2006 BMW 525 2.5L Diesel · LS06 ODW

The most recent MOT, carried out on 6 December 2025, was passed but retained an advisory concerning slight play in the nearside front track‑rod end ball joint. The preceding year shows a mixed picture: a failure in November 2025 for parking‑brake inefficiency and a separate failure in November 2024 for an excessive play in the same ball joint and a washer‑fluid supply fault, both of which were rectified to achieve a pass in the following tests. Overall the trend is stabilising; the major defects identified in 2024 and 2025 have been addressed, and no new serious failures have appeared since the 2023 pass, suggesting the vehicle’s maintenance is now on an improving footing. At 121,834 miles the car averages just over 6,000 miles per annum, which is modest for a 20‑year‑old BMW 525. The mileage is consistent with occasional use rather than constant high‑speed touring, indicating that many of the wear‑related components may have benefited from lower cumulative stress. However, the relatively low annual run‑off also raises the possibility of long periods of inactivity, which can accelerate corrosion of suspension bushings, brake disc surface rust, and battery sulphation. No evidence of abrupt mileage spikes is present, so the wear pattern should be relatively even across drivetrain and chassis components. Prospective buyers should give particular attention to the front track‑rod end ball joint on the nearside. Slight play can manifest as a vague clunk or vague steering wander when negotiating bumps or during hard cornering; excessive wear may lead to uneven tyre wear on the front left wheel and progressive steering axis misalignment. Verify that the joint is free of excessive movement by checking for play with the wheel lifted and the steering wheel centred, and inspect the surrounding rubber boots for cracks or fluid leakage. The parking‑brake system, which previously failed on one side, should be tested for firm, even engagement and release; listen for any grinding or binding from the rear calipers and confirm that the hand‑brake lever offers a distinct, progressive resistance without excessive travel. Given the vehicle’s age, a thorough visual and tactile inspection of age‑related items is essential. Examine all four tyres for sidewall cracking, dry rot, or uneven tread loss, as rubber can deteriorate even on low‑mileage cars. Check the battery terminals for corrosion and assess the charge hold, ideally with a load tester, because a 20‑year‑old battery may have lost capacity. Inspect the brake discs for surface rust or scoring, especially if the car has been stationary for extended periods, and confirm that the pads are not glazed. Verify that the washer‑fluid reservoir is clean and that the pump delivers a steady spray; a weak washer system can indicate a failing pump or clogged nozzles. Finally, confirm that the service history shows regular oil and filter changes, coolant flushes, and that the timing chain or belt (as applicable) has been inspected, as these are critical for long‑term reliability in a vehicle of this vintage.