2018 BMW X5 3.0L Diesel · Y6 ATT

The latest MOT test in October 2025 resulted in a pass, continuing a trend of consistent passes since the 2021 failure, which was resolved by addressing a non-functional central rear seatbelt buckle. The advisory pattern, however, shows recurring rear tyre wear on both the inner and outer edges, first noted in 2021 and persisting through 2023 and 2025, indicating a potential underlying issue with rear suspension alignment or component wear. While the absence of major defects in recent tests suggests a stable maintenance trend, the repeated tyre advisories warrant closer scrutiny to prevent premature or uneven wear from progressing further. At 67,889 miles over eight years, this BMW X5 has averaged approximately 8,486 miles annually, which aligns with typical usage for a vehicle of this age and class. The mileage accumulation appears steady, with no evidence of prolonged inactivity or excessive use that might accelerate wear on consumables such as brakes, suspension bushes, or drivetrain components. However, the age of the vehicle means that time-based degradation of rubber and fluid components is as critical to assess as mileage-related wear. The recurring rear tyre wear advisories, particularly on the inner edges, strongly suggest the need for a four-wheel alignment check, focusing on rear camber and toe settings, which can be affected by worn suspension bushes, bent control arms, or sagging coil springs. On a test drive, listen for clunks or knocks over rough surfaces, which may indicate worn rear suspension components, and observe whether the vehicle pulls to one side or exhibits uneven braking, as these symptoms often accompany misalignment. Additionally, inspect the rear tyres for feathering or scalloping on the tread, which would confirm alignment issues. Given the age of the vehicle, also check the condition of the 12V battery, as these often require replacement around the 5-6 year mark, and examine the brake discs for surface corrosion or lip formation, which can occur even with moderate mileage if the car has spent periods stationary. Finally, verify the service history to ensure that time-sensitive fluids, such as brake fluid, coolant, and differential oil, have been replaced in accordance with the manufacturer’s intervals, as these degrade regardless of mileage. Inspect the tyre sidewalls for cracking or perishing, which is common in tyres over five years old, and assess the condition of the exhaust system for corrosion or leaks, particularly around the joints and silencer. The child lock advisory in 2021 is a minor note but ensure all rear door mechanisms operate smoothly. Addressing these points will provide a comprehensive picture of the vehicle’s roadworthiness and potential future maintenance needs.