1994 Mazda MX-5 — MOT failures & pass rate
2,728 MOT tests on the 1994 Mazda MX-5 are in this dataset, and 76.1% of them passed. Coupes & convertibles of a similar age fail 19.5% of the time, so this is 4.3pp worse 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 (11.5%) and brakes (9.9%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are catalyst emissions, prescribed areas and headlamp aim — catalyst emissions alone was recorded 261 times.
Condition tracks the odometer closely. Failures run at 8.0% in the 0-30k band and 29.0% in the 150k+ band, a 21.0-point spread — more than double.
Advisories point at the next bill rather than this one: brakes was flagged on 26.8% of tests without failing them.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 11.5% | 313 |
| 2 | Brakes | 9.9% | 271 |
| 3 | Suspension | 9.1% | 249 |
| 4 | Emissions & environmental | 7.7% | 211 |
| 5 | Body, structure & corrosion | 4.9% | 134 |
| 6 | Seat belts & restraints | 4.5% | 122 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Catalyst emissions | 261 |
| 2 | Prescribed areas | 192 |
| 3 | Headlamp aim | 166 |
| 4 | Component mounting prescribed areas | 140 |
| 5 | Service brake performance | 114 |
| 6 | Rbt (sp) | 112 |
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 | 26.8% | 731 |
| 2 | Suspension | 26.0% | 709 |
| 3 | Emissions & environmental | 19.5% | 531 |
| 4 | Body, structure & corrosion | 14.4% | 394 |
| 5 | Tyres | 12.6% | 344 |
| 6 | Lighting & signalling | 5.9% | 160 |
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 | 50 | 8.0% |
| 30-60k | 199 | 13.6% |
| 60-90k | 626 | 19.8% |
| 90-120k | 866 | 23.9% |
| 120-150k | 622 | 29.4% |
| 150k+ | 365 | 29.0% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 511 | 24.3% |
| 2022 | 519 | 26.6% |
| 2023 | 483 | 21.9% |
| 2024 | 629 | 23.1% |
| 2025 | 586 | 23.5% |
What to check before buying a 1994 MX-5
On a 1994 MX-5, lighting & signalling is what the MOT record says goes wrong most — it appeared in 11.5% of tests. Check these areas before you commit.
- Lighting & signalling (11.5% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (9.9% 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 (9.1% 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.
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 1994 Mazda MX-5s pass their MOT?
76.1% of the 2,728 1994 Mazda MX-5 MOT tests in this dataset passed — a 23.9% fail rate.
What is the most common MOT failure on a 1994 Mazda MX-5?
Lighting & signalling, recorded in 11.5% of tests, followed by brakes (9.9%).
Does the 1994 MX-5 get worse with mileage?
Its MOT fail rate rises from 8.0% in the 0-30k band to 29.0% in the 150k+ band.
Methodology & source. Based on 2,728 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.