2013 BMW 520 2.0L Diesel · MT63 AAK

The latest MOT test for the 2013 BMW 520 recorded a passing outcome on 2025-11-06, though it included two persistent tyre-related advisories—both front tyres showing wear close to the legal limit and worn on the edge—indicating a pattern of tyre degradation that has been noted across multiple tests since 2020. While the vehicle has otherwise maintained a clean MOT history with no major failures in the past five years, the recurring tyre advisories suggest a systematic issue that may stem from either underinflation, excessive load distribution, or improper alignment. The failure in 2025-11-05, which included a major defect for mismatched rear tyres, further highlights the need for careful inspection of all tyres, including their tread depth and uniformity, to prevent further roadworthiness concerns. The advisories on edge wear could also imply lateral forces acting on the tyres, which may be exacerbated by suspension or alignment problems that warrant further investigation. The recorded mileage of 42,538 miles for a vehicle aged approximately 13 years represents a relatively low annual usage rate of around 3,272 miles per year, which is notably below the typical wear rate for a car of this age and class. Such low mileage often correlates with periods of prolonged standing or light usage, which can lead to specific wear patterns distinct from those seen in high-mileage vehicles. For instance, standing for extended periods may cause brake discs to corrode or bind calipers due to moisture ingress, while tyres may develop sidewall perishing or cracking from exposure to UV light and temperature fluctuations. Additionally, fluids like brake fluid and differential oil can degrade over time without regular servicing, even if the vehicle is not driven frequently. The absence of rapid mileage accumulation suggests that wear on consumables such as brake pads, suspension components, and exhaust systems may not be as pronounced as one might expect from higher usage, but this does not absolve the need for periodic checks to address potential issues arising from static conditions. Given the recurring tyre advisories and the major defect from the 2025 MOT, the prospective buyer should conduct a thorough inspection of the tyres, focusing on tread depth, uniformity, and signs of edge wear or lateral cupping. On a test drive, listen for unusual noises from the tyres, such as squealing or scraping, which may indicate misalignment or excessive flexing. Check for uneven tyre wear patterns, which could point to suspension or steering issues, and visually inspect the tyre sidewalls for cracks or bulges, as these can signal underlying structural weaknesses. The mismatched rear tyres from the 2025 MOT failure must be addressed immediately, as they pose a safety risk and could lead to handling instability or uneven braking performance. If the tyres are replaced, ensure they are of the same size and type to maintain the vehicle’s original load distribution and handling characteristics. Beyond tyres, the buyer should verify the condition of the brake system, particularly the discs and calipers, for signs of corrosion, binding, or excessive heat discolouration. Standing for long periods can cause brake fluid to absorb moisture, reducing its effectiveness and potentially leading to spongy pedal feel or brake failure. Inspect the brake fluid reservoir for contamination and consider a fluid flush if the vehicle has been stationary for an extended period. The suspension system should also be checked for signs of wear, such as worn or cracked suspension bushes, coil spring failure, or excessive play in the control arms. Listen for clunking noises during cornering or over bumps, which may indicate loose or damaged suspension components. Additionally, given the vehicle’s age, the 12V battery should be tested for capacity and corrosion on the terminals, as older batteries may struggle under prolonged inactivity. Finally, while the MOT history is clean aside from the tyre advisories, a comprehensive service history should be reviewed to confirm that routine maintenance—such as oil changes, timing belt replacement, and exhaust emissions servicing—has been conducted according to BMW’s recommended intervals. If the service book is incomplete, consider scheduling a pre-purchase inspection by a qualified BMW specialist to address any potential hidden issues.