2017 BMW 520 2.0L Diesel · LS17 UAO

The most recent MOT on 23 February 2026 was a full pass with no recorded defects, indicating that the vehicle presently meets the statutory roadworthiness criteria. Across the six‑year MOT record the majority of tests have also been clean, with the only recurring issue being a 2025 advisory noting thin rear brake pads and a rear disc that is slightly corroded on the edges. That advisory does not constitute a failure, but it does highlight that the rear braking system is approaching the end of its service life and will likely require attention in the near future. Overall the maintenance trend appears stable, with no new faults emerging, but the brake wear suggests a pending maintenance item rather than a deteriorating pattern. At 91,042 mi for a 2017 model the average annual mileage works out to roughly 10,100 mi per year, which sits comfortably within the typical UK usage envelope for a nine‑year‑old executive saloon. There are no conspicuous gaps in the recorded mileage that would imply long periods of storage, nor is there any indication of unusually high mileage that would accelerate wear on major components. Consequently the wear on consumables such as tyres, brake pads and fluid seals should be commensurate with the mileage rather than excessive, though age‑related degradation must still be considered. When you inspect the vehicle, give particular focus to the rear braking assembly. Measure the remaining pad thickness; anything below 2 mm will need replacement, and the disc should be examined for scoring, pitting or excessive rust that could cause vibration or reduced braking efficiency. On a test drive listen for any squeal, groan or pulsation when applying the rear brakes, and feel for a soft or spongy pedal that might indicate air in the system or worn pads. Since the advisory also mentioned slight edge corrosion on the disc, confirm that the disc surface is uniformly smooth and that the caliper pistons move freely without binding. If the rear brakes are due for service, it is prudent to replace both pads and discs together to ensure balanced braking performance. Beyond the brakes, conduct a thorough age‑related check. Inspect all four tyres for tread depth, sidewall cracking or dry‑rot, especially if the tyres are older than three years regardless of tread wear. Examine the battery terminals for corrosion and have the charge tested, as a nine‑year‑old battery may be nearing the end of its service life. Verify that the suspension bushings, especially the front lower control arm and rear trailing arm bushes, are not cracked or leaking grease, and listen for clunks over bumps. Check the fluid levels and condition of engine oil, coolant, brake fluid and power‑steering fluid, noting that brake fluid should be replaced at least every two years regardless of mileage. Finally, confirm that the off‑centre front windscreen damage noted in 2020 has not progressed and that the seal remains intact, as any compromise could lead to water ingress or wind noise. A comprehensive visual and road‑test inspection covering these points will give you confidence in the car’s mechanical health and highlight any imminent maintenance before purchase.