2016 Porsche Cayman 3.4L Petrol · LK16 HBJ

A recent concentration of mechanical failures and advisories marks a shift in this vehicle's roadworthiness profile following several years of clean inspections. While the car passed its most recent test on 27 January 2026, this followed a failure just five days earlier due to excessive exhaust carbon monoxide emissions after a fast idle. This failure was accompanied by a major defect regarding an excessively worn offside front lower suspension arm ball joint and an advisory for a slightly distorted nearside front road wheel. These recent issues contrast with the previous years of recorded passes, indicating that components are beginning to reach the end of their functional life or have suffered from specific wear patterns. The recorded mileage of 25,700 miles over approximately ten years represents a very low annual accumulation of roughly 2,570 miles. Such a low usage pattern often means the vehicle spends significant periods stationary, which can impact the integrity of rubber components. This is evidenced by the 2025 MOT record, which flagged multiple advisories for tyres showing signs of cracking or perishing across the nearside rear, offside front, and nearside front. While low mileage reduces wear on the drivetrain and engine internals, it can lead to the degradation of tyres and suspension bushings due to age and lack of movement rather than physical tread wear. Prospective buyers should pay close attention to the steering and suspension geometry during a test drive. Given the recent failure of the offside front lower suspension arm ball joint and the advisory for a distorted nearside front road wheel, it is essential to check for any pulling to one side under braking or steady acceleration. Listen for any knocking, clunking, or irregular clicking noises when navigating uneven road surfaces or turning the steering wheel at low speeds, as these are common symptoms of worn ball joints or damaged suspension linkages. The distortion of the road wheel also warrants a physical inspection for any visible deformation or vibrations felt through the steering column at motorway speeds. The recent exhaust emissions failure requires further investigation to ensure the fault was fully rectified and not a symptom of a deeper engine management or sensor issue. During the test drive, monitor the engine idling for any roughness or hesitation and check for any unusual smells or visible smoke from the exhaust. Additionally, because the 2025 records highlighted multiple tyres perishing due to age, verify that all four tyres are relatively recent and free from sidewall cracking, regardless of how much tread remains. Ensuring the suspension components have been replaced with high-quality parts is critical to maintaining the handling characteristics expected of this model.