2011 BMW 520 2.0L Diesel · CP11 FJF

Front lower suspension ball‑joint play has been flagged in two consecutive MOTs (2024 and 2025) and an oil‑seal leak was noted in the latest test, indicating that wear on the front sub‑frame and engine‑bay sealing is the most pressing mechanical concern despite the vehicle passing each inspection. The 2025‑10‑23 pass, accompanied by advisories for a minor oil leak and a front windscreen chip, shows that while the car remains road‑worthy, the suspension and oil‑containment systems are already showing the early signs of age‑related deterioration. At 159,156 mi the car averages roughly 10,600 mi per year, a mileage rate that sits squarely within the normal band for a fifteen‑year‑old executive saloon. The MOT record is continuous, with annual tests and no significant gaps, suggesting the odometer reading is reliable and the vehicle has been driven consistently rather than stored for long periods. Such a cumulative distance places typical wear on consumables such as bushings, brake pads and tyre tread, and it also means that front suspension components, which have already attracted advisories, may be approaching the end of their service life. When test‑driving, pay particular attention to any clunk or knock when passing over bumps, especially on the nearside and offside front corners, as these are classic symptoms of ball‑joint wear. Observe whether the steering wheel exhibits any looseness or a vague wandering sensation, and check the tyre wear pattern for unevenness that could betray a compromised suspension geometry. Inspect the engine bay for fresh oil stains or a steady drip from the valve‑cover or oil filter housing, and verify that the oil level remains stable after a short drive; an intermittent leak can quickly become a more serious fault if left unchecked. Given the documented advisories, a qualified mechanic should be asked to measure the ball‑joint clearance, inspect the associated bushings and tie‑rod ends, and confirm the source of the oil leak. Budget for possible replacement of the front lower suspension arms or ball joints and for remedial work on the oil seal, as these items are likely to require attention before the next MOT. The windscreen chip, while not currently affecting visibility, should be evaluated for any propensity to propagate, particularly if the vehicle is to be used in adverse weather conditions.