2009 Citroen Grand C4 Picasso 1.6L Diesel · YY59 HFP

Corrosion on the integral body structure presents the most significant long-term mechanical risk for this vehicle, with both nearside and offside sills flagged for corrosion in the December 2022 test. While the most recent MOT passed on 02 December 2022, the record shows a history of significant failures, including dangerous defects regarding tyre tread depth and visible exhaust smoke in 2021, alongside major brake imbalance issues. The mechanical trend indicates a vehicle that has required intervention for both safety-critical components and emissions, though the structural corrosion has remained a consistent advisory. The recorded mileage of 88,292 miles over a 17-year lifespan equates to an average of approximately 5,194 miles per year, which is notably low for a vehicle of this age. Such a low annual accumulation suggests the vehicle has been used for short journeys or has experienced periods of inactivity. Mechanically, this pattern can mean that while drivetrain components may have lower wear than a high-mileage equivalent, other elements such as rubber bushes, seals, and suspension components may be subject to age-related degradation rather than wear-related fatigue. Prospective buyers should pay close attention to the structural integrity of the sills, as the recorded corrosion on the nearside and offside integral body structure can progress if not monitored. During a test drive, it is advisable to inspect the underside of the vehicle for any signs of advancing rust or bubbling paintwork. Furthermore, the previous failure regarding rear brake imbalance on axle 2 necessitates a thorough check of the braking system. Listen for any uneven pulling under braking or a pulsating sensation through the brake pedal, which could indicate sticking calipers or unevenly worn discs. The 2021 failure regarding visible smoke from the diesel particulate filter and ineffective windscreen wipers suggests that emissions systems and peripheral maintenance have been points of concern. On a test drive, observe the exhaust output under acceleration to ensure no smoke is visible and listen for any unusual engine notes that might indicate issues with the exhaust system or DPF regeneration. Additionally, verify the operation of the windscreen wipers and the functionality of all exterior lighting, specifically the registration plate lamp and stop lamps, to ensure previous failures have been fully rectified.