2007 BMW 535 3.0L Diesel · NB57 CAO

The most recent MOT, dated 5 November 2025, was passed but returned a series of advisories covering an off‑side front lower oil leak and deteriorating rubber brake hoses on all four wheels. The preceding day’s test failed on the same items, indicating that the leak and hose condition have not been rectified. Earlier in the record, a failure in November 2024 related to a severely worn near‑side rear upper ball joint and tyre tread below legal limits was followed by a pass with only a slight play advisory on the opposite arm. Prior years show recurring minor items such as anti‑roll‑bar dust‑cover wear and light oil mist from the front shocks. Overall the maintenance trend is mixed: some defects have been addressed, yet several wear‑related issues persist and have not been fully remedied, suggesting a maintenance regime that is reactive rather than proactive. At 166,814 miles the car averages roughly 8,800 miles per annum over its 19‑year life, a usage pattern that sits squarely within the normal range for a vehicle of this age. There are no obvious periods of prolonged inactivity that would raise concerns about corrosion from standing, nor is there evidence of accelerated mileage that would have dramatically shortened component life. Nonetheless, the cumulative distance means that wear items such as suspension bushings, drivetrain bearings and brake components are likely approaching the latter stages of their service lives and should be inspected with a view to pre‑emptive replacement. A prospective buyer should focus first on the oil leak reported on the off‑side front lower engine area. Visually inspect the valve‑cover gasket, oil filter housing and surrounding sump for fresh oil stains, and verify that there is no oil pooling on the exhaust or under the vehicle, as a persistent leak can lead to fire risk and reduced oil level. The brake hoses on all corners are flagged as slightly perished; rubber hardening or cracking can cause sudden loss of hydraulic pressure. Check the hoses for any visible cracks, swelling or fluid seepage, and test the pedal for a firm, consistent feel – any sponginess or a drop in pressure under load warrants immediate hose replacement. The rear suspension ball joints, particularly the near‑side rear upper joint that was previously deemed excessively worn, should be examined for play by rocking the wheel at the 12 o’clock and 6 o’clock positions; any clunk or uneven tyre wear may indicate that the joint is now approaching the limit and will need replacement. Likewise, the anti‑roll‑bar linkage dust covers that have deteriorated can allow grit to infiltrate the bushings, potentially leading to premature wear, so the condition of the bushings should be felt for looseness and the covers replaced if cracked. The front shock absorbers showing light oil mist suggest seal wear; a quick bounce test should reveal reduced damping or excessive rebound, and if the ride feels soft or the vehicle leans excessively in corners, the shocks should be considered for overhaul or replacement. Finally, given the vehicle’s age, a thorough check of time‑related items is essential. Verify the tyre tread depth and sidewall condition, paying particular attention to the DOT code to ensure the tyres are not beyond six years, as rubber perishes even on low‑mileage cars. Inspect the 12 V battery for sulphation, check the electrolyte level (if serviceable) and perform a load test to confirm it can hold charge, especially if the car has spent periods idle. Examine the coolant, brake fluid and power‑steering fluid for colour and clarity; these fluids degrade over time and should be flushed at least every two years, regardless of mileage. Lastly, confirm that the service book contains regular oil changes, filter replacements and timing‑chain or belt service as prescribed by BMW, and that any outstanding recalls have been addressed. Addressing these points will give a clear indication of the car’s current roadworthiness and the likely cost of bringing it to a reliable, safe condition.