Porsche 944 MOT Pass Rate
Overall pass rate across all manufacture years, based on 55,329 real MOT test results. Failure rate: 34.8%.
Data from official DVSA MOT testing records
Porsche 944 MOT Reliability Overview
The Porsche 944 is a moderately popular vehicle in the UK, with 55,329 MOT test results recorded in our database spanning 13 manufacture years. It has an overall MOT pass rate of 65.2% and a failure rate of 34.8%, which is slightly above the UK average of approximately 37%.
Based on this data, the Porsche 944 earns a "Good" reliability rating. The average Porsche 944 presents for MOT with approximately 108,976 miles on the clock. Manufacture year matters: 1971 models achieve the highest pass rate at 84.9%, while 1982 models have the lowest at 58.6%. This 26.3 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Porsche 944 is Brakes, affecting 38.1% of all tests. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. The second most common issue is Suspension at 26.1%. Lamps, Reflectors and Electrical Equipment rounds out the top three at 21.4%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
Best Year to Buy
All manufacture years perform similarly at ~79.1%.
Based on 2024 MOT test results only — the most recent data available. "Built" = year of manufacture. Cars need their first MOT at 3 years old, so the newest cars shown are from ~3 years ago.
Bar chart showing pass rate by manufacture year from 1986 to 1991
📈 How Each Vintage Ages
Tracking how each manufacture year's MOT pass rate changes as the car ages. Showing 10 vintages — click year chips to highlight.
Multi-line chart showing how different Porsche 944 vintages degrade over time, from age 3 to 40 years.
Only vintages with 100+ tests in at least 3 different test years are shown. Fleet average is the UK-wide pass rate for all cars at each age.
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Brakes | 52.1% | 28,816 |
| 2 | Lamps, Reflectors And Electrical Equipment | 36.8% | 20,407 |
| 3 | Suspension | 33.1% | 18,318 |
| 4 | Driver's View Of The Road | 11.4% | 6,305 |
| 5 | Tyres | 11.3% | 6,264 |
| 6 | Steering | 7.3% | 4,049 |
| 7 | Exhaust, Fuel And Emissions | 6.3% | 3,491 |
| 8 | Body, Structure And General Items | 4.3% | 2,396 |
| 9 | Seat Belts And Supplementary Restraint Systems | 3.8% | 2,087 |
| 10 | Noise, Emissions And Leaks | 3.3% | 1,832 |
| 11 | Visibility | 3.2% | 1,774 |
| 12 | Body, Chassis, Structure | 3.1% | 1,708 |
| 13 | Non-component Advisories | 1.7% | 966 |
| 14 | Registration Plates And Vin | 1.5% | 846 |
Failures per 10,000 Miles
avg. 108,976 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Brakes | 4.78 | 52.1% | 28,816 |
| Lamps & Electrical | 3.38 | 36.8% | 20,407 |
| Suspension | 3.04 | 33.1% | 18,318 |
| Visibility | 1.34 | 14.6% | 8,079 |
| Tyres | 1.04 | 11.3% | 6,264 |
| Body & Structure | 0.68 | 7.4% | 4,104 |
| Steering | 0.67 | 7.3% | 4,049 |
| Emissions & Exhaust | 0.58 | 6.3% | 3,491 |
| Seat Belts | 0.35 | 3.8% | 2,087 |
| Noise, emissions and leaks | 0.30 | 3.3% | 1,832 |
| Non-component advisories | 0.16 | 1.7% | 966 |
| Registration Plates and VIN | 0.14 | 1.5% | 846 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Porsche 944 has 108,976 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Porsche 944 has a mileage-adjusted failure rate of 3.19% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Porsche 944 MOT Data
The Porsche 944 is a moderately popular vehicle in the UK, with 55,329 MOT test results recorded in our database spanning 13 manufacture years. It has an overall MOT pass rate of 65.2% and a failure rate of 34.8%, which is slightly above the UK average of approximately 37%.
For Porsche 944 owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on brakes and suspension for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific 944 is likely to perform.
Brakes — 38.1% of failures
Brakes issues account for 38.1% of MOT failures on the Porsche 944. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Suspension — 26.1% of failures
Suspension issues account for 26.1% of MOT failures on the Porsche 944. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Lamps, Reflectors and Electrical Equipment — 21.4% of failures
Lamps, Reflectors and Electrical Equipment issues account for 21.4% of MOT failures on the Porsche 944. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Frequently Asked Questions
What is the MOT pass rate for the Porsche 944?
Based on 55,329 MOT tests in our database, the Porsche 944 has an overall pass rate of 65.2% (34.8% fail rate).
What are the most common MOT failures on a Porsche 944?
The top 3 reasons a Porsche 944 fails its MOT are: 1. Brakes (38.1%), 2. Suspension (26.1%), 3. Lamps, Reflectors and Electrical Equipment (21.4%). Check these areas before booking your MOT.
Is the Porsche 944 reliable?
With a 34.8% MOT failure rate, the 944 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Porsche 944?
Based on failure data, focus on: Brakes (38.1%); Suspension (26.1%); Lamps, Reflectors and Electrical Equipment (21.4%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.