2010 Citroen C3 1.6L Diesel · ML10 PXX

A chronic pattern of corrosion-related advisories across the rear structure defines the roadworthiness profile of this 2010 Citroen C3, with the trend visibly worsening as the recorded mileage approaches 137,300 miles. The most recent test on 29 May 2026 produced a pass, but only after the same vehicle was recorded as a failure on the same date, and both entries carried an identical cluster of advisories covering rear sub-frame corrosion, rear exhaust mounting defects, towbar component wear, general rear structural corrosion, and worn rear sub-frame pins or bushes on both sides. Earlier tests in 2024 and 2025 noted light rust on the rear chassis and rear axle beam, and the 2022 test recorded surface corrosion on rear exhaust mountings and suspension mounting areas, confirming that the deterioration has been progressing steadily rather than appearing suddenly. The single recorded failure apart from the 2026 duplicate was in May 2023 for headlamp aim being too high on both sides, a straightforward adjustment issue rather than a structural or wear-related defect. Overall, the rear-end corrosion trajectory is the dominant concern, while the rest of the recorded defects are comparatively minor. With sixteen years on the road and 137,300 recorded miles on the odometer, this C3 has accumulated roughly 8,581 miles annually, which sits comfortably within the typical range for a car of its age and suggests reasonably consistent use rather than long periods of standing or unusually high mileage clustering. The testing record shows annual entries from 2021 through 2026 with no extended gaps, indicating the vehicle has remained in regular use and subject to continuous MOT scrutiny throughout this period. A mileage pattern of this nature points to normal wear on consumables such as brake pads, discs, tyres, and suspension components, but it does not in itself indicate how those items have been serviced or replaced between tests. The fact that advisories have progressively escalated in severity from light surface corrosion in 2022 to sub-frame corrosion with structural relevance concerns by 2026 suggests that age and mileage are taking a measurable toll on the underbody, consistent with a vehicle that has been exposed to typical British winter road conditions over many years. For a prospective buyer, the rear sub-frame and associated mounting points warrant close physical inspection beneath the vehicle, ideally with the car raised on a ramp or over a pit so that the extent of corrosion can be assessed beyond what an MOT tester observes from underneath with a lamp. Particular attention should be paid to the sub-frame mounting brackets, the rear axle beam, suspension arm pins and bushes on both sides, and the general integrity of the load-bearing structure, as the recurring advisories suggest that these areas are thinning and may eventually reach a point where structural rigidity is significantly reduced. On a test drive, listen for any clonking or knocking from the rear suspension over bumps, which would indicate that the worn sub-frame pins or bushes flagged in the latest test have progressed to allow excessive movement, and feel for any vagueness or wandering from the rear end over uneven surfaces that could suggest structural flex rather than simple bush wear. The towbar component wear and rear exhaust mounting defect should also be inspected visually, as a loose exhaust can produce rattling under acceleration or over rough roads and an excessively worn towbar could indicate tow loads beyond the vehicle's typical use. The front suspension recorded its own advisory history, with nearside front lower suspension arm pin or bush wear noted in 2025 and offside front lower ball joint play flagged in 2021, so a thorough check of both front lower arms for play, torn gaiters, or perished bushes is advisable, particularly by rocking each front wheel laterally and vertically while raised. The 2023 headlamp aim failure on both sides, while a presentable-at-test repair, is worth verifying by parking the car on level ground facing a wall at night to confirm that the beam pattern sits at or just below the horizontal cutoff line and does not dazzle oncoming drivers. Brake feel should be assessed for any judder or pulling, and the pedal travel checked for firmness, given the mileage. Finally, the persistent underbody corrosion theme means that any prospective purchase should be accompanied by a detailed look at brake pipes, fuel lines, and sill integrity, as these areas share the same exposure conditions that have already degraded the rear structure, and a borescope or careful hand inspection of these hidden components can reveal whether further remedial welding or component replacement will be required to keep the vehicle roadworthy beyond the next test.