1983 Porsche 944 — MOT failures & pass rate
The 1983 Porsche 944 passed 78.0% of its 378 recorded MOT tests. Against coupes & convertibles of a similar age (15.0% fail rate), the 1983 944 comes out 7.0pp worse. Failures cluster in lighting & signalling, brakes and suspension.
What the MOT record shows
One area stands out: lighting & signalling, recorded in 14.8% of tests against 8.5% for the next-worst category.
At component level the recurring items are service brake performance, washers and component mounting prescribed areas — service brake performance alone was recorded 38 times.
A 90-120k example is materially riskier than a 0-30k one: 28.9% versus 23.4%.
Suspension is the most common advisory, noted on 28.3% of tests — work that passed today but is likely due soon.
How it compares
Top failure categories
| # | Category | % of tests affected | Tests |
|---|---|---|---|
| 1 | Lighting & signalling | 14.8% | 56 |
| 2 | Brakes | 8.5% | 32 |
| 3 | Suspension | 7.1% | 27 |
| 4 | Visibility | 7.1% | 27 |
| 5 | Body, structure & corrosion | 5.3% | 20 |
| 6 | Emissions & environmental | 4.5% | 17 |
Most common specific failures
The exact components most often recorded as failures — more specific than the categories above.
| # | Failure item | Times recorded |
|---|---|---|
| 1 | Service brake performance | 38 |
| 2 | Washers | 24 |
| 3 | Component mounting prescribed areas | 21 |
| 4 | Headlamp aim | 21 |
| 5 | Headlamp | 20 |
| 6 | Position lamp | 14 |
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 | 28.3% | 107 |
| 2 | Brakes | 18.5% | 70 |
| 3 | Emissions & environmental | 9.3% | 35 |
| 4 | Body, structure & corrosion | 7.7% | 29 |
| 5 | Other defects | 7.1% | 27 |
| 6 | Steering | 6.1% | 23 |
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 | 111 | 23.4% |
| 30-60k | 110 | 22.7% |
| 60-90k | 113 | 18.6% |
| 90-120k | 38 | 28.9% |
Trend over time
| Dataset year | Tests | Fail rate |
|---|---|---|
| 2021 | 102 | 23.5% |
| 2022 | 108 | 23.2% |
| 2023 | 100 | 22.0% |
| 2024 | 37 | 13.5% |
| 2025 | 31 | 22.6% |
What to check before buying a 1983 944
The failure pattern for this year is specific enough to inspect against: lighting & signalling accounted for 14.8% of tests. Start there.
- Lighting & signalling (14.8% of tests): Often a cheap bulb, but persistent issues can mean wiring or corrosion in the units. Typical repair: £10–£150.
- Brakes (8.5% 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 (7.1% 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 1983 Porsche 944s pass their MOT?
78.0% of the 378 1983 Porsche 944 MOT tests in this dataset passed — a 22.0% fail rate.
What is the most common MOT failure on a 1983 Porsche 944?
Lighting & signalling, recorded in 14.8% of tests, followed by brakes (8.5%).
Does the 1983 944 get worse with mileage?
Its MOT fail rate rises from 23.4% in the 0-30k band to 28.9% in the 90-120k band.
Methodology & source. Based on 378 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.