Ford SIERRA - 1990
121.1 faults per 100 tests
Year average for all cars of 1990 is 257.0 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Ford SIERRA, model year 1990.
Sample size: 519 cars, 907 tests and 1,098 recorded faults.
0%
Less faults compared to the average car of same model year
Less faults compared to the average car of same model year
Quick summary
Total: 519 cars
The 1990 Ford Sierra shows a notably lower overall defect rate compared to the average car of the same year, with 121 defects per 100 vehicles against the average of 256. This reflects a 52.8% reduction in defects. The model excels particularly in categories such as brakes, where it has 45.6% defects compared to the average of 102.4%, and visibility, with only 8.8% defects versus 21.3% on average. Additionally, mileage trends indicate that defect rates decrease as mileage increases, with the highest defect rate found in vehicles with under 31,000 miles. Overall, the Ford Sierra demonstrates better performance in several critical areas compared to its peers.
Cars by mileage segment
Total: 519 cars
More model years for Ford SIERRA
Other models from Ford
Categories
Brakes
▲ 55.2% better
45.6 faults / 100 tests
Year avg: 101.8 / 100 tests
- Brake pipe damaged or excessively corroded
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Flexible brake hose: excessively damaged, deteriorated, chafed, twisted or stretched
- Brake hose ferrules: excessively corroded
- Brake lining or pad: worn below 1.5mm
Steering
▲ 34.4% better
16.8 faults / 100 tests
Year avg: 25.6 / 100 tests
- Power steering fluid leaking or system malfunctioning
- A steering ball joint: with excessive wear or free play
- Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
- Excessive radial movement between the top of the steering column and the shaft indicating an excessively worn top bearing
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▲ 58.5% better
8.8 faults / 100 tests
Year avg: 21.2 / 100 tests
- Wiper blade: defective
- Wiper blade: missing or obviously not clearing the windscreen
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 56.4% better
25.6 faults / 100 tests
Year avg: 58.7 / 100 tests
- The aim of a headlamp is not within limits laid down in the requirements
- A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
- Stop lamp(s): all missing or inoperative
- Beam image obviously incorrect
- A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
Wheels & Suspension
▲ 52.8% better
83.6 faults / 100 tests
Year avg: 177.0 / 100 tests
- Tyre tread depth not in accordance with the requirements
- The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
- The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A suspension pin, bush, joint or bearing: excessively worn
Body/Structure
▲ 49.4% better
31.5 faults / 100 tests
Year avg: 62.3 / 100 tests
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
- Exhaust system has a major leak or is insecure
- Body, cab or chassis: excessively corroded at mounting points
- A transmission shaft constant velocity joint boot: severely deteriorated
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
Equipment
▲ 76.4% better
3.7 faults / 100 tests
Year avg: 15.7 / 100 tests
- is significantly reduced or The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a ’prescribed area’): inadequately repaired
- is significantly reduced or The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a ’prescribed area’): inadequately repaired
- Audible warning:
Other
▲ 48.7% better
26.5 faults / 100 tests
Year avg: 51.7 / 100 tests
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Emissions levels exceed default limits
- Emissions test unable to be completed
- Emissions levels exceed default limits
- Exhaust noise levels in excess of those permitted
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 89
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 69
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 67
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 55
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 52
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 48
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
ADVISORY
Occurrences: 39
Brake hose ferrules: excessively corroded
ADVISORY
Occurrences: 35
Body, cab or chassis: excessively corroded at mounting points
ADVISORY
Occurrences: 31
Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
ADVISORY
Occurrences: 28
Serious faults (Top 10)
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 52
Emissions levels exceed default limits
FAIL
Occurrences: 15
is significantly reduced or The strength or continuity of the load bearing structure within 30cm of any seat belt anchorage (a ’prescribed area’): inadequately repaired
FAIL
Occurrences: 14
Beam image obviously incorrect
FAIL
Occurrences: 10
Significant brake effort recorded with no brake applied indicating a binding brake
FAIL
Occurrences: 9
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 8
Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
FAIL
Occurrences: 7
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 7
A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
FAIL
Occurrences: 7
A spring: or spring component fractured or seriously weakened
FAIL
Occurrences: 6