2004 BMW 645 4.4L Petrol · EN04 ABF

With only a single recorded MOT entry from December 2024 showing a clean pass and no advisories whatsoever, the official roadworthiness evidence for this 2004 BMW 645 is sparse but positive at face value. The absence of any documented defects, advisories, or failures means there is no recorded pattern of component wear, corrosion, or mechanical deterioration to flag against. However, the brevity of the testing history is itself a factor worth weighing. Only one test result is available, which offers a narrow window into the car's structural and mechanical condition and does not establish a meaningful trend of either stability or decline over time. The latest pass confirms that at that point the vehicle met minimum statutory standards, but it provides limited insight into how the car has aged across the intervening two decades or how it might present now, nine months beyond that examination. Recorded mileage of 86,561 miles over approximately 22 years equates to an annual accumulation of roughly 3,935 miles, which is notably low for a vehicle of this age and type. This figure falls well below average mileage expectations for a luxury coupe and suggests either genuinely light use, extended periods of inactivity, or possibly that a significant portion of the car's life has been spent off the public road or in storage. Mechanically, low annual mileage does not automatically equate to superior condition. Standing for prolonged periods can be particularly punishing for components such as brake discs and pads, which can corrode and develop uneven surfaces, as well as for rubber elements like suspension bushes, drive belts, and tyres, all of which deteriorate with age irrespective of mileage. Equally, infrequent use can allow seals, gaskets, and flexible hoses to dry and perish, increasing the likelihood of fluid leaks when the vehicle is subsequently exercised. Conversely, the limited mileage does imply that major drivetrain components such as the engine, transmission, and differentials have seen comparatively low mechanical stress, which is favourable for internal longevity. Given that no specific components have been flagged in the MOT record, a prospective buyer should focus on the areas most prone to age-related deterioration in early-2000s BMW chassis, particularly the V8 engines and related ancillaries common to this era. On a test drive, listen carefully for any timing chain rattle from a cold start, as BMW V8 timing chain guides are known to wear with age and mileage, and check for blue or grey exhaust smoke under hard acceleration suggesting valve stem seal degradation. Inspect the underside of the engine and transmission for any signs of oil seepage from the valley pan, rear main seal, or transmission pan, as these are common failure points. Allow the engine to reach full operating temperature and verify that the gearbox selects all gears smoothly without clonks or hesitation, paying particular attention to reverse engagement which can be an early indicator of selector mechanism wear on these transmissions. Equally important is a thorough inspection of the suspension and braking systems, since age rather than mileage governs much of their wear on this car. With the vehicle on level ground, push firmly on each corner and release, looking for any extended bouncing or knocking noises that could indicate worn coil springs, degraded hydraulic dampers, or perished top mounts and control arm bushes. On the road, listen for clonks or creaks from the front suspension over speed bumps and uneven surfaces, and feel for any vagueness, wandering, or knocking through the steering wheel which could point to worn tie rods, thrust arms, or power steering components. Check the brake pedal for firmness and any pulsation under load, and on a downhill section verify that the car stops squarely without pulling to either side, which would indicate a binding caliper or uneven pad wear. Visually inspect the wheels from behind for any signs of brake disc corrosion or lipping, and examine the visible brake pipes and flexible lines for surface rust or cracking, as brake line corrosion is a common advisory on older vehicles and would warrant close scrutiny even though none was previously recorded.