2015 KIA Sorento 2.2L Diesel · DP63 DON

The most recent MOT, carried out on 31 October 2025, was passed but carried an advisory noting an oil leak from the rear axle, a condition that has been flagged in the two preceding years. Prior to that, the test on 21 October 2024 recorded a failure for an excessively worn near‑side front suspension arm ball joint, which was accompanied by the same rear‑axle oil‑leak advisory. The fact that the vehicle cleared the subsequent 2025 test suggests that the ball‑joint fault was remedied, yet the persistent rear‑axle leak indicates a recurring issue that has not been fully resolved. Overall the maintenance trend shows an improvement in the suspension area but a static, unresolved leak that warrants further attention. At 71,825 miles the Sorento averages roughly 6,500 miles per annum over its eleven‑year life, a usage pattern that sits comfortably within normal private‑car expectations. The mileage is not excessive, implying the car has not been subjected to heavy‑duty or high‑speed touring, but the relatively low annual distance also raises the possibility of periods of extended idle or storage. Such standing periods can accelerate rubber ageing, promote brake‑disc corrosion and allow moisture to settle in the differential, potentially exacerbating the noted oil leak. For a prospective buyer the foremost inspection point should be the rear differential. Look for fresh oil stains beneath the vehicle, especially after a short drive, and verify the condition and level of the differential oil at the fill plug – low level or a milky appearance points to internal wear or water ingress. While on a test drive, listen for a low‑frequency whining or grinding that varies with load, and feel for any shudder when applying throttle from a standstill. The front suspension should be checked for any play in the ball joint and for clunking over bumps; a visual inspection of the ball‑joint caps and a firm push‑rod test will confirm whether the replacement was correctly fitted and whether the bushings remain sound. Given the vehicle’s age, independent of the recorded defects, a thorough visual and tactile appraisal is advisable. Examine the tyre sidewalls for cracking, dry rot or uneven wear that could indicate mis‑alignment from the earlier suspension work. Inspect the brake discs for surface rust, scoring or glazing, and verify that the calipers move freely without sticking – a common issue on cars that sit for long periods. Test the 12‑volt battery voltage and check for corrosion on the terminals, as an eleven‑year‑old battery may be near the end of its service life. Finally, confirm that the engine oil, coolant, brake fluid and power‑steering fluid have been changed in line with calendar intervals, since fluid degradation can occur even with modest mileage. Addressing these points will give a clear picture of the Sorento’s current roadworthiness and any imminent maintenance that may be required.