1983 Ford Fiesta — MOT failures & pass rate
The 1983 Ford Fiesta passed 86.8% of its 878 recorded MOT tests. Against superminis of a similar age (16.2% fail rate), the 1983 Fiesta comes out 3.0pp better. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
No single area dominates — lighting & signalling (7.7%) and brakes (6.5%) are close, so failures are spread across several systems rather than one weak point.
At component level the recurring items are non catalyst emissions, component mounting prescribed areas and headlamp aim — non catalyst emissions alone was recorded 44 times.
Mileage matters less than usual here: the 1983 Fiesta fails 14.7% of the time in the 0-30k band and 18.0% at 90-120k, a spread of only 3.3 points.
Suspension is the most common advisory, noted on 11.3% of tests — work that passed today but is likely due soon.
The trend is improving — the fail rate fell from 17.0% in 2021 to 12.5% in 2025, as the worst-kept examples leave the fleet.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 7.7% | 68 |
| 2 | Brakes | 6.5% | 57 |
| 3 | Suspension | 5.0% | 44 |
| 4 | Emissions & environmental | 4.7% | 41 |
| 5 | Visibility | 4.2% | 37 |
| 6 | Body, structure & corrosion | 3.1% | 27 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Non catalyst emissions | 44 |
| 2 | Component mounting prescribed areas | 42 |
| 3 | Headlamp aim | 36 |
| 4 | Service brake performance | 30 |
| 5 | Washers | 28 |
| 6 | Service brake imbalance | 28 |
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 | 11.3% | 99 |
| 2 | Brakes | 10.6% | 93 |
| 3 | Body, structure & corrosion | 7.1% | 62 |
| 4 | Emissions & environmental | 6.6% | 58 |
| 5 | Tyres | 5.1% | 45 |
| 6 | Other defects | 3.1% | 27 |
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 | 251 | 14.7% |
| 30-60k | 256 | 13.3% |
| 60-90k | 311 | 11.3% |
| 90-120k | 50 | 18.0% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 236 | 17.0% |
| 2022 | 248 | 13.3% |
| 2023 | 218 | 11.0% |
| 2024 | 96 | 9.4% |
| 2025 | 80 | 12.5% |
What to check before buying a 1983 Fiesta
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 7.7% of tests. Start there.
- Lighting & signalling (7.7% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (6.5% 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 (5.0% 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 1983 Ford Fiestas pass their MOT?
86.8% of the 878 1983 Ford Fiesta MOT tests in this dataset passed — a 13.2% fail rate.
What is the most common MOT failure on a 1983 Ford Fiesta?
Lighting & signalling, recorded in 7.7% of tests, followed by brakes (6.5%).
Does the 1983 Fiesta get worse with mileage?
Its MOT fail rate rises from 14.7% in the 0-30k band to 18.0% in the 90-120k band.
Methodology & source. Based on 878 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.