2016 BMW 420 2.0L Diesel · PY66 OSD

The vehicle's most recent DVSA MOT test, conducted on 25 September 2025, resulted in a pass with no defects or advisories recorded, indicating that the car met the statutory roadworthiness standards on the date of examination. Looking at the broader history, the pattern is broadly stable and reassuring: the car has passed its annual tests consistently over the last four years, with the only blemish being a single failed test on 20 September 2024 which was followed just four days later by a pass on 24 September 2024. The fact that the failure produced no recorded advisories suggests it was likely a borderline or intermittent issue rectified immediately, rather than a recurring mechanical fault. No persistent advisories related to suspension components, brake wear, tyres, corrosion, or exhaust emissions have been carried forward in any of the recent records, which is a positive indicator of either diligent maintenance or genuinely low wear at the point of test. With approximately 74,370 miles recorded on a 2016 vehicle, the car has covered roughly 7,437 miles per year over its ten-year life, which sits comfortably within the typical average for a UK private vehicle of this age. The mileage progression across the MOT records does not reveal any large unexplained gaps or sudden spikes that might suggest clock discrepancies, extended standing periods, or unusually high-use phases. This consistent annual accumulation suggests the vehicle has been used regularly rather than left idle for long stretches, which is mechanically beneficial as it reduces the risk of seized brake calipers, dried seals, perished coolant hoses, and flat-spotted tyres, while also keeping the battery and drivetrain lubricants in regular working condition. Because the MOT history is clean of advisories and failures, there are no specific recurring defects to investigate further, but a prospective buyer should still carry out a thorough physical inspection appropriate to a ten-year-old BMW 4 Series. Tyres on a car of this age and mileage should be examined closely for both legal tread depth and, importantly, for sidewall perishing or cracking caused by age-related rubber degradation, even if the tread appears adequate. The 12V battery, which on BMWs of this era is often located in the boot, is approaching the end of its typical service life and should be load-tested, as a failing battery can cause a cascade of electrical faults and registration of false error codes. Brake discs, particularly on the rear axle where BMWs are prone to premature corrosion from infrequent or gentle use, should be inspected for any lipping, surface rust, or binding caliper operation, and the condition of the fluid should be confirmed as it degrades hygroscopically over time and should ideally have been renewed within the last two to three years regardless of mileage. On a test drive, particular attention should be paid to the suspension for any clonks, knocks, or knocking sounds over uneven surfaces, which could indicate worn control arm bushes, top mounts, or coil springs, all of which are wear items on a vehicle of this age. Listen for any clonking or vibration from the front end, check for uneven tyre wear across the axle which might point to misalignment or worn suspension geometry, and verify that the steering remains centred with no vibration through the rim at speed. The engine should start cleanly from cold with no excessive smoke, the automatic or manual gearbox should select smoothly without hesitation or jerkiness, and the cooling system should be examined for any signs of coolant weep from the expansion tank, water pump, or radiator, as these plastic components become brittle with age. Finally, confirming a full BMW main agent or specialist service history with evidence of recent renewal of the engine oil, brake fluid, coolant, and transmission fluid will provide the strongest assurance that this otherwise clean-MOT example has been properly maintained in line with its calendar age.