2017 Mercedes-Benz GLC 2.1L Diesel · WD17 WFS

The most recent MOT on 2025-08-16 showed a passed result with one critical defect: the nearside front outer drive shaft joint constant velocity boot was severely deteriorated. This is a safety risk, as a failed CV boot can lead to joint failure and loss of drive power. The defect was not present in the 2024-08-22 failed MOT, suggesting it may have developed recently or been overlooked in prior checks. A recurring pattern of suspension and braking issues emerges from the MOT history. Ball joint dust covers on both front and rear suspension arms were repeatedly noted as severely deteriorated (2024-08-22 and 2023-03-14), alongside worn suspension arm bushings and brake disc wear. These issues indicate potential long-term neglect of wear-prone components, which could compromise handling and safety. The 2024-08-22 failed MOT also highlighted front brake pads less than 1.5 mm thick, a serious safety concern requiring immediate replacement. The trend shows worsening risks over time. While 2023 MOTs focused on minor tyre and strut issues, 2024 entries included multiple critical defects, including brake pad thickness and suspension wear. The 2025 MOT addressed some issues but left the CV boot defect unresolved.