1990 Ford Sierra: MOT pass rate and reliability
88.5% of 1990 Ford Sierras pass the MOT first time, measured across 312 DVSA tests on that model year alone. The average one had covered 48,905 miles.
How the 1990 compares
- Against all Ford Sierras (88.5%, 2,297 tests): +0 points
- Against all 1990 cars (76%): +12.5 points
- National first-time pass rate, all cars and years: 77%
Every Ford Sierra model year
Pass rates fall as cars age, so the only fair comparison for a 1990 car is other cars of the same age. The full run for the Ford Sierra:
| Year | Pass rate | Tests | Avg mileage |
|---|---|---|---|
| 1990 | 88.5% | 312 | 48,905 |
| 1991 | 87.1% | 263 | 52,217 |
| 1992 | 83.3% | 299 | 51,153 |
What this means if you are buying a 1990 Sierra
The 1990 sits close to the Ford Sierra 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 36-year-old car fails on
A 1990 car is 36 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 below average for a car this age, worth a mileage-consistency check since an unusually low reading is sometimes clocking rather than luck. On a 1990 Ford Sierra the average at test was 48,905 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.
1990 is the strongest year on record for this model at 88.5%, ahead of every other year we hold data for.
Nearby model years
- 1991 Ford Sierra - 87.1%
- 1992 Ford Sierra - 83.3%