At a Glance
The Porsche Cayman 987c has 3 identified problems that occur more often than the UK average, with Spark ignition emissions above threshold being the most reported. Electrical is the most common MOT failure category. Based on 92K MOT tests from DVSA data.
Problems are patterns in the DVSA data that occur significantly more often on this model than the UK average — confirmed at 99% statistical confidence. Read how we calculate MOT pass rates and problems →
Below: the full MOT-data picture for the Porsche Cayman 987c — MOT pass rate vs the UK average, common problems vs UK fleet patterns, the most likely MOT failures by frequency, fault occurrence by mileage band, and pass/fail trends. All numbers drawn from DVSA records.
Porsche Cayman 987c MOT Pass Rate
Across 92K MOT tests from DVSA data, the Porsche Cayman 987c (2006–2012) has a fail rate of 15.6%.
UK average fail rate (2006–2012): 39.0%
Common Porsche Cayman 987c Problems
Owner-submitted reports plus patterns we've identified across 559 million UK MOT tests. Each MOT-derived item below — whether tagged as a Problem, Wear & Tear or Consumable — shows up noticeably more often on this generation than across the UK fleet, which is why it's here. Owner reports are pinned to the top by default; use the sort and filter pills below to view a specific tier or change the order.
Spark ignition emissions above threshold
641
occurrences
Headlamp defect (no aim check)
101
occurrences
Fuel cap damaged or missing
76
occurrences
Tell Us About Your Problem
Help other Porsche Cayman 987c owners — report a problem and we'll add it to the database
Tell Us About Your Problem
Help other Porsche Cayman 987c owners — report a problem and we'll add it to the database
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Problems by mileage
Common problems, MOT failures and advisories on the Porsche Cayman 987c, grouped by the mileage they typically appear at.
385 distinct problems · 87,382 total occurrences in current filter
Filter by fuel and engine size to narrow down to your car.
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Advisory items are MOT tester observations. Frequency can be influenced by driving style and usage patterns.
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Other Porsche Cayman Generations
Frequently Asked Questions
What are the most common Porsche Cayman 987c problems?
Based on DVSA MOT data for the Porsche Cayman 987c (2006–2012), we have identified 3 common problems. The most frequently reported is "Spark ignition emissions above threshold". Electrical is the most common MOT failure category.
How reliable is the Porsche Cayman 987c?
This generation has 92K MOT tests on record with a 15.6% fail rate. A fault is flagged as a "Common Problem" only when it occurs significantly more often on this model than the UK average, confirmed at 99% statistical confidence.
What commonly fails the MOT on a Porsche Cayman 987c?
There are 122 distinct MOT failure types recorded for the 987c (2006–2012), grouped by the mileage these failures typically occur. See the Common MOT Failures section on this page.
Can I report a problem with my Porsche Cayman 987c?
Yes — use the "Tell Us About Your Problem" form on this page. Your report helps other Porsche Cayman owners spot problems early. All submissions are reviewed before being added to the public database.
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