1977 Porsche 924 MOT Pass Rate
Pass rate for 924 models manufactured in 1977, based on 100 real MOT test results.
Data from official DVSA MOT testing records
1977 Porsche 924 MOT Analysis
The 1977 Porsche 924 has an MOT pass rate of 73.0% based on 100 tests — above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 59,804 miles on the odometer. With a 27.0% failure rate, the 1977 924 is rated as "Very Good" for MOT reliability.
The leading cause of MOT failure for the 1977 Porsche 924 is Suspension, responsible for 1.0% of failures. 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 range from £200–500. Visibility is the second most common issue at 1.0%.
Top failures specific to 1977 models only. The overall 924 page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Suspension | 1.0% | 1 |
| 2 | Visibility | 1.0% | 1 |
Failures per 10,000 Miles
avg. 59,804 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.
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| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Suspension | 0.17 | 1.0% | 1 |
| Visibility | 0.17 | 1.0% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1977 Porsche 924 has an MOT pass rate of 73.0% based on 100 tests — above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 59,804 miles on the odometer. With a 27.0% failure rate, the 1977 924 is rated as "Very Good" for MOT reliability.
If you own or are considering buying a 1977 Porsche 924, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to suspension: 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. At 59,804 average miles, these vehicles are in the mid-range where component wear starts to become a factor.
Suspension — 1.0% of failures
Suspension issues account for 1.0% of MOT failures on 1977 Porsche 924 models. 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.
Visibility — 1.0% of failures
Visibility issues account for 1.0% of MOT failures on 1977 Porsche 924 models. Visibility failures relate to the windscreen, wipers, washers, mirrors, and view-obstructing damage. Cracks in the windscreen swept area, ineffective wipers, or empty washer bottles are common causes. Typical repair costs: £10–300. Pre-MOT check: Check the windscreen for chips and cracks — damage larger than 10mm in the driver's swept area or 40mm elsewhere will fail. Test washers and wipers. Ensure both door mirrors are intact and adjustable.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.