1994 Ford Mustang — MOT failures & pass rate
311 MOT tests on the 1994 Ford Mustang are in this dataset, and 82.3% of them passed. Against coupes & convertibles of a similar age (19.4% fail rate), the 1994 Mustang comes out 1.7pp better. Failures cluster in brakes, lighting & signalling and suspension.
What the MOT record shows
No single area dominates — brakes (12.9%) and lighting & signalling (10.9%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are rbt (sp), position lamp and service brake performance — rbt (sp) alone was recorded 24 times.
A 90-120k example is materially riskier than a 30-60k one: 23.3% versus 16.4%.
Advisories point at the next bill rather than this one: brakes was flagged on 28.3% of tests without failing them.
The trend is improving — the fail rate fell from 22.7% in 2022 to 17.9% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Brakes | 12.9% | 40 |
| 2 | Lighting & signalling | 10.9% | 34 |
| 3 | Suspension | 4.8% | 15 |
| 4 | Visibility | 3.2% | 10 |
| 5 | Emissions & environmental | 2.3% | 7 |
| 6 | Tyres | 2.3% | 7 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Rbt (sp) | 24 |
| 2 | Position lamp | 23 |
| 3 | Service brake performance | 18 |
| 4 | Headlamp aim | 17 |
| 5 | Ball joint dust cover | 13 |
| 6 | Headlamp | 11 |
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 | 28.3% | 88 |
| 2 | Suspension | 18.0% | 56 |
| 3 | Emissions & environmental | 11.3% | 35 |
| 4 | Tyres | 11.3% | 35 |
| 5 | Steering | 10.9% | 34 |
| 6 | Lighting & signalling | 9.3% | 29 |
Failure rate by mileage
Higher-mileage cars tend to fail more — often the most useful guide to real condition.
| Mileage band | Tests | Fail rate |
|---|---|---|
| 30-60k | 55 | 16.4% |
| 60-90k | 110 | 13.6% |
| 90-120k | 86 | 23.3% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2022 | 75 | 22.7% |
| 2023 | 73 | 16.4% |
| 2024 | 74 | 16.2% |
| 2025 | 78 | 17.9% |
What to check before buying a 1994 Mustang
On a 1994 Mustang, brakes is what the MOT record says goes wrong most — it appeared in 12.9% of tests. Check these areas before you commit.
- Brakes (12.9% 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.
- Lighting & signalling (10.9% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Suspension (4.8% 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 Ford Mustangs pass their MOT?
82.3% of the 311 1994 Ford Mustang MOT tests in this dataset passed — a 17.7% fail rate.
What is the most common MOT failure on a 1994 Ford Mustang?
Brakes, recorded in 12.9% of tests, followed by lighting & signalling (10.9%).
Does the 1994 Mustang get worse with mileage?
Its MOT fail rate rises from 16.4% in the 30-60k band to 23.3% in the 90-120k band.
Methodology & source. Based on 311 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.