2021 BMW X3 XDRIVE20D M Sport Mhev Auto 2.0L Electric diesel · WD71 CAO

The most recent MOT on 24 August 2026 was passed, but it carried two advisories – a slightly noisy nearside front wheel bearing and a nearside rear tyre with minor side‑wall damage. Over the previous three years the pattern shows a failure in August 2024 due to an inoperative engine MIL indicator and rear‑tyre wear, followed by a clean pass in 2025 with only thin front‑brake‑pad wear noted. The trend is therefore mixed: tyre wear and the MIL fault have been addressed enough to avoid a repeat failure, yet the recurrence of bearing noise and tyre damage indicates that wear items are persisting and may be worsening if not remedied promptly. At 107,628 miles the X3 has logged roughly 21,500 miles per annum, which is well above the average for a five‑year‑old executive SUV. Such a mileage rate accelerates the consumption of consumables – brake discs and pads, suspension bushings, drivetrain joints and tyre tread – and can exacerbate hidden corrosion in the under‑body and exhaust system. There are no obvious gaps in the MOT record that would suggest long periods of inactivity, so the high mileage is likely the result of regular, possibly aggressive, use rather than prolonged storage. Prospective buyers should give the rear tyres immediate attention; both rear wheels were flagged as close to the legal limit and one tyre now shows side‑wall damage, suggesting the tread is uneven and the carcass may be compromised. A thorough visual inspection for cuts, bulges or exposed cords, followed by a tread‑depth measurement, is essential, and replacement of both rear tyres is advisable to maintain balanced handling. The nearside front bearing noise warrants a road‑test listening for a low‑frequency growl that changes with vehicle speed and steering input; if present, the bearing and possibly the hub assembly should be inspected for wear or insufficient lubrication. The engine MIL fault recorded in 2024, although cleared for the latest test, should be diagnosed with a scanner to confirm that the underlying sensor or emission‑control component is functioning correctly, as intermittent faults can lead to reduced fuel efficiency or catalytic‑converter damage. In addition to the specific items above, the thin front‑brake‑pad advisory signals that the front brake discs may soon require resurfacing or replacement, especially given the high mileage. Inspect the brake discs for scoring, rust, or uneven wear, and listen for any shudder or squeal under moderate braking. The vehicle’s suspension should be examined for worn bushings, cracked coil‑spring mounts and any play in the control arms, as cumulative mileage can degrade ride quality and alignment. Check the 12‑volt battery for voltage and cranking performance, as a five‑year‑old battery may be nearing the end of its service life, and verify that the service book shows timely oil, coolant and brake‑fluid changes – fluids degrade with time even if mileage is moderate. A comprehensive pre‑purchase inspection that covers these areas will give a clear picture of the X3’s mechanical health and the likely cost of bringing it up to a reliable, road‑worthy condition.