2021 Mercedes-Benz GLC 1.9L Diesel · MM70 XJU

The 2021 Mercedes-Benz GLC presents a clean and stable roadworthiness record through its most recent MOT on 15 July 2025 at 45,005 miles, where it passed with zero defects. The maintenance trend is stable, with no recurring advisories or failures across the three recorded tests. This indicates consistent baseline upkeep, though the absence of defects alone does not guarantee long-term mechanical health, particularly for a five-year-old luxury SUV approaching mid-life service intervals. The annual mileage of approximately 9,000 miles is typical for its age and usage pattern. The intervals between tests show steady accumulation: roughly 6,786 miles between January 2025 and July 2025, and approximately 6,786 miles between January 2024 and January 2025. There are no alarming gaps or sudden spikes in mileage that would suggest long periods of neglect or excessive short-trip use. The data is sparse but clean, with no mileage anomalies to raise concern. Despite the clean MOT record, a buyer should conduct a thorough in-person inspection focused on components not always captured during a standard MOT. The GLC's air suspension system, where fitted, deserves close scrutiny for leaks or uneven ride height, as air struts and compressors commonly fail outside of testable criteria. Brake calipers and discs should be examined for uneven wear or corrosion, particularly on rear axles where binding issues often develop silently. Underbody corrosion around subframes, suspension mounting points, and inner wing arches warrants inspection, as Mercedes-Benz models of this era can develop localised rust that MOT testers may not flag until advanced. Tyre condition and wheel alignment should be checked against the recorded mileage, as 45,000 miles on a heavy SUV often means at least one set of replacement tyres. The exhaust system, including diesel particulate filters on diesel variants, should be assessed for efficiency and soot buildup, especially if the vehicle has seen predominantly short urban trips. A pre-purchase inspection by a Mercedes-Benz specialist is advisable to interrogate onboard diagnostics for stored fault codes that would not appear on an MOT record.