2015 Porsche Cayenne 3.0L Diesel · LM65 GKY

The maintenance trend for this Cayenne has shifted from stable to worsening, as evidenced by the December 2025 test outcomes. After recording clean passes in 2022 and 2024, the vehicle failed its December 2025 test at 68,194 miles due to ineffective wipers and a nail in the offside rear tyre. A subsequent pass on the same day still flagged a nearside rear tyre worn close to the legal limit and a strong advisory for a nearside front hydraulic leak at the gearbox oil cooler. The tester also noted a nearside rear child seat obstructing the adult belt inspection, a recurring issue previously seen in December 2023. These lingering defects suggest basic consumable upkeep was neglected recently. Covering 68,194 miles over eleven years equates to roughly 6,199 miles annually, reflecting unusually light use typical of a secondary vehicle. Mileage accumulation remained steady between December 2022 and November 2024, adding around 6,000 miles each year. The pattern shifted dramatically between November 2024 and December 2025, with the odometer jumping 10,324 miles in just over twelve months. This sudden increase in usage contrasts sharply with the vehicle's earlier low-mileage lifestyle and implies a change in ownership or commuting habits. A physical inspection must prioritize the nearside front hydraulic leak at the gearbox oil cooler, as fluid degradation can lead to costly gearbox damage or overheating. The persistent nearside rear tyre edge wear points to potential suspension misalignment or worn suspension bushes, requiring a thorough check of the rear axle geometry. The repeated obstruction of the adult seatbelt by a child seat raises concerns about hidden belt fraying or compromised mounting points; inspectors should demand the child seat's removal to verify the belt's structural integrity. Given the recent spike in mileage, examining the brake discs and pads for uneven wear is also prudent.