure & corrosion | 5.8% | 659 |
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 | 494 | 7.1% |
| 30-60k | 2,631 | 16.5% |
| 60-90k | 4,538 | 20.9% |
| 90-120k | 2,856 | 23.0% |
| 120-150k | 799 | 26.5% |
| 150k+ | 142 | 28.2% |
Failure rate by age
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 2,408 | 20.2% |
| 2022 | 2,369 | 19.7% |
| 2023 | 2,337 | 20.2% |
| 2024 | 2,225 | 20.6% |
| 2025 | 2,126 | 20.9% |
What to check before buying a 2008 Z4
The failure pattern for this year is specific enough to inspect against: suspension accounted for 8.3% of tests. Start there.
- 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.
- Lighting & signalling (7.4% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (5.6% 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 BMW Z4s pass their MOT?
79.7% of the 11,465 2008 BMW Z4 MOT tests in this dataset passed — a 20.3% fail rate.
What is the most common MOT failure on a 2008 BMW Z4?
Suspension, recorded in 8.3% of tests, followed by lighting & signalling (7.4%).
Does the 2008 Z4 get worse with mileage?
Its MOT fail rate rises from 7.1% in the 0-30k band to 28.2% in the 150k+ band.
Methodology & source. Based on 11,465 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.