2015 BMW 420 2.0L Diesel · CX65 NMY

The 2015 BMW 420 presents as roadworthy with a stable maintenance trend. The most recent test on 12 September 2025 at 63,398 miles returned a pass with no defects recorded, continuing an unbroken five-year sequence of clean MOT outcomes. No advisories or mechanical faults appear anywhere in the supplied history, which indicates the vehicle has not required corrective work within the test regime since at least 2021. Annual mileage has been consistently low for an eleven-year-old vehicle. The record shows 36,605 miles at the 17 September 2021 test, rising to 44,902 by 19 September 2022, 50,340 by 15 September 2023, 56,495 by 12 September 2024, and 63,398 by 12 September 2025. That equates to roughly 6,500 to 7,000 miles added each year, averaging under 5,800 miles annually across the car's life. The clean test sheets across this period leave no gaps or sudden accumulation spikes to explain, though the sparse interval of one test per year limits visibility of between-test wear. A buyer should still commission an independent inspection despite the unblemished record. Low-use BMWs of this era commonly develop perished suspension bushes, degraded coil springs, and corroding brake discs through prolonged standing, none of which a pass with no defects would necessarily expose if within tolerance on the day. The N47-derived drivetrain and rear subframe mounts warrant physical checks for oil seepage and structural rust. The absence of recurring advisories suggests previous owners kept basic consumables and emissions in order, but the sparse history offers no evidence of proactive overhaul. Verify service books against the 6,793-mile average annual use, and confirm tyre sidewall condition and handbrake function before purchase.