2009 BMW 520D M Sport BUS Edit A 2.0L Heavy oil · LP59 SFY

The most recent MOT test on 2026-04-25 resulted in a clean pass, marking a positive turnaround from the previous two years, where the vehicle failed with persistent advisories. While the 2025 tests highlighted recurring issues—particularly the offside rear shock absorbers showing light oil misting, front tyre perishing, and an oil leak—these were not present in the latest assessment, suggesting either effective remedial work or a shift in the vehicle’s operational condition. The absence of defects in the past three years indicates a stable maintenance trend, though the 2021 advisory on the near-side front anti-roll bar linkage ball joint dust cover deterioration remains a cautionary note, warranting closer attention to potential play or binding in that area during a test drive. The recorded mileage of 116,836 miles for a 2009 BMW 520 reflects a moderate annual usage rate of approximately 6,873 miles per year, which is within the expected range for its age. The consistency of mileage accumulation over the years—without dramatic spikes or prolonged periods of low usage—suggests steady, if not aggressive, driving conditions. However, the vehicle’s age and the wear observed in the MOT records imply that certain components, particularly brakes, suspension, and tyres, have experienced significant exposure to operational stresses. The front brake advisories from 2021, indicating thin pads and pitted discs, underscore the need for vigilance, as further wear could lead to reduced braking efficiency or even failure under heavy loads. For a prospective buyer, the most critical areas to inspect during a physical examination and test drive include the suspension system, brakes, and tyres. The light misting of oil in the offside rear shock absorbers from 2025 suggests potential internal failure or excessive wear, which could manifest as a loss of damping effectiveness, clunking noises during cornering or over bumps, or a noticeable sag in ride quality. Listen for any unusual suspension clunks or rattles when driving over uneven surfaces, and check for uneven tyre wear patterns, which may indicate misalignment or suspension misalignment. The front tyres showing perishing or cracking in the 2025 MOT advisories warrant immediate attention, as sidewall damage can compromise tyre integrity and safety, particularly at higher speeds. Inspect the tyre tread depth and look for any signs of dry rot or internal separation, as these are critical safety concerns. The brake system should be thoroughly examined, with particular focus on the front discs and pads. Given the 2021 advisories of thin pads and pitted discs, test the braking performance for reduced responsiveness or a spongy pedal feel, which could indicate worn components or warped discs. Inspect the brake discs for corrosion, binding, or excessive glazing, and check the caliper operation for any signs of sticking or binding, which may require hydraulic system servicing. Additionally, verify the condition of the brake fluid reservoir and the overall brake system for leaks or contamination, as brake fluid degrades over time and can lead to reduced effectiveness. The anti-roll bar linkage ball joint dust cover deterioration from 2021 may also cause play or binding in the suspension, so gently shake the vehicle side to side while driving to detect any excessive movement or clunking. Lastly, given the oil leak advisories, ensure the engine bay and undercarriage are dry and free from leaks, and consider a professional inspection of the oil system, including the oil pan and seals, to prevent further contamination of the engine oil. If the vehicle has been stored for prolonged periods, check for standing corrosion on the chassis, exhaust system, and undercarriage, as well as the condition of the 12V battery, which may have degraded from age or disuse.