2014 Mercedes-Benz ML 3.0L Diesel · ML64 MBZ

The most recent MOT test on 29 April 2026 resulted in a pass, but the introduction of advisories regarding brake disc wear indicates a shift in the vehicle's maintenance profile. Previously, the vehicle maintained a largely clean record, with the notable exception of a major failure in August 2024 due to a fractured nearside front coil spring. While the immediate safety concern of the broken spring was addressed, the current advisories suggest that the vehicle is now entering a period where wear-and-tear components are reaching their service limits. The maintenance trend should be viewed as transitioning from a period of stability into one requiring more frequent attention to consumables. With 65,052 miles recorded over twelve years, the vehicle has averaged approximately 5,421 miles per year. This is considerably lower than typical usage for a premium SUV of this age, suggesting either light commuting or extended periods of standing. While low mileage is often desirable as it reduces wear on the engine, gearbox, and drivetrain, it carries specific risks. Infrequent use can lead to the degradation of rubber components, the settling of moisture in the braking system, and the potential for seals to dry out, which may eventually lead to oil or coolant leaks. During your test drive, pay close attention to the braking performance to address the current advisories. The mention of worn front discs and lipped rear discs suggests that the brake pads and discs are nearing the end of their effective life. Listen for any grinding noises or metallic scraping during deceleration, and feel for any vibration or shudder through the brake pedal or steering wheel, which could indicate warped discs or uneven thickness. Given the previous failure of a coil spring, you should also listen for any clunks or knocks from the suspension when driving over speed bumps or uneven surfaces, as this could indicate further fatigue in the suspension bushes or springs. Due to the low annual mileage, a thorough physical inspection is essential to mitigate risks associated with standing. Check the tyres for sidewall cracking or perishing, as rubber can degrade from age even if the tread depth remains high. Inspect the brake calipers for signs of corrosion or binding, which can occur when a vehicle is not driven regularly. Furthermore, given the 2020 advisory regarding an auxiliary battery malfunction, verify the health of both the main and auxiliary batteries, as low-use vehicles often suffer from insufficient charging cycles. Finally, ensure that all fluids, including brake fluid and engine oil, have been changed based on the calendar rather than just mileage, to prevent chemical degradation.