2018 Mercedes-Benz GLC 2.1L Diesel · D22 KAY

Recurring failures regarding the nearside front drive shaft joint and persistent advisories for the rear brake discs define the recent mechanical history of this vehicle. While the latest test on 28 April 2026 resulted in a pass, the record shows a repeated failure of the nearside front constant velocity boot in both May 2025 and April 2026, suggesting a recurring issue with this component. Furthermore, the rear brake discs have been flagged as worn, pitted, or scored across multiple tests since May 2025, indicating a long-term degradation of the braking surfaces that has not yet been rectified. An accumulation of 74,698 miles over approximately eight years reflects a typical usage pattern of roughly 9,337 miles per year. This level of use generally results in predictable wear on drivetrain consumables and suspension components. There are no significant gaps in the testing history that would suggest extended periods of dormancy, though the frequency of tests in 2021 indicates a rapid re-test sequence. Particular attention should be paid to the nearside front drive shaft during a test drive. Listen for audible clicking or popping sounds when steering the vehicle through full lock at low speeds, as these are characteristic symptoms of a compromised constant velocity joint following a boot failure. The repeated nature of this specific defect in the MOT records warrants a physical inspection of the boot's integrity to ensure the current repair is robust. The persistent advisories regarding the rear brake discs suggest they are nearing the end of their effective service life. During braking, feel for any pedal judder or vibration, and listen for grinding noises from the rear of the vehicle. Given that these discs have been recorded as pitted or scored since May 2025, they likely require replacement to restore optimal braking efficiency and prevent further wear on the brake pads.