2009 BMW 520 2.0L Diesel · YC09 CCJ

The 2009 BMW 520 presents a stable and reassuring maintenance trend based on the available DVSA MOT records. The most recent test, conducted on 31 March 2023 at 155,369 miles, passed with zero defects recorded. This clean bill of health, combined with a consistent pattern of passes across the documented history, suggests the vehicle has been maintained to a competent standard. There are no recurring faults, no escalating wear items, and no advisories indicating a worsening mechanical condition. The trend is firmly stable, with no evidence of neglect or deferred maintenance in the recorded period. The mileage accumulation tells a coherent story. Between the January 2021 test at 143,100 miles and the March 2022 test at 145,002 miles, the car covered just 1,902 miles over roughly fourteen months, indicating a period of light use or possible standing. From March 2022 to March 2023, the odometer climbed from 145,002 to 155,369 miles, a jump of 10,367 miles in twelve months, which represents a return to more regular driving. The annualised average of approximately 9,139 miles across the vehicle's seventeen-year lifespan sits comfortably within typical usage for its age. The record is sparse, with gaps of up to two years between some tests, but the data points that exist are consistent and free of anomalies. Despite the clean MOT history, a prospective buyer should approach a 155,000-mile BMW 520 with appropriate diligence. The N47 diesel engine fitted to this generation is known for timing chain wear, particularly on earlier examples, and a thorough inspection of chain stretch and tensioner condition is advisable regardless of the pass record. The cooling system, including the water pump, thermostat, and plastic pipework, should be examined for signs of age-related brittleness or seepage. Suspension components, particularly front lower arm bushes and rear trailing arm bushes, commonly deteriorate on these cars at this mileage and may not always trigger an MOT advisory until failure is advanced. A physical underbody inspection is essential. Subframe mounting points and inner wing seams on the E60 5 Series are known to corrode, and surface protection can degrade over seventeen years even on well-kept examples. Brake lines, fuel lines, and the exhaust system should be checked for corrosion, especially around flexi-joints and mounting points. Tyre condition and wheel alignment should be assessed, as uneven wear can indicate underlying suspension geometry issues not yet severe enough to fail an MOT. The clean record is encouraging, but it reflects a snapshot in time, and a pre-purchase inspection by a BMW-experienced technician remains the most reliable way to verify the car's true condition.