2009 Porsche Cayenne 3.0L Diesel · PA09 RSA

The defining mechanical story of this 2009 Porsche Cayenne is one of largely clean roadworthiness across its recorded test history, with only a single minor failure and one advisory to its credit. Seven recorded tests between 2018 and 2025 returned pass results, and the most recent test on 10 December 2025 passed with only a small crack noted in the driver's windscreen. The sole failure occurred back in September 2019, due to the windscreen washer providing insufficient washer fluid, a trivial fluid-top-up item that was clearly resolved, as the car passed at the same test location on the same date once remedied. The complete absence of structural, corrosion, brake, suspension, or exhaust advisories over a vehicle now approaching 17 years of age is a notably quiet record, though MOT testing alone cannot confirm the underlying mechanical condition of components that have not yet reached a wear threshold. Against an age of approximately 17 years and 97,606 recorded miles, the annual accumulation works out at roughly 5,742 miles per year, which is low for a vehicle of this vintage and category. There are visible gaps in the testing record, most notably between the 2018 pass and the 2019 test, and between late 2022 and late 2025, with no entries recorded for 2023 or 2024 until the January 2024 test. The latter gap could reflect either a delay in returning the vehicle to the road after a lay-up period or simply a later-than-usual annual test, but the 2022-to-2024 spacing is wider than the typical 12-month MOT cycle. Lower recorded mileage over such a long period can mean reduced wear on major drivetrain components, but for any Porsche of this generation it also warrants particular attention to items that degrade with time rather than use, such as rubber boots, seals, and age-related component fatigue. For a prospective buyer, the absence of any advisories relating to suspension arms, coil springs, brake pipes, or underbody corrosion is reassuring on paper, but it should not be taken as confirmation that these areas are sound. On a test drive, listen carefully for clonks or knocks from the front suspension over speed humps and uneven surfaces, as the front lower wishbones, upper arms, and anti-roll bar drop links are common wear points on the first-generation Cayenne and can deteriorate quietly between tests. Check for any pulling under braking, vibration through the steering wheel, or a soft or long-travel brake pedal, which could indicate binding calipers, warped front discs, or air ingress in the brake system, even though none of these have yet been flagged. Inspect the wheels from behind for uneven pad wear and verify that the discs have an adequate friction surface on both edges. Given the vehicle's age and the windscreen advisory on the most recent test, it is also worth inspecting the windscreen chip or crack for any propagation, as a crack within the driver's swept area can quickly escalate to a future failure if it extends beyond the permitted tolerance. Beneath the vehicle, look for any fresh oil staining on the engine sump, transfer box, or final drive, and check the coolant hoses and expansion tank for signs of crystallisation or weeping, as these age-related issues would not necessarily appear in an MOT but are relevant to a 17-year-old Porsche. Finally, examine the exhaust system for any blue smoke on start-up, which could indicate valve stem oil seals deteriorating from low running rather than wear, and verify that all warning lights extinguish promptly after ignition, as electronic control units on these vehicles can develop latent faults with age regardless of MOT outcomes.