2021 Citroen C5 Aircross Shine + Bluehdi SS 1.5L Diesel · PY71 CSF

A 2021 Citroen C5 Aircross Shine BlueHDi with two recorded DVSA tests, both passing but the most recent on 11 December 2025 carrying a flagged CV joint boot, a TPMS advisory, and tyre-related advisories across all four wheels suggests a car that has remained roadworthy but is beginning to show its age on the consumables and under-bonnet sealing. The 2024 test on 18 November was recorded with no defects at all, so the most recent outcome represents a clear departure from that clean baseline rather than a continuation of a problem pattern. The minor classification on the nearside front outer drive shaft CV boot is the most mechanically significant item, as a split boot allows grease to escape and contaminating moisture and grit to enter the joint, accelerating wear on the inner races. The three tyre advisories and the nail in the offside rear tyre compound the picture, indicating that the contact patches have been worked hard or that rotation and replacement have lagged behind the tread wear pattern. At 52,015 miles against a five-year registration, the C5 Aircross is accumulating just over 10,400 miles annually, which is a fairly typical usage profile for a family-sized diesel SUV of this age and consistent with steady mixed commuting rather than long-term standing or high-mileage motorway work. There are no large gaps in the test record to suggest extended off-road periods, and the absence of any mileage jump between the 2024 and 2025 tests points to continuous but moderate use. For a BlueHDi of this vintage, that mileage range places the timing belt or chain service interval (depending on the specific powertrain variant), the dual-mass flywheel, and the diesel particulate filter well within their working life rather than approaching it, though any turbocharger or EGR issues would more commonly be exposed by short urban cycles than long motorway runs. On inspection, the nearside front outer CV boot should be examined physically for fresh grease around the rim of the joint, cracking of the rubber concertina, and any clicking or vibration on full-lock steering at low speed, which would indicate the joint has already ingested debris. The tyres warrant close scrutiny of the shoulder wear pattern across all four corners, as an even edge-wear pattern typically points to geometry drift rather than simple ageing of the rubber, and a four-wheel alignment check should be factored into any negotiation. The TPMS light being on at the time of test could simply reflect cold weather pressure drop or a depleted sensor battery, so confirm whether the warning is currently illuminated and verify that all four sensors are transmitting through the infotainment menu before purchase. On a road test, listen for a clonking or rhythmic knocking from the front end over speed humps and uneven B-road surfaces, particularly through the MacPherson strut top mounts and the lower control arm bushes, which are known wear items on PSA-platform SUVs of this generation. Feel for any pulling under braking, which on a diesel of this age can indicate binding rear calipers or warped front discs rather than simply pad bedding. Finally, check for diesel-specific telltales including a flashing or persistent glow plug or emissions warning light, any hint of white or blue smoke on a cold start, and a sluggish throttle response that could indicate a tired turbocharger, EGR valve hesitation, or DPF saturation following repeated short journeys.