1991 Porsche 944: MOT pass rate and reliability
80.4% of 1991 Porsche 944s pass the MOT first time, measured across 275 DVSA tests on that model year alone. The average one had covered 116,183 miles.
How the 1991 compares
- Against all Porsche 944s (78.7%, 2,244 tests): +1.7 points
- Against all 1991 cars (75.1%): +5.3 points
- National first-time pass rate, all cars and years: 77%
Every Porsche 944 model year
Pass rates fall as cars age, so the only fair comparison for a 1991 car is other cars of the same age. The full run for the Porsche 944:
| Year | Pass rate | Tests | Avg mileage |
|---|---|---|---|
| 1990 | 83.8% | 309 | 122,267 |
| 1991 | 80.4% | 275 | 116,183 |
What this means if you are buying a 1991 944
The 1991 sits close to the Porsche 944 average, so there is no strong model-year signal either way. Judge the individual car on its own history. Check the exact car with the free MOT history checker before you buy, and run its VIN and mileage through our free VIN decoder and clocking check.
What a 35-year-old car fails on
A 1991 car is 35 years old now, and age drives the failure mix more than the badge does. Across all cars tested, these are the categories that actually cause failures:
- Lights and electrical: 10.36% of all cars tested
- Suspension: 8.65% of all cars tested
- Tyres: 6.23% of all cars tested
- Brakes: 6.1% of all cars tested
- Visibility: wipers, washers, glass: 4.65% of all cars tested
- Body, chassis and structure: 3.18% of all cars tested
That is high mileage, so timing belts, clutches, suspension bushes and corrosion are the items worth budgeting for rather than the MOT itself. On a 1991 Porsche 944 the average at test was 116,183 miles, so treat anything far above that as a car that has worked harder than its peers, and anything far below as one worth checking for the faults that come from standing still.
The strongest year for this model is 1990 at 83.8%, and the weakest in our data is 1991 at 80.4%. That 3.4 point spread across the model's life is why comparing a 1991 car against a newer one tells you very little.
Nearby model years
- 1990 Porsche 944 - 83.8%