1990 Porsche Unclassified MOT Pass Rate
Pass rate for Unclassified models manufactured in 1990, based on 80 real MOT test results.
Data from official DVSA MOT testing records
1990 Porsche Unclassified MOT Analysis
The 1990 Porsche Unclassified has an MOT pass rate of 61.3% based on 80 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 104,307 miles on the odometer. With a 38.7% failure rate, the 1990 Unclassified is rated as "Average" for MOT reliability.
The leading cause of MOT failure for the 1990 Porsche Unclassified is Tyres, responsible for 2.5% of failures. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs range from £50–200 per tyre. Suspension is the second most common issue at 1.3%.
Top failures specific to 1990 models only. The overall Unclassified 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 | Tyres | 2.5% | 2 |
| 2 | Suspension | 1.3% | 1 |
Failures per 10,000 Miles
avg. 104,307 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 |
|---|---|---|---|
| Tyres | 0.24 | 2.5% | 2 |
| Suspension | 0.12 | 1.3% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1990 Porsche Unclassified has an MOT pass rate of 61.3% based on 80 tests — around the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 104,307 miles on the odometer. With a 38.7% failure rate, the 1990 Unclassified is rated as "Average" for MOT reliability.
If you own or are considering buying a 1990 Porsche Unclassified, budget for potential repairs before each MOT. Before your MOT, pay particular attention to tyres: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating. With an average mileage of 104,307 miles, these vehicles are in the higher-mileage bracket where wear-related failures become more common.
Tyres — 2.5% of failures
Tyres issues account for 2.5% of MOT failures on 1990 Porsche Unclassified models. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Suspension — 1.3% of failures
Suspension issues account for 1.3% of MOT failures on 1990 Porsche Unclassified 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.