2015 BMW 420 2.0L Petrol · SH65 CVE

The vehicle passed its most recent MOT test on 26 January 2026, which is encouraging, but the latest pass is accompanied by an advisory concerning the nearside front tyre being worn close to the legal limit on its edge. Looking back through the recorded history, a clear and persistent pattern emerges around the front tyres and the rear nearside, with multiple advisories for edge wear across several consecutive tests and at least one dangerous failure for sub-legal tread depth on the offside front tyre in January 2026 and again in August 2020. The parking brake has also drawn attention in two consecutive tests, with a major failure recorded for insufficient efficiency in early 2026 and an advisory the year before suggesting adjustment or repair. Taken together, the overall trend is one of stable routine maintenance but recurring concerns in two specific areas: tyre wear geometry and rear brake actuation, neither of which has been conclusively resolved on the record. A prospective buyer should therefore treat the car as fundamentally serviceable but with known watchpoints rather than a clean bill of health. The recorded mileage of 77,661 miles over approximately eleven years equates to an annual average of around 7,000 miles, which is broadly typical for a car of this age and indicates neither chronic underuse nor particularly hard use. There are no unusual gaps or sudden spikes in the recorded mileages between tests, suggesting consistent driving patterns rather than long periods of standing or motorway commuting extremes. At this level of usage the mechanical implications are generally favourable, with consumable wear progressing at a moderate, expected rate and major drivetrain components such as the engine, automatic transmission and turbocharger unlikely to have been unduly stressed. The concerns in the MOT record therefore cannot be explained away by excessive mileage and point instead towards specific component or geometry issues that warrant targeted inspection rather than general wear and tear. The most significant recurring issue is front and rear tyre edge wear, which on a rear-wheel-drive BMW 4 Series of this era is often symptomatic of misalignment, worn suspension bushes, weak coil springs, or top mount deterioration. A test drive should be carried out over uneven road surfaces with the windows down to listen for clonks, knocks or rattles from the front suspension, particularly over speed humps and potholes, and any vagueness in the steering or pull to one side under braking should be noted. The nearside rear tyre advisory from 2023 and 2025 likewise suggests persistent geometry or loading issues that have not been rectified. A buyer should request evidence of a recent four-wheel alignment and inspect all four tyres for uneven shoulder wear, sidewall cracking or perishing given the vehicle's age, and budget for a full set of premium replacements if the existing tyres are approaching the end of their service life. The second area of concern is the parking brake, which has now failed outright rather than merely drawing an advisory, indicating deterioration rather than a one-off lapse. This often traces to seized rear caliper mechanisms, stretched or corroded Bowden cables, or worn handbrake shoes and actuation drums on the rear discs. On a test drive, the vehicle should be parked on a moderate incline with the handbrake engaged to confirm it holds securely without creep, and a low-speed reverse stop should be performed to feel for any rear brake binding or dragging that would suggest a caliper not releasing fully. Beyond these specific items, given the calendar age of the vehicle a buyer should also verify the condition and age of the 12 volt battery, inspect coolant and brake fluid for time-based degradation regardless of mileage, and confirm a fully stamped service history with particular attention to spark plugs, brake fluid renewal and the condition of the timing chain or VANOS components typical of the N20 or B48 engines fitted to this model. The vehicle is fundamentally sound but would benefit from immediate attention to tyres and parking brake before further use.