2021 Citroen C3 Aircross Shine + P-Tech S/S 1.2L Petrol · SO21 JRZ

A consistent pattern of brake-related advisories across two of the three recorded MOT tests defines the mechanical story of this Citroen C3 Aircross, and that history is worth weighing carefully. The most recent test on 16 June 2026 recorded a pass alongside two advisories, one for exhaust corrosion and a second noting that the rear brake discs are worn, pitted or scored though not seriously weakened. Looking further back, the 2024 test flagged a broadly similar issue with all discs showing slight corrosion and scoring, while the 2025 test was entirely clean with no advisories recorded. The recurrence of disc-related advisories in 2024 and again in 2026 suggests that brake disc condition has not stabilised and is likely to require closer attention, particularly as the vehicle continues to age. The 2025 clean result sits between two advisory-flagged tests, indicating the issue is not consistently critical but is persistent enough to monitor. With a recorded mileage of 14,762 miles against an age of approximately five years, this C3 Aircross has been covering only around 2,950 miles per year, which is notably low for its age. The MOT history shows tests in 2024, 2025 and 2026, and the low annual mileage figure is consistent across the period rather than reflecting a single large gap or a sudden surge in use. From a mechanical standpoint, low annual mileage typically results in slower wear of friction components such as brake pads, clutches and tyres, but it can also accelerate corrosion on exposed metal surfaces and lead to drying or stiffening of rubber and plastic components. The exhaust corrosion advisory already noted is consistent with that pattern, and a brake disc that has pitted despite low mileage is most often a sign of surface oxidation from limited use rather than wear from heavy braking. For a prospective buyer, the brake disc advisories are the single most important area to investigate physically. On inspection, the discs should be checked for visible scoring, lipping at the outer edge and any blueing or hot spots, and the rear discs in particular should be measured for remaining thickness, as pitted surfaces may continue to deteriorate even if not yet seriously weakened. A test drive should include firm brake applications from moderate speed to check for vibration through the pedal or steering, any pulling to one side under braking, and unusual grinding or rubbing noises that could indicate the pitted surface is now affecting pad contact. The absence of a brake judder complaint in the record does not rule out worsening condition since the 2024 test, so a physical check is essential. The exhaust corrosion advisory also warrants a close visual inspection, particularly at the rear silencer and any box joints, as surface corrosion tends to progress once started. On the test drive, listen for any exhaust ticking that changes with engine speed, which can indicate a blowing joint or cracked mounting, and feel for any unexpected vibration under the vehicle. Beyond these flagged items, pay attention to suspension refinement over uneven road surfaces, as low-mileage cars can develop stiff or cracked bushes and top mounts through age rather than use, and check that the steering remains precise without knocks or clonks over speed bumps. Given the consistent low usage and the recurrence of brake disc advisories, a thorough pre-purchase inspection focusing on brake disc measurement, exhaust integrity and suspension condition would be advisable.