2017 BMW X6 3.0L Diesel · NK17 LZF

The vehicle remains roadworthy, but the maintenance trend shows a shift toward reactive repairs as the mileage increases. While the most recent test in April 2026 at 141,806 miles passed, it flagged a persistent oil leak and a damaged nearside windscreen. This follows a similar leak from the 2025 test, indicating that while the leak is not yet at a failure threshold, it has remained untreated over the previous twelve-month period. The mileage profile is high for a nine-year-old vehicle, averaging approximately 15,700 miles per year. There is a significant acceleration in usage between March 2023 and April 2024, where the car covered nearly 18,000 miles in just thirteen months. This rate continued with another 18,000+ miles recorded by the April 2025 test. Such consistent high-mileage typically accelerates the degradation of heavy-duty components such as the drivetrain and suspension assembly, which is reflected in the increasing frequency of mechanical advisories. A buyer must conduct a thorough physical inspection of the braking system and underbody. The 2024 test recorded both front and rear brake discs as pitted or scored, suggesting a history of corrosion or prolonged use without timely replacement. Furthermore, the presence of undertrays noted in 2024 is a concern as these components obscure the chassis from potential structural rust or active fluid leaks. The recurring oil leak noted in both 2025 and 2026 requires a professional pressure test to determine if it originates from a simple gasket or a more expensive engine seal failure.