2011 Ford C-MAX 1.6L Diesel · ST54 PLS

The most recent MOT test conducted in May 2026 resulted in a pass, but the vehicle's inspection history reveals a concerning trend regarding structural corrosion. While the vehicle has consistently passed its annual tests, the frequency and nature of the advisories suggest a progressive deterioration of the chassis and suspension components. Specifically, the recurring advisories for corrosion on both the front and rear sub-frames, as well as the rear inner suspension component mounting areas, indicate that the structural integrity of the underbody is being actively monitored by examiners. This is not a stable maintenance profile; rather, it shows a gradual accumulation of corrosion-related defects that have persisted and expanded over several years. With a recorded mileage of 95,859 over approximately 15 years, this Ford C-Max has averaged roughly 6,400 miles per year. This level of usage is considered low to moderate, which typically implies less mechanical wear on the engine and drivetrain compared to high-mileage vehicles. However, for a vehicle of this age with relatively low annual mileage, the primary mechanical concerns shift from component fatigue due to use to degradation due to time and environmental exposure. Low-mileage vehicles that are driven infrequently are often more susceptible to the types of issues seen here, such as progressive oxidation of metal components and the perishing of rubber elements like suspension bushes and brake hoses. A prospective buyer must prioritize a thorough inspection of the vehicle's underside. The repeated advisories for sub-frame corrosion and worn rear suspension arm pins or bushes are significant. During a test drive, you should listen intently for any knocking, clunking, or squeaking noises from the rear of the vehicle, especially when driving over uneven road surfaces or speed bumps, as these are classic symptoms of perished bushes or loose suspension components. Furthermore, the mention of corrosion on the rear brake hose ferrules in previous years suggests that the braking system's flexibility and integrity should be scrutinized. Check for any signs of fluid weeping around the calipers or hoses and ensure the brake pedal feel is firm and consistent, rather than spongy. In addition to the structural concerns, the history of windscreen damage and tyre wear patterns warrants attention. While the windscreen chips are currently noted as minor, they can quickly escalate into large cracks due to temperature fluctuations. Regarding the tyres, the history of inner edge wear suggests potential alignment issues, likely stemming from the worn suspension components already identified. You should check all four tyres for even tread wear and inspect the sidewalls for any signs of perishing or cracking, which is common in older vehicles even if the tread depth remains sufficient. Given the age and the documented corrosion, it is highly recommended to have a specialist perform a detailed underside inspection to determine if the sub-frame corrosion has progressed from a surface issue to a structural one that could lead to an MOT failure in the near future.