2018 BMW 420 2.0L Diesel · RF68 WRJ

This BMW 420 demonstrates a stable roadworthiness trend over the past three MOT cycles, with the most recent test on 2025-07-17 confirming no defects at 45,969 miles. The absence of advisories or failings across the last two annual tests suggests the vehicle has been maintained within DVSA’s baseline standards for suspension, brakes, emissions, and structural integrity. However, the single failure in July 2024—just three days before the subsequent pass—indicates a narrow margin for error, particularly if the issue was a minor oversight rather than a recurring fault. Buyers should verify whether the 2024 failure involved a component prone to intermittent failure, such as a loose wheel nut or a minor emissions leak, as these often reappear if not properly addressed. The recorded mileage of 45,969 miles over eight years—approximately 5,746 miles annually—is unusually low for a vehicle of this age, suggesting either infrequent use or prolonged periods of storage. The gap between the 2023-01-16 test at 35,290 miles and the 2023-07-23 test at 37,753 miles (a 2,463-mile interval over six months) stands out as the most significant accumulation in the record, though it remains modest. The consistency of low mileage implies reduced wear on high-mileage components like suspension bushes, coil springs, or brake calipers, but it also raises questions about whether fluids (e.g., brake fluid, coolant) have been refreshed according to manufacturer intervals rather than usage-based schedules. Given the clean MOT history, an in-person inspection should prioritise the suspension’s structural integrity, particularly the rear bushes and coil springs, as these are common failure points in BMWs of this era. The 2024 failure—though resolved—warrants scrutiny of wheel bearings or brake binding, as these are frequent causes of sudden MOT rejections. Corrosion around wheel arches, subframes, or exhaust mounts should also be checked, especially if the vehicle has spent extended periods in damp conditions. Finally, verify the condition of the exhaust system, as catalytic converter failures or leaks can trigger advisory notes even if the vehicle passes. The absence of advisories does not guarantee these areas are flawless, so visual and functional checks are essential.