2016 BMW 420 2.0L Diesel · DX16 YME

The 2016 BMW 420 presents a stable and recently improving maintenance trend, culminating in a clean pass on 9 April 2026 at 77,367 miles with zero defects recorded. That result is significant because it follows a failure just two days prior on 7 April 2026 at 77,355 miles, where the tester flagged a nearside front tyre below the 1.6mm legal limit and an offside front tyre worn on its edge. The rapid retest and pass indicate the owner addressed the tyre defects promptly, which is a positive sign of responsive upkeep rather than neglect. Looking further back, the record shows a gradual reduction in the severity and frequency of advisories, suggesting the car has moved from a period of deferred attention toward more consistent maintenance. The mileage accumulation of roughly 7,737 miles per year over ten years is entirely typical for a vehicle of this age and class. There are no alarming gaps or sudden spikes in the annual test data. The recorded mileages climb steadily from 60,704 in April 2023 to 65,821 in April 2024, then to 71,508 in April 2025, and finally to 77,367 in April 2026, showing consistent year-on-year use without prolonged periods of inactivity that might raise concerns about seized components or stale fluids. A prospective buyer should pay close attention to the front tyres and steering components. The 2025 test at 71,508 miles flagged play in the offside front steering rack inner joint, a wear item that can deteriorate and affect handling precision if left unchecked. Although this did not reappear as a defect in 2026, it warrants a physical inspection of the inner rack joints and track rod ends for any remaining play. The front brake pads were noted as wearing thin in April 2024 at 65,821 miles, and the front brake discs showed wear in April 2023 at 60,704 miles, so the current condition of the front braking system should be verified, particularly pad thickness and disc lipping, given the mileage covered since those advisories. The rear differential oil leak flagged in April 2025 at 71,508 miles is another item that demands a visual check underneath the vehicle. A slight leak can progress to a significant loss of fluid if the seals degrade further, potentially damaging the differential. The recurring child seat obstruction preventing full inspection of rear adult seatbelts is a testing limitation rather than a mechanical fault, but a buyer should still manually verify the condition and retraction of all rear seatbelts. Finally, the repeated tyre perishing and cracking advisories across multiple years suggest the car may have spent extended periods stationary or been exposed to UV and temperature fluctuations, so a thorough inspection of all four tyres for sidewall condition, date codes, and uneven wear patterns is advisable before purchase.