2017 BMW 5 Series 2.0L Diesel · AK67 AAN

The most recent MOT test on 2026-02-18 resulted in a failure due to a major defect in the parking brake efficiency, alongside persistent advisories on brake components. While the earlier MOTs in 2023 and 2022 were clean, the recurring advisories on brake pads and discs—particularly the thinness of pads and worn, pitted discs—suggest a pattern of gradual but consistent wear, indicating either prolonged service intervals or higher-than-average usage. The failure in 2026 highlights a critical issue that must be addressed promptly, as the parking brake system’s inefficiency poses a safety risk, particularly if the vehicle is used for daily driving or in hilly terrain. The advisories from prior tests, though not failing, underscore ongoing degradation in brake components, which could escalate if not serviced. This trend suggests the vehicle has not been maintained with the same diligence as a lower-mileage example, and the buyer should prioritise brake replacement or refurbishment to restore roadworthiness and safety. The vehicle’s recorded mileage of 99,971 miles at nine years old represents a moderate annual usage rate of approximately 11,108 miles per year, which is within the expected range for a BMW 5 Series of this age. However, the consistency of mileage accumulation—without significant gaps or rapid surges—does not necessarily indicate high wear rates, as long-term light use can also lead to gradual component degradation, particularly in brakes, tyres, and suspension. The absence of high-mileage indicators such as excessive oil consumption, unusual exhaust emissions, or visible signs of rapid wear on internal components suggests that while the vehicle has been driven regularly, the wear profile aligns with typical usage patterns rather than aggressive or neglectful driving. Still, the lack of service records or a service book could imply that consumables like brake fluids, coolant, and transmission oil may have degraded over time without recent replenishment, warranting a thorough check for calendar-based fluid condition. For the prospective buyer, the most urgent concern is the parking brake system, which failed inspection due to insufficient efficiency. This typically stems from worn or misaligned parking brake cables, binding calipers, or a faulty actuator, often exacerbated by prolonged standing or neglect. On a test drive, listen for a dragging or uneven engagement when applying the parking brake—if it takes excessive force or fails to hold securely, this confirms the failure. Additionally, check for uneven brake pad wear across both front and rear, as the advisories indicate, which may suggest misalignment or hydraulic issues. Inspect the brake discs for excessive pitting or warping, which can affect stopping performance and contribute to shuddering when braking. If the brake system is refurbished, replace all pads and discs to ensure uniform wear and optimal performance, and consider servicing the parking brake mechanism to restore proper function. Beyond the brakes, the tyre advisories from previous MOTs—particularly the nearside rear and offside front tyres worn close to the legal limit—demand attention. Tyres worn on the edges or near the legal minimum tread depth indicate directional or uneven loading, often caused by misaligned wheels, suspension issues, or improper inflation. On a test drive, check for uneven tyre wear patterns, which may reveal misalignment or camber issues. Verify tyre pressure at each port and ensure they are balanced, as inconsistent pressure or imbalance can exacerbate wear. For the tyres themselves, inspect the sidewall for signs of cracking or perishing, which can compromise structural integrity, especially in a vehicle of this age. Given the vehicle’s mileage and age, consider replacing the tyres to meet legal requirements and prevent hydroplaning risks. The suspension advisories, such as the light misting of oil in the front shock absorbers, suggest minor fluid leakage or internal wear, which may not yet require replacement but warrants monitoring for further deterioration. Check for excessive suspension clunks or bottoming when driving over bumps, which could indicate failing suspension bushes or coil springs. Lastly, given the lack of a service history, conduct a basic inspection of the 12V battery, checking for corrosion on terminals, ensuring it holds a charge, and verifying that the alternator is functioning correctly to recharge the battery. Additionally, inspect the coolant system for leaks or signs of overheating, as BMWs of this age can develop leaks in the radiator hoses or water pump.