2011 BMW 520 2.0L Diesel · LM11 CBF

The most recent MOT test on the 2011 BMW 520 occurred on 2025-05-03, where the vehicle passed with a single advisory—front brake discs showing wear but not to a point that compromises structural integrity—and thin inner brake pads requiring attention. While the overall MOT history is predominantly clean, with only a few advisories and one failed test in 2020, the pattern suggests a stable but gradually deteriorating braking system. The repeated warnings about brake disc wear and tyre edge wear indicate a consistent, albeit moderate, level of usage-related friction on components that, if neglected, could escalate into more severe issues such as brake disc warping, pad seizure, or even reduced braking efficiency. The presence of a flexi pipe leak advisory also warrants closer inspection, as persistent fluid loss could lead to catalytic converter damage or structural weakening over time. The vehicle’s recorded mileage of 164,002 miles over roughly fifteen years represents an average annual usage of approximately 10,933 miles, which is on the higher end for a car of this age but not excessively aggressive. The absence of extreme mileage spikes suggests that the owner has likely maintained a steady but not overly demanding driving regimen. However, the significant gap between the 2020 failure—where exposed tyre cords and tread depth below 1.6mm were found—and the subsequent MOTs indicates a period of either reduced use or potential neglect in tyre maintenance. This could imply that the tyres were not rotated or checked regularly, leading to uneven wear patterns and premature failure. The nearside rear tyres in particular have shown consistent edge wear, which may signal alignment or suspension misalignment issues that could worsen with continued use. For a prospective buyer, the most critical areas to inspect are the braking system and suspension, given the recurring advisories. On a test drive, listen for uneven brake pedal travel, a spongy or pulsating feel during braking, or excessive noise from the rear axle—these could indicate warped discs, binding calipers, or loose backing plates, as seen in the 2023 MOT. Check for any clunking or rattling in the suspension, particularly around the lower control arms, as the slight play in the ball joints recorded in 2023 may develop into more pronounced misalignment or component failure if ignored. Visually inspect the brake discs for excessive pitting, cracking, or uneven wear, and ensure the pads are not glazed or stuck. The flexi pipe leak should be addressed promptly to prevent fluid loss, which could lead to engine or exhaust system damage. Additionally, verify that the tyres have sufficient tread depth and no signs of dry rot or sidewall damage, as the history suggests past edge wear and potential underinflation. Beyond the mechanical checks, a thorough physical inspection is recommended due to the vehicle’s age and moderate mileage. Check the tyre sidewalls for signs of perishing or cracking, which can weaken the rubber and compromise safety, especially if the tyres have been stored for extended periods. Inspect the battery terminals for corrosion and ensure the 12V system is functioning correctly, as older vehicles are more prone to battery failure from prolonged standing or low demand. The engine oil and coolant should be checked for freshness, as fluid degradation over time—even without mileage—can lead to engine wear or overheating. Finally, verify that the service book contains records for oil changes, brake servicing, and suspension maintenance, as the advisories suggest these areas may require attention. If the vehicle has been driven primarily in mild conditions, the exhaust emissions system may not be a concern, but a professional inspection of the catalytic converter and oxygen sensors is advisable to ensure compliance with current regulations.