2017 Porsche Cayman 2.5L Petrol · RO67 XHC

The 2017 Porsche Cayman most recently passed its MOT on 28 November 2025 with no defects or advisories recorded, representing a clean and uninterrupted run of test passes dating back to its first recorded MOT in 2020. The overall maintenance trend is clearly stable, with the only recorded advisories appearing on the 2024 test, where both rear tyres were noted as worn close to the legal limit and showing edge wear at tread depths of 2.9mm and 3.3mm. No further advisories or failures have emerged since, suggesting that these wear concerns were addressed at the time and have not since reappeared in the testing record. A vehicle displaying six consecutive passes with only one advisory cycle is a strong indicator of conscientious ownership and consistent mechanical upkeep. With a recorded mileage of 21,292 miles across nine years, this Cayman averages around 2,366 miles per year, which is exceptionally low even by sports car standards. Such modest annual use raises questions about whether the vehicle has been driven regularly or has spent extended periods standing, perhaps in a garage, on a driveway, or in short-term storage. While low mileage typically preserves mechanical components such as the engine, gearbox, and clutch from wear-related degradation, prolonged periods of inactivity can introduce their own issues. Brake discs may have developed surface corrosion, handbrake mechanisms and caliper pistons can seize or bind from lack of use, tyres may have perished or developed flat spots, and rubber seals throughout the suspension and drivetrain can deteriorate without the benefit of regular flexing under load. Given the clean MOT history but the very low annual mileage, a prospective buyer should carry out a number of physical inspections beyond the official test record. Tyres should be examined carefully for sidewall cracking or perishing associated with age rather than wear, as even tyres with adequate tread depth can be compromised by dry rot after nine years; the production date code on the sidewall should be checked and any tyres over six years old replaced regardless of remaining tread. The 12V battery should be load tested, as low-use vehicles frequently suffer from flat or sulphated batteries, and a fresh battery may be imminent. Brake discs should be inspected for severe corrosion or pitting, particularly around the outer edges and inner faces, and the handbrake operation confirmed to release cleanly without binding. All brake flexihoses and the hydraulic system should be checked for any seepage, and a road test should include firm brake applications from speed to confirm there is no shuddering or uneven retardation indicative of warped or corroded discs. Fluid servicing on a calendar basis is equally important to verify on a low-mileage car of this age, as degradation occurs with time regardless of use. Brake fluid should have been renewed at least every two years regardless of mileage, and the presence of recent brake fluid service evidence in the maintenance history should be confirmed. Coolant, gear oil, and differential fluid are also subject to time-based deterioration, and the service book or specialist receipts consulted for proof of recent attention. The coil springs themselves warrant close inspection for signs of corrosion, as Porsche coil springs are known to suffer from surface rust and eventual fracture, particularly on cars stored in damp conditions. A careful test drive over uneven surfaces should be conducted to listen for any suspension knocks, clonks, or clonking from anti-roll bar bushes, drop links, or wishbone bushes, as these components can deteriorate with age and standing. Finally, the exhaust system, including the mid-mounted silencers and rear section, should be inspected for corrosion or blowing, and a borescope inspection of the intake system considered if there is any doubt about storage conditions.