Jaguar XJS - 1991
198.6 faults per 100 tests
Year average for all cars of 1991 is 263.4 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Jaguar XJS, model year 1991.
Sample size: 282 cars, 492 tests and 977 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: 282 cars
The 1991 Jaguar XJS has an overall defect rate of 199 defects per 100 vehicles, which is significantly lower than the yearly average of 263 defects per 100 vehicles, representing a 25% improvement. Mileage-related trends indicate that defects increase with higher mileage, particularly in the 124,000+ miles category, where the XJS shows more issues than the average car. Notably, this model excels in several categories, including brakes, where it performs 38% better than the average, as well as visibility and lights/electrics, both of which have lower defect rates than typical for cars of its age. Overall, the XJS demonstrates a strong performance in reliability compared to similar vehicles from the same year.
Cars by mileage segment
Total: 282 cars
More model years for Jaguar XJS
Other models from Jaguar
Categories
Brakes
▲ 36.6% better
66.7 faults / 100 tests
Year avg: 105.2 / 100 tests
- Parking brake efficiency: below minimum requirement
- Brake pipe damaged or excessively corroded
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Parking brake efficiency: less than 50% of the required value
- Significant brake effort recorded with no brake applied indicating a binding brake
Steering
▲ 18.6% better
23.6 faults / 100 tests
Year avg: 29.0 / 100 tests
- Power steering fluid leaking or system malfunctioning
- Power steering fluid leaking or system malfunctioning
- Power steering: inoperative and steering adversely affected
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
- A steering ball joint: with excessive wear or free play
Visibility
▲ 27.4% better
15.4 faults / 100 tests
Year avg: 21.2 / 100 tests
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Obligatory mirror or device: slightly damaged or loose
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
Lights & Electrics
▲ 34.5% better
39.0 faults / 100 tests
Year avg: 59.5 / 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
- A headlamp: missing, inoperative or more than ½ not functioning in the case of LED
- A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
- Headlamp reflector or lens: slightly defective
Wheels & Suspension
▲ 7.6% better
163.0 faults / 100 tests
Year avg: 176.5 / 100 tests
- A suspension pin, bush, joint or bearing: excessively worn
- A wheel bearing: with excessive play
- Tyre tread depth not in accordance with the requirements
- A tyre: with a lump, bulge or tear … or with cords exposed or damaged
- A spring: or spring component fractured or seriously weakened
Body/Structure
▲ 61.3% better
24.8 faults / 100 tests
Year avg: 64.1 / 100 tests
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
- Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
- Exhaust system has a major leak or is insecure
- Exhaust system has a major leak or is insecure
- Body, cab or chassis: excessively corroded at mounting points
Equipment
▲ 64.7% better
6.5 faults / 100 tests
Year avg: 18.4 / 100 tests
- A seat belt:
- Seat belt buckle missing, damaged or not functioning as intended
- 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
- A seat belt: webbing or flexible stalk significantly stretched or weakened
Other
▼ 9.8% worse
58.1 faults / 100 tests
Year avg: 52.9 / 100 tests
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Emissions test unable to be completed
- Emissions levels exceed the manufacturer’s specified limits
- Emissions levels exceed default limits
- Any part of the noise suppression system: insecure
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: 129
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 72
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 72
A wheel bearing: with excessive play
ADVISORY
Occurrences: 67
A spring: or spring component fractured or seriously weakened
ADVISORY
Occurrences: 60
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 34
Power steering fluid leaking or system malfunctioning
ADVISORY
Occurrences: 29
Significant brake effort recorded with no brake applied indicating a binding brake
ADVISORY
Occurrences: 22
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 21
Exhaust system has a major leak or is insecure
ADVISORY
Occurrences: 20
Serious faults (Top 10)
Parking brake efficiency: below minimum requirement
FAIL
Occurrences: 15
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 15
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 13
Parking brake efficiency: less than 50% of the required value
FAIL
Occurrences: 12
Significant brake effort recorded with no brake applied indicating a binding brake
FAIL
Occurrences: 11
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 9
Emissions levels exceed default limits
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
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
FAIL
Occurrences: 8
Parking brake inoperative on one side, or in the case of testing on the road, the vehicle deviates excessively from a straight line
FAIL
Occurrences: 6