Porsche 944 - 1989
195.0 faults per 100 tests
Year average for all cars of 1989 is 252.8 faults per 100 tests
Dataset: MOT tests in Great Britain (period: 2024-01-01 to 2025-09-10) for Porsche 944, model year 1989.
Sample size: 521 cars, 1,009 tests and 1,968 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: 521 cars
The 1989 Porsche 944 has an overall defect rate of 195 per 100 vehicles, which is notably lower than the average of 249 per 100 for cars of the same year, indicating a 21.7% improvement. This model shows an increase in defects with higher mileage, particularly peaking at 425 per 100 for those with 62,000 to 93,000 miles. In several key categories, such as steering and body structure, the Porsche 944 outperforms the average, with a 34.5% and 50.7% better rate of defects, respectively. Overall, the vehicle demonstrates a solid reliability profile compared to its peers from the same year.
Cars by mileage segment
Total: 521 cars
More model years for Porsche 944
Other models from Porsche
Categories
Brakes
▼ 8.0% worse
104.9 faults / 100 tests
Year avg: 97.1 / 100 tests
- Brake pipe damaged or excessively corroded
- Brake disc or drum: insecure, fractured or otherwise likely to fail
- Significant brake effort recorded with no brake applied indicating a binding brake
- Brake hose ferrules: excessively corroded
- Significant brake effort recorded with no brake applied indicating a binding brake
Steering
▲ 35.6% better
16.8 faults / 100 tests
Year avg: 26.1 / 100 tests
- Power steering fluid leaking or system malfunctioning
- Steering rack gaiter or ball joint dust cover: missing or no longer prevents the ingress of dirt etc.
- A steering ball joint: with excessive wear or free play
- Excessive wear or play in a universal joint or a flexible coupling excessively deteriorated
- Steering rack gaiter or ball joint dust cover: damaged or deteriorated
Visibility
▼ 1.8% worse
22.4 faults / 100 tests
Year avg: 22.0 / 100 tests
- Windscreen or window damaged or seriously discoloured: but not adversely affecting driver’s view
- Obligatory mirror or device: slightly damaged or loose
- Wiper blade: defective
- Windscreen washers not working or not providing sufficient fluid to clear the windscreen
- Wiper blade: missing or obviously not clearing the windscreen
Lights & Electrics
▲ 19.2% better
49.6 faults / 100 tests
Year avg: 61.4 / 100 tests
- Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
- A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
- The aim of a headlamp is not within limits laid down in the requirements
- An obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning
- A rear registration plate lamp or light source missing or inoperative: when rear registration plate has 2 or more lamps or light sources
Wheels & Suspension
▲ 27.6% better
119.9 faults / 100 tests
Year avg: 165.6 / 100 tests
- A suspension pin, bush, joint or bearing: excessively worn
- 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
- Tyre tread depth not in accordance with the requirements
- A wheel bearing: with excessive play
Body/Structure
▲ 52.2% better
29.5 faults / 100 tests
Year avg: 61.7 / 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
- Body, cab or chassis: excessively corroded at mounting points
- Exhaust system has a major leak or is insecure
- Body, cab or chassis: excessively corroded at mounting points
Equipment
▲ 59.5% better
7.5 faults / 100 tests
Year avg: 18.5 / 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
- A seat belt: webbing or flexible stalk significantly stretched or weakened
- Audible warning:
- 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
▲ 26.2% better
39.2 faults / 100 tests
Year avg: 53.1 / 100 tests
- Emissions levels exceed default limits
- Emissions test unable to be completed
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
- Emissions levels exceed the manufacturer’s specified limits
Fault rate by mileage segment
Model
Year average
* Metric: faults per 100 tests.
Most common faults (Top 10)
Brake pipe damaged or excessively corroded
ADVISORY
Occurrences: 184
Fluid: leaking excessively and likely to harm the environment or to pose a safety risk to other road users
ADVISORY
Occurrences: 163
A tyre: with a lump, bulge or tear … or with cords exposed or damaged
ADVISORY
Occurrences: 123
A wheel bearing: with excessive play
ADVISORY
Occurrences: 119
A suspension pin, bush, joint or bearing: excessively worn
ADVISORY
Occurrences: 80
Brake hose ferrules: excessively corroded
ADVISORY
Occurrences: 77
Tyre tread depth not in accordance with the requirements
ADVISORY
Occurrences: 66
Brake disc or drum: insecure, fractured or otherwise likely to fail
ADVISORY
Occurrences: 60
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 46
Vehicle structure corroded to the extent that: the rigidity of the assembly is significantly reduced
ADVISORY
Occurrences: 41
Serious faults (Top 10)
The strength or continuity of the load bearing structure within 30cm … is significantly reduced or inadequately repaired
FAIL
Occurrences: 46
The aim of a headlamp is not within limits laid down in the requirements
FAIL
Occurrences: 36
A suspension pin, bush, joint or bearing: excessively worn
FAIL
Occurrences: 29
Lamp: missing, inoperative or in the case of a multiple light source more than a half not functioning
FAIL
Occurrences: 27
An obligatory rear fog lamp missing, or a front or rear fog lamp inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 26
Windscreen washers not working or not providing sufficient fluid to clear the windscreen
FAIL
Occurrences: 25
Significant brake effort recorded with no brake applied indicating a binding brake
FAIL
Occurrences: 23
A direction indicator: lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
FAIL
Occurrences: 23
Emissions levels exceed default limits
FAIL
Occurrences: 22
Brake hose ferrules: excessively corroded
FAIL
Occurrences: 18