2014 BMW 428 2.0L Petrol · S9 ACR

The vehicle presents a stable and largely positive roadworthiness record, with the most recent test on 6 March 2026 at 51,777 miles resulting in a pass. The maintenance trend is broadly stable, though the latest test introduced a notable advisory regarding the rear sub-frame. The tester flagged corrosion on the rear sub-frame but noted it was not seriously weakened at the time of inspection. This is a structural component, and while it passed the minimum standard, any corrosion on a sub-frame warrants close monitoring. The preceding four annual tests from 2022 through 2025 recorded zero defects, indicating the car has been maintained to a consistent standard with no recurring mechanical or safety failures. The mileage pattern tells a clear story of very light use. Across the recorded MOT history, the car has covered just 12,818 miles over four years, averaging roughly 3,200 miles annually. The most recent annual interval from March 2025 to March 2026 accounts for 3,628 miles, which is modest but slightly higher than the prior trend. At approximately 4,315 miles per year over its twelve-year life, this is well below the UK average. Low mileage can preserve mechanical components, but it also means the vehicle may have spent extended periods stationary, which can cause flat-spotted tyres, seized brake calipers, and moisture-related corrosion in hidden areas. The rear sub-frame corrosion advisory from the March 2026 test is the key item a buyer should investigate in person. Surface corrosion on a sub-frame is common on older BMWs, but the distinction between surface oxidation and structural weakening is critical. A physical inspection should assess whether the corrosion has progressed since the test, particularly around mounting points and welded joints. The rear suspension components, including trailing arm bushes and coil springs, should also be examined for wear, as these are directly mounted to the sub-frame and can be affected by its condition. Beyond the sub-frame, a buyer should check the braking system for uneven wear or binding, inspect all tyre sidewalls for age-related cracking given the low annual mileage, and verify that the exhaust emissions remain compliant. The clean record from 2022 to 2025 suggests attentive ownership, but the emergence of a structural advisory in 2026 signals that the next owner should budget for ongoing monitoring of the rear sub-frame and surrounding chassis components.