2017 BMW 420 2.0L Diesel · SS04 AHS

The most recent DVSA roadworthiness examination was conducted on 3 March 2026 and resulted in a Pass, accompanied by an advisory notice concerning play in the offside steering rack inner joint. While an advisory does not constitute a failure, it is a formal examiner observation that should not be dismissed. Looking back across the recorded test history, this vehicle has maintained an unbroken run of Pass outcomes stretching back to 2020, with no defects recorded in any of the six preceding examinations. The emergence of a steering rack advisory at the most recent test represents the first recorded mechanical concern in this MOT sequence, suggesting a stable maintenance trend that is now showing the very early signs of wear consistent with a vehicle approaching a decade of service. The recorded mileage of 85,841 miles against an approximate age of nine years equates to an annual usage rate of around 9,500 miles, which is broadly typical for a vehicle of this vintage and profile. The mileage progression across the recorded tests appears steady and consistent rather than showing any significant gaps that might suggest prolonged periods of standing, nor any unusually rapid accumulation that would point to high-stress use such as motorway commuting or heavy commercial application. At this average annual figure, the major drivetrain, suspension, and braking components will have experienced moderate but progressive wear, with consumable items such as brake pads, discs, tyres, and certain rubber bushes likely to be approaching or due for replacement within the next service interval. The advisory relating to play in the offside steering rack inner joint warrants particular attention from any prospective buyer, as steering rack wear tends to progress gradually and can deteriorate further between tests. On a physical inspection, the buyer should look for any uneven tyre wear on the front axle, particularly on the inside or outside edges of the offside front tyre, which is often the first external indicator of deteriorating steering geometry. On a test drive, listen carefully for any knocking or clonking noises from the front end, particularly when traversing speed bumps, potholes, or uneven road surfaces, and pay attention to any vagueness, delay, or twitching in the steering response, especially around the straight-ahead position. It is also advisable to have the steering rack examined by a BMW specialist or independent garage to determine whether the wear is within acceptable tolerance or whether a rebuild or replacement is imminent, as rack replacement on this model can represent a significant cost. Given the vehicle's age of nine years and its consistent but moderate usage profile, a prospective buyer should also conduct a range of age- and mileage-appropriate checks beyond the MOT record. Tyre sidewalls should be examined carefully for cracking or perishing caused by age-related rubber degradation, even if the tread depth remains legal, as tyres older than six or seven years can lose structural integrity. The 12-volt battery should be load-tested, as original or replacement batteries of this age frequently hold insufficient charge, particularly if the vehicle has experienced any periods of short-trip use. The brake discs should be inspected for corrosion ridges on the outer edges, and the calipers should be checked for smooth operation, as calipers that have begun to seize or bind can lead to uneven pad wear and reduced braking efficiency. Finally, verify the service book history to confirm that time-based fluid renewals have been carried out at appropriate intervals, including brake fluid, coolant, and, if applicable, automatic transmission fluid, all of which degrade with calendar age irrespective of mileage, and ensure that any diagnostic warning lights on the instrument cluster are investigated with a proper BMW-compatible scan tool prior to purchase.