2014 BMW 420 2.0L Petrol · AF10 ROZ

The most recent MOT test on 2025-12-01 returned a passing result, but the vehicle’s history reveals a pattern of recurring advisories and a single critical failure in 2024-11-25 that required urgent attention. While the 2025 test itself was clean, the presence of multiple near-edge tyre wear advisories—particularly on the nearside rear and offside front inner tyres—suggests a consistent wear pattern that could escalate if not addressed promptly. The suspension advisories concerning worn suspension arm bushes on both front axles indicate progressive wear in the upper control arms, which, if left unchecked, may lead to increased vibration, steering play, or even arm failure over time. The 2024 failure highlighted dangerous conditions in the rear brakes, including severely worn brake pads and a weakened brake disc, which are critical issues requiring immediate replacement of pads and discs to prevent brake failure or disc splitting. This suggests that while the vehicle has passed recent MOTs, the underlying mechanical condition may be deteriorating at a moderate rate, particularly in the suspension and braking systems. The vehicle’s recorded mileage of 143,454 miles at 12 years old represents an annual usage rate of approximately 11,954 miles, which is within the expected range for a car of this age and class. However, the gap between the 2024 failure and the 2025 MOT—nearly a year—may indicate periods of low or no use, which can exacerbate wear in consumable components like brakes and seals, as well as allow corrosion to develop in standing parts. The suspension bushes and brake components, in particular, are prone to dry-out and corrosion when stationary for extended periods, which could have contributed to the 2024 failure. Additionally, the tyre wear advisories suggest either aggressive cornering, uneven load distribution, or misalignment, all of which could be influenced by suspension issues. While the mileage alone doesn’t justify immediate concern, the combination of wear advisories and the timing of the 2024 failure warrants closer inspection of these systems before proceeding with purchase. For the prospective buyer, the most critical areas to inspect are the suspension and braking systems, given the recurring advisories and the 2024 failure. During a test drive, listen for unusual clunks or rattles from the suspension, particularly around the front upper control arms, which may indicate loose or worn bushes. Check for uneven tyre wear patterns, as this could correlate with misaligned wheels or suspension issues. Inspect the rear brakes for any signs of pulsation or shuddering, which may suggest warped discs or binding calipers, and test the brake pedal for firmness or sponginess, which could indicate fluid degradation or hydraulic issues. The brake discs should be visually examined for cracks or deep grooves, and the pads should be measured for thickness—if they are below 1.5mm, they must be replaced immediately. Additionally, verify that the rear brake discs are not warped or bent, as this can lead to uneven braking performance or failure. Beyond the mechanical systems, the buyer should conduct a thorough visual and functional inspection of the vehicle’s standing components. Check for signs of corrosion on the rear brake discs, calipers, and suspension linkages, as prolonged idling can accelerate rust formation. Inspect the tyres for sidewall perishing, which is common in older vehicles and can compromise structural integrity, especially if the tyres have been stored without proper care. Verify the condition of the 12V battery, as low mileage can lead to battery drain from parasitic loads or standing corrosion, and test the electrical systems for any signs of weakness. Finally, ensure that the service history is up-to-date, particularly for fluid servicing—oil, brake fluid, and coolant should be replaced according to BMW’s recommended intervals, even if the vehicle has not been driven extensively. If the service book is missing or incomplete, arrange for a professional inspection to confirm that time-based maintenance has been carried out, as this is often overlooked in low-mileage vehicles.