2012 BMW 520 2.0L Diesel · BT62 UED

The most recent MOT test for the 2012 BMW 520 occurred on 2025-05-15, where it passed with a single advisory related to an oil leak, described as not excessive. This follows a notable pattern of maintenance, with the vehicle passing MOTs in 2022, 2023, and 2024 without major defects, aside from the 2024 failure due to a serious fluid leak in the nearside rear shock absorber, which was rectified. The advisory from 2025 suggests a persistent but contained issue, likely stemming from either a worn or compromised oil seal in the suspension system or a failing hydraulic component. The fact that the vehicle has returned to passing status indicates either effective maintenance of the underlying cause or a less severe condition than the 2024 failure, but the recurring nature of the oil-related advisory warrants vigilance. The absence of further failures in the intervening period suggests a stable maintenance trend, though the need for proactive attention to the suspension and potential oil system integrity cannot be overstated. The recorded mileage of 120,145 miles for a vehicle aged 14 years represents a reasonable annual usage rate of approximately 8,582 miles, which is typical for its age and class. This level of mileage does not inherently indicate excessive wear beyond what is expected from normal operation, though it does imply consistent use over the vehicle’s lifespan. The absence of significant mileage gaps or rapid accumulation suggests the car has been driven regularly, which can lead to more pronounced wear on consumables like brake pads, tyres, and suspension components. However, the wear progression observed in the 2023 MOT advisory—tyre wear close to legal limits and edge wear—points to either aggressive driving habits or prolonged periods of heavy load, which could accelerate tyre degradation. For the drivetrain and suspension, this mileage aligns with the potential for gradual wear in seals, bushings, and hydraulic components, particularly in a vehicle of this age and usage profile. Given the MOT history, the prospective buyer should prioritise a thorough inspection of the suspension system, focusing on the nearside rear shock absorber and related components. During a test drive, listen for irregular clunking or knocking noises from the rear suspension, particularly when transitioning between rough and smooth road surfaces, as these may indicate fluid leakage or failing coil springs. Additionally, check for uneven tyre wear patterns, which could correlate with misaligned wheels or suspension misalignment, and inspect the tyres for signs of excessive edge wear or sidewall damage. The oil leak advisory suggests monitoring for persistent oil stains under the vehicle or around the engine bay, which could indicate a failing oil seal or a more complex hydraulic issue in the suspension. If the oil leak persists or worsens, the buyer should consider having the suspension components, including the nearside rear shock absorber, inspected or replaced promptly to prevent further damage to the vehicle’s structural integrity or drivetrain. For the 2012 BMW 520, given its age and the mileage recorded, the buyer should also conduct a comprehensive physical inspection of the vehicle’s standing conditions and fluid systems. Check the tyres for signs of sidewall cracking or perishing, which can occur even with moderate mileage due to prolonged exposure to the elements. Inspect the brake system for signs of corrosion on the discs or binding calipers, particularly if the vehicle has been stored for extended periods, as standing brake components can develop rust and binding. Verify the condition of the 12V battery, ensuring it holds a charge and has no signs of corrosion or physical damage, as older batteries in this age range may struggle to maintain power, especially under load. Lastly, consider the calendar-based servicing of fluids, such as the engine oil and coolant, which should be replaced according to BMW’s recommended intervals, even if the vehicle has not reached the mileage thresholds. A review of the service book or receipts for the last fluid changes would be advisable, as well as a check for any missing or outdated service stamps, which could indicate neglect in routine maintenance. If the vehicle has been driven at a lower annual rate, the wear on consumables like filters and fluids may be less severe, but the buyer should still address the suspension and oil system issues highlighted by the MOT history to ensure long-term reliability.