2011 Porsche Cayenne 3.0L Diesel · R444 ABA

A recurring point of attention is the corrosion affecting the rear brake back plates, noted in four consecutive MOTs, with the most recent advisory in August 2024 describing the plates as “corroded but not seriously weakened.” The 2026‑10‑08 test was passed, yet it added a rear brake disc wear advisory, indicating that while the vehicle remains road‑worthy, the rear braking assembly is showing progressive wear and rust that has not yet reached a failure threshold. At 126,411 mi the car averages roughly 8,400 mi per year, a mileage rate that sits comfortably within normal usage for a fifteen‑year‑old Porsche Cayenne. The MOT history shows no significant gaps, suggesting the vehicle has been regularly tested and driven throughout its life. This level of cumulative mileage will naturally contribute to wear on high‑stress components such as brake discs, suspension arms and tyre tread, especially on a performance‑oriented chassis where braking and handling loads are higher than on standard family cars. When inspecting the rear brakes, feel for any pulsation or sponginess in the pedal, listen for squeal or grinding that may indicate thinning disc material, and examine the back plates for surface rust, cracks or loosened mounting bolts. Uneven braking or a pull to one side can signal that the corroded plates are compromising the caliper mounting integrity, and replacement of the affected back plates and possibly the discs should be anticipated within the near term to avoid a future failure. The rear lower suspension arms were flagged for corrosion in the 2024 MOT, a condition that can progress to weakened mounting points if left unchecked. During a road test, listen for clunking noises over bumps and assess whether the vehicle exhibits any wandering or a vague looseness in rear steering response. Visual inspection of the arm housings and bushings for rust pitting, cracked paint or excessive play is advisable, and any signs of structural weakening should prompt a professional assessment and likely replacement to maintain safe handling characteristics. Additionally, the 2022 tyre advisory about the off‑side rear tyre being close to the legal limit warrants a thorough tyre inspection for tread depth, sidewall integrity and uniform wear before committing to purchase.