2010 Citroen C5 2.0L Diesel · GD10 AOG

The defining mechanical story of this 2010 Citroen C5 is one of recurrent front-end drive shaft and rear brake irregularities across a relatively short MOT history, with two failures in the space of a year prior to a clean pass at the most recent test on 10 February 2026. Both recorded failures in 2024 and 2025 centred on split or missing offside front constant velocity boots, with the 2025 test also flagging an obviously incorrect headlamp beam image, and the 2024 test additionally noting an offside front position lamp failure alongside a nearside rear service brake that was binding excessively. These are not isolated items: a 2023 advisory noted a slight leak from the offside front outer CV boot, demonstrating the issue was developing over at least two test cycles before the component ultimately failed. The 2024 fail's binding rear brake is mirrored by a 2021 advisory for a nearside rear service brake binding but not excessively, suggesting persistent caliper or mechanism sluggishness rather than a one-off event. Two further advisories in February 2025 noted worn rear pads and discs plus low front tyres, indicating the friction material was approaching its replacement threshold even before the pass. Against a vehicle age of sixteen years, the recorded 101,982 miles equates to approximately 6,374 miles annually, which is broadly typical for the cohort and points to a mix of regular driving with periods of lighter use rather than sustained high-mileage motorway work or long-term storage. The test-to-test gaps are consistent with this: the vehicle has been presented annually without any prolonged absence from testing that would imply extended lay-up, and there are no unusual mileage jumps between consecutive tests to suggest clocking concerns or erratic use. Mechanically, this annual mileage profile would be expected to produce wear on consumables such as brake friction material, tyres, and CV boots, which corresponds directly to the categories of defect flagged in the MOT record. For a prospective buyer, the priority areas on inspection are the front driveline and the rear braking system, given their prominence in the record. The CV boot issue is recurring on the offside, so the joint itself should be inspected for any residual grease contamination, torn rubber, or clicking on full-lock turns at low speed; a road test should be performed with the windows down listening for a rhythmic knocking from the front as the wheel is turned against lock. The rear brake binding history warrants a thorough check of the nearside rear caliper for free slider movement, handbrake cable retraction, and any uneven disc wear or hot-spots after a short drive, as binding calipers frequently return even after an apparently successful repair. The 2025 advisories for rear pads and discs being worn and front tyres running low indicate that friction components and tyres were nearing end-of-service life at that test and may now require replacement; uneven tyre wear across an axle would also point to alignment or suspension geometry issues worth a visual check. The headlamp aim failure on the 2025 test should not be dismissed, as it can be symptomatic of a damaged mounting bracket or a failed levelling motor rather than a simple adjustment, and the offside front position lamp failure the year before points to general bulb and electrical condition that benefits from a walk-round inspection of all exterior lamps. Given the vehicle's age, structural and underfloor corrosion should be examined with particular attention to suspension arms, subframe mounting points, and brake line surfaces, as these are common MOT failure points on C5s of this generation. A final pre-purchase road test over varied surfaces including speed humps and uneven tarmac will help reveal any knocking from front suspension bushes or anti-roll bar links, while firm brake pedal feel without sponginess or excessive travel will confirm the hydraulic system has not been compromised by age-related pipe corrosion.