Porsche Boxster S-a MOT Pass Rate
Overall pass rate across all manufacture years, based on 59 real MOT test results. Failure rate: 5.1%.
Data from official DVSA MOT testing records
Porsche Boxster S-a MOT Reliability Overview
The Porsche Boxster S-a is a rare vehicle in the UK, with 59 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 94.9% and a failure rate of 5.1%, which is well above the UK average of approximately 37%.
Based on this data, the Porsche Boxster S-a earns a "Excellent" reliability rating. The average Porsche Boxster S-a presents for MOT with approximately 41,741 miles on the clock. The 2011 manufacture year performs best with a 93.5% pass rate.
The most common MOT failure for the Porsche Boxster S-a is Tyres, affecting 3.4% of all tests. 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. The second most common issue is Lamps, reflectors and electrical equipment at 1.7%. Suspension rounds out the top three at 1.7%. 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
Pass Rate by Manufacture Year
* 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 | Tyres | 3.4% | 2 |
| 2 | Suspension | 1.7% | 1 |
| 3 | Lamps, Reflectors And Electrical Equipment | 1.7% | 1 |
| 4 | Brakes | 1.7% | 1 |
Failures per 10,000 Miles
avg. 41,741 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 | 0.81 | 3.4% | 2 |
| Suspension | 0.41 | 1.7% | 1 |
| Lamps & Electrical | 0.41 | 1.7% | 1 |
| Brakes | 0.41 | 1.7% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Porsche Boxster S-a has 41,741 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 Boxster S-a has a mileage-adjusted failure rate of 1.22% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Porsche Boxster S-a MOT Data
The Porsche Boxster S-a is a rare vehicle in the UK, with 59 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 94.9% and a failure rate of 5.1%, which is well above the UK average of approximately 37%.
For Porsche Boxster S-a owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on tyres 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 Boxster S-a is likely to perform.
Tyres — 3.4% of failures
Tyres issues account for 3.4% of MOT failures on the Porsche Boxster S-a. 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.
Lamps, reflectors and electrical equipment — 1.7% of failures
Lamps, reflectors and electrical equipment issues account for 1.7% of MOT failures on the Porsche Boxster S-a. 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 — 1.7% of failures
Suspension issues account for 1.7% of MOT failures on the Porsche Boxster S-a. 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 Boxster S-a?
Based on 59 (based on limited data) MOT tests in our database, the Porsche Boxster S-a has an overall pass rate of 94.9% (5.1% fail rate).
What are the most common MOT failures on a Porsche Boxster S-a?
The top 3 reasons a Porsche Boxster S-a fails its MOT are: 1. Tyres (3.4%), 2. Lamps, reflectors and electrical equipment (1.7%), 3. Suspension (1.7%). Check these areas before booking your MOT.
Is the Porsche Boxster S-a reliable?
With a 5.1% MOT failure rate, the Boxster S-a is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Porsche Boxster S-a?
Based on failure data, focus on: Tyres (3.4%); Lamps, reflectors and electrical equipment (1.7%); Suspension (1.7%). 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.