2021 BMW Z4 2.0L Petrol · R6 AJD

The most recent MOT, conducted on 27 October 2025 at 109,674 miles, passed with zero defects, indicating the vehicle was presented in a fully compliant state at that time. The maintenance trend over the past three years shows a clear improvement. The 2024 test cycle was notably messy, requiring a retest after a failure for exposed ply on the nearside rear tyre, an insecure wiring harness rubbing against the anti-roll bar link, and multiple worn tyres. The fact that the 2025 test passed cleanly suggests the previous owner addressed those issues promptly. However, the underlying pattern of tyre wear and minor suspension component degradation visible in the 2023 and 2024 records warrants careful physical inspection today, given the vehicle has now sat for nearly eight months since its last test. The mileage progression tells a story of consistent but light use. Between the November 2023 test at 87,258 miles and the October 2024 test at 98,362 miles, the Z4 covered 11,104 miles in roughly eleven months. From October 2024 to October 2025, the odometer moved only 11,312 miles, yet the recorded mileage remained static at 109,674 miles for the 2025 test, suggesting the car has seen very little use in the past eight months or the mileage was recorded at the point of a recent service or sale. The annual average of roughly 7,312 miles is typical for a 15-year-old sports car and does not raise immediate concern about excessive wear, though prolonged periods of inactivity can cause its own issues, such as flat-spotted tyres, sticking brake calipers, and moisture ingress into electrical connectors. The 2024 failure for an insecure wiring harness rubbing on the nearside front anti-roll bar link is a notable red flag. Chafing wiring can lead to intermittent faults or sudden electrical failures, so the front subframe and harness routing should be inspected for fresh abrasion or makeshift repairs. The repeated advisories for worn anti-roll bar ball joints and bushes in November 2023, combined with the tyre wear patterns showing edge wear on both front tyres, point to a front suspension setup that has seen better days. A physical check for play in the front drop links, wishbone bushes, and tracking alignment is essential, as uneven tyre wear often indicates misalignment or soft suspension components. Tyre condition has been a recurring theme. The nearside rear tyre failed with exposed ply in October 2024, and multiple front tyres were flagged as worn to the legal limit or on the edges. Buyers should carefully examine all four tyres for age-related cracking, uneven tread depth, and sidewall damage, particularly if the car has been sitting unused. Brake discs and pads should also be checked for surface corrosion and binding, as low-mileage sports cars often suffer from stuck calipers and uneven disc wear from short journeys. The clean 2025 result is encouraging, but the earlier failures suggest basic upkeep was reactive rather than preventative, making a thorough pre-inspection critical.