FordSierra MOT results
In 2025, 88.2% of Ford Sierra MOT tests were passed first time, better than the 72.6% for cars of the same age. 1.7% had at least one dangerous defect (5.3% for cars the same age). The typical Ford Sierra tested was 35 years old with 53,700 miles. Based on 2,494 initial MOT tests in Great Britain.
RegisterHow many Ford Sierra cars are on the road
- First-time pass
- 88.2%no defects to fix
- Cars the same age
- 72.6%first-time pass
- Fixed at the test
- 2.0%passed after repair
- Failed
- 9.7%needed a retest
- Dangerous defect
- 1.7%same age 5.3%
- Typical mileage
- 53,700at the test
First-time pass rate by year first registered
| Year first registered | Tests | First-time pass | All cars |
|---|---|---|---|
| 1993 | 98 | 81.6% | 68.6% |
| 1992 | 316 | 83.5% | 68.9% |
| 1991 | 332 | 88.0% | 71.7% |
| 1990 | 393 | 87.0% | 72.7% |
| 1989 | 391 | 88.7% | 73.4% |
| 1988 | 257 | 90.7% | 73.5% |
| 1987 | 345 | 91.0% | 74.3% |
| 1986 | 214 | 93.0% | 73.6% |
| 1985 | 31 | 96.8% | 76.1% |
| 1984 | 66 | 87.9% | 75.7% |
| 1983 | 41 | 75.6% | 78.4% |
Years with fewer than 30 tests are left out.
By age at the test
| Age | Tests | First-time pass | All cars | Typical miles |
|---|---|---|---|---|
| 15-19 years | 2 | 100.0% | 57.6% | 29,600 |
| 20-29 years | 7 | 100.0% | 59.6% | 41,300 |
| 30-39 years | 2,363 | 88.3% | 71.3% | 53,900 |
| 40+ years | 122 | 85.2% | 82.0% | 49,500 |
Where they fail
Share of tests with at least one failure in each area, against cars of the same age.
A test can fail in more than one area. Failures fixed during the test are included.
Most common failures
The 10 defects that failed Ford Sierra tests most often, as a share of all tests.
| Failure | Tests | Cars the same age | vs same age | Marked dangerous |
|---|---|---|---|---|
| Non catalyst emissions: emissions carbon monoxide content excessive Emissions and leaks | 1.4% | 2.1% | 0.7× | 0.0% |
| Component mounting prescribed areas: prescribed area excessively corroded significantly reducing structural strength Suspension | 1.3% | 2.7% | 0.5× | 0.0% |
| Washers: provides insufficient washer liquid Visibility (wipers, glass, mirrors) | 0.8% | 1.5% | 0.5× | 0.0% |
| Horn: not working Lights and electrics | 0.7% | 1.5% | 0.5× | 0.0% |
| Stop lamp: not working Lights and electrics | 0.7% | 1.5% | 0.5× | 0.0% |
| Prescribed areas: prescribed area strength or continuity significantly reduced Seat belts and airbags | 0.7% | 0.9% | 0.8× | 0.0% |
| Rear fog lamp: not working Lights and electrics | 0.6% | 2.5% | 0.2× | 0.0% |
| Service brake performance: excessively binding Brakes | 0.6% | 1.6% | 0.4× | 0.0% |
| Wipers: does not clear the windscreen effectively Visibility (wipers, glass, mirrors) | 0.6% | 1.9% | 0.3× | 0.0% |
| Headlamp aim: too low Lights and electrics | 0.6% | 1.5% | 0.4× | 0.0% |
“vs same age” compares this model with cars of the same age: 2.0× means twice as often. “Marked dangerous” is how often the tester recorded that failure as dangerous.
Most common advisories
Things the tester noted to watch, which don’t fail the test.
| Advisory | Tests |
|---|---|
| Engine oil leaks: leak, but not excessive | 7.1% |
| Rigid brake pipes: corroded, covered in grease or other material | 3.3% |
| Tread depth: worn close to legal limit/worn on edge | 2.8% |
| Pins and bushes: pin or bush worn but not resulting in excessive movement | 2.6% |
| Condition: slightly damaged/cracking or perishing | 2.3% |
| Exhaust system: has a minor leak of exhaust gases | 2.2% |
| Brake discs: worn, pitted or scored, but not seriously weakened | 1.8% |
| Coil spring: corroded | 1.8% |
| Integral vehicle structure condition: is corroded but structural rigidity is not significantly reduced | 1.5% |
| Non-component advisories: Play in steering rack inner joint(s) | 1.5% |
By fuel
| Fuel | Tests | First-time pass |
|---|---|---|
| Petrol | 2,455 | 88.5% |
| Diesel | 38 | 71.1% |
Fuels with fewer than 30 tests are left out. Different fuels often mean different ages, so compare with care.