2005 BMW 523 2.5L Petrol · M40 JBU

The vehicle is currently roadworthy but the maintenance trend shows a persistent failure to address known mechanical defects. While it passed its latest test in May 2026 at 119,519 miles, the tester again flagged significant corrosion on both the nearside and offside rear brake pipes. This specific issue appeared in every consecutive MOT record from 2024 through to 2026, indicating that the previous owners have opted to manage the faults with minor repairs rather than replacing the corroded components. At 21 years old, the recorded 119,519 miles represent a low-average usage pattern of approximately 5,700 miles per year. The mileage accumulation appears consistent, with annual intervals of roughly 5,000 to 7,000 miles between tests from 2023 to 2026. However, the low mileage often correlates with the degradation of rubber components and seals due to sitting. The failure in April 2025 due to a 1.6mm tyre tread depth suggests that basic consumable maintenance has been occasionally neglected despite the low overall distance driven. A buyer must prioritize a thorough inspection of the rear braking system. The presence of grease on corroded brake pipes is a common tactic used to hide leaks or slow down oxidation, which poses a risk of sudden hydraulic failure. You should verify the structural integrity of the brake lines and check for any signs of fluid weeping at the mounting points. Given the age of the BMW and the low mileage, the suspension bushes and bushings should also be examined for cracking or tearing, as these parts perish over time regardless of mileage driven.