2013 Citroen C4 2.0L Diesel · GF62 PYA

A pattern of electrical and lighting defects is the most prominent theme in this C4's MOT history, alongside a persistent engine oil leak. The most recent test on 4 March 2024 was a pass, but with an advisory noting a front oil leak not considered excessive. This advisory is not isolated: oil seepage from the front of the engine was also flagged at the February 2023 test, suggesting the leak has been present for at least a year and may well have progressed since. More concerning is the sequence of events at the late February 2024 test, where the vehicle initially failed with a major defect for an inoperative or malfunction-indicating engine management warning lamp (MIL), alongside a failed offside rear stop lamp, an untestable headlamp aim, and a non-functioning nearside front dipped beam. These defects point to electrical faults in both the front and rear lighting circuits and a possible engine management issue, all of which warrant closer inspection. Mileage is high relative to the vehicle's age. The current recorded figure of 169,353 miles on a 2013 car equates to roughly 13,000 miles per year on average, which sits at the upper end of typical private use and is more consistent with significant motorway mileage. High-mileage examples of this generation of C4 commonly exhibit accelerated wear on suspension components, particularly front wishbones, anti-roll bar bushes, and front coil springs, as well as elevated wear on clutch assemblies, turbocharger units (on diesel derivatives), and engine oil leaks from the timing chain area. The presence of the recurring front oil leak across multiple tests is consistent with this kind of sustained high-mileage use, and any prospective buyer should anticipate that suspension and drivetrain consumables may be nearer the end of their service life than the MOT record alone might suggest. Given the electrical failures recorded at the February 2024 test, a physical inspection should include a careful check of all exterior lighting, including both dipped beam headlamps, the offside rear stop lamp, and any associated wiring or connector corrosion. Because headlamp aim was untestable at that visit, it is worth confirming that both headlamp units are securely mounted and that the beam pattern can be properly set, as loose adjustment or a warped mounting would have prevented the tester from completing the check. The MIL being inoperative or indicating a fault is a particularly significant item; on a test drive, listen for any irregular idling, hesitation under acceleration, or illuminated engine management lamp once the ignition is switched on, and consider a diagnostic code read prior to purchase. The minor registration plate lamp issue from 2020 is unlikely to be a current concern but indicates that minor electrical items have been recurring throughout the vehicle's life. The front engine oil leak should be examined with the vehicle on a ramp or with undertrays removed to identify its origin. On the PSA 1.6 HDi and similar units common to this era of C4, leaks frequently originate from the timing chain cover, camshaft seals, or the oil filter housing gasket. Check the level and condition of the engine oil on a cold start, look for fresh drips on the subframe and lower engine cover, and observe for any blue smoke from the exhaust on initial start-up. The 2023 advisory on front tyre wear, particularly the inner edge wear noted on the offside front, suggests potential tracking misalignment, worn suspension bushes, or top mount deterioration; on a test drive, listen for clonks or knocks over uneven surfaces, particularly at low speed, and feel for any vagueness in steering response or pulling to one side under braking. The 2020 advisory on rear brake pad wear should prompt a visual inspection of remaining pad material and disc condition, as pads on a high-mileage vehicle of this age are likely to have been replaced since, but the rear calipers and sliders should be checked for free movement to prevent uneven wear recurring.