Porsche 924 Turbo MOT Pass Rate
Overall pass rate across all manufacture years, based on 33 real MOT test results. Failure rate: 51.5%.
Data from official DVSA MOT testing records
Porsche 924 Turbo MOT Reliability Overview
The Porsche 924 Turbo is a rare vehicle in the UK, with 33 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 48.5% and a failure rate of 51.5%, which is significantly below the UK average of approximately 37%.
Based on this data, the Porsche 924 Turbo earns a "Very Poor" reliability rating. The average Porsche 924 Turbo presents for MOT with approximately 49,861 miles on the clock.
The most common MOT failure for the Porsche 924 Turbo is Brakes, affecting 54.5% 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 Lamps, reflectors and electrical equipment at 42.4%. Suspension rounds out the top three at 33.3%. 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
* 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 | Lamps, Reflectors And Electrical Equipment | 78.8% | 26 |
| 2 | Brakes | 72.7% | 24 |
| 3 | Suspension | 33.3% | 11 |
| 4 | Noise, Emissions And Leaks | 15.2% | 5 |
| 5 | Seat Belts And Supplementary Restraint Systems | 15.2% | 5 |
| 6 | Driver's View Of The Road | 12.1% | 4 |
| 7 | Visibility | 9.1% | 3 |
| 8 | Road Wheels | 6.1% | 2 |
| 9 | Steering | 6.1% | 2 |
Failures per 10,000 Miles
avg. 49,861 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 |
|---|---|---|---|
| Lamps & Electrical | 15.80 | 78.8% | 26 |
| Brakes | 14.59 | 72.7% | 24 |
| Suspension | 6.69 | 33.3% | 11 |
| Visibility | 4.25 | 21.2% | 7 |
| Noise, emissions and leaks | 3.04 | 15.2% | 5 |
| Seat Belts | 3.04 | 15.2% | 5 |
| Wheels | 1.22 | 6.1% | 2 |
| Steering | 1.22 | 6.1% | 2 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Porsche 924 Turbo has 49,861 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 924 Turbo has a mileage-adjusted failure rate of 10.33% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Porsche 924 Turbo MOT Data
The Porsche 924 Turbo is a rare vehicle in the UK, with 33 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 48.5% and a failure rate of 51.5%, which is significantly below the UK average of approximately 37%.
For Porsche 924 Turbo owners, these results suggest above-average failure risk — thorough pre-MOT checks are recommended. Focus your pre-MOT checks on brakes and lamps, reflectors and electrical equipment 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 924 Turbo is likely to perform.
Brakes — 54.5% of failures
Brakes issues account for 54.5% of MOT failures on the Porsche 924 Turbo. 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).
Lamps, reflectors and electrical equipment — 42.4% of failures
Lamps, reflectors and electrical equipment issues account for 42.4% of MOT failures on the Porsche 924 Turbo. 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.
Suspension — 33.3% of failures
Suspension issues account for 33.3% of MOT failures on the Porsche 924 Turbo. 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.
Frequently Asked Questions
What is the MOT pass rate for the Porsche 924 Turbo?
Based on 33 (based on limited data) MOT tests in our database, the Porsche 924 Turbo has an overall pass rate of 48.5% (51.5% fail rate).
What are the most common MOT failures on a Porsche 924 Turbo?
The top 3 reasons a Porsche 924 Turbo fails its MOT are: 1. Brakes (54.5%), 2. Lamps, reflectors and electrical equipment (42.4%), 3. Suspension (33.3%). Check these areas before booking your MOT.
Is the Porsche 924 Turbo reliable?
With a 51.5% MOT failure rate, the 924 Turbo is less reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Porsche 924 Turbo?
Based on failure data, focus on: Brakes (54.5%); Lamps, reflectors and electrical equipment (42.4%); Suspension (33.3%). 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.