Ford Sierra MOT pass rate by year
How the Ford Sierra's MOT pass rate changes year by year, from 1983 to 1993, across the DVSA record.
What is the Ford Sierra MOT pass rate by year?
The MOT pass and failure rate for each Ford Sierra model year, from the DVSA record. Only years with at least 1,000 tests are shown, so each figure is a real average rather than a handful of cars. The Ford Sierra averages 30.4% failures across all years.
| Year | Pass rate | Failure rate | Tests |
|---|---|---|---|
| 1983 | 74.2% | 25.8% | 5,450 |
| 1984 | 75.1% | 24.9% | 5,651 |
| 1985 | 71.6% | 28.4% | 2,595 |
| 1986 | 80.5% | 19.5% | 8,160 |
| 1987 | 78.9% | 21.1% | 14,617 |
| 1988 | 71.3% | 28.7% | 19,651 |
| 1989 | 70.2% | 29.8% | 37,479 |
| 1990 | 68.3% | 31.7% | 48,569 |
| 1991 | 66.7% | 33.3% | 52,913 |
| 1992 | 67.8% | 32.2% | 65,446 |
| 1993 | 68.8% | 31.2% | 21,179 |
Does age change how often a Ford Sierra fails?
Older Ford Sierras fail more often, as expected. The 1983 cars fail 25.8% of tests against 31.2% for the 1993. Across every year the model averages 30.4%. The 1991 is the weakest year at 33.3%, and the 1986 the strongest at 19.5%.
More on the Ford Sierra
The full failure breakdown for this model, and how it compares to others.
| See also |
|---|
| Ford Sierra: common MOT failures and the parts that fix them |
| All Ford models compared by MOT failure rate |
| MOT failure rates across Britain |
Sources: DVSA MOT History API: MOT test results and defect data ยท DVSA MOT testing data for Great Britain