2020 Mercedes-Benz GLA 1.6L Petrol · RO67 MCL

A consistent thread running through this GLA's MOT history is a recurring pattern of tyre perishing and cracking advisories, with all four corners flagged across the 2025 and 2026 tests. The most recent test on 3 July 2026 passed with an advisory noting tyre damage or perishing all round, while an earlier failure that day was attributable to an ineffective front wiper rather than any structural or braking concern. The 2024 test likewise flagged the offside front sidewall with a strong-advice notation, and the 2025 test expanded the warning to three tyres. This is a clear and progressive deterioration of the original rubber compound, which has become brittle despite the vehicle's exceptionally low mileage. A headlamp aim issue recorded as a present reason for failure in July 2025 also warranted attention, though it was not flagged again the following year. With only 11,105 miles recorded over six years, this GLA has averaged just 1,851 miles annually, a figure well below typical usage for a premium crossover of this age. The MOT entries align with this picture, showing tests in consecutive Julys from 2024 through 2026, which suggests the vehicle has been kept on the road and presented for annual testing without significant lay-up periods. Mechanically, low mileage of this nature reduces wear on major drivetrain components such as the clutch, turbo, dual-clutch elements and brake friction material, but it does carry implications for items that degrade through age rather than use. Rubber components, coolant hoses, drive belts, brake fluid, and the 12V auxiliary battery all suffer from time-related deterioration regardless of mileage covered, and a six-year-old car with minimal use should be treated with the same age-related scrutiny as a higher-mileage equivalent. Given the persistent tyre perishing flagged across three consecutive tests, prospective buyers should physically inspect all four tyres for sidewall cracking, checking particularly along the outer walls and between the tread grooves where UV and ozone damage typically manifests first. A replacement set of quality tyres should be budgeted immediately, and the wheels themselves examined for any kerb damage that may have occurred during low-speed manoeuvres. On a test drive, listen for any clonks or knocks from the suspension over uneven surfaces, as perished tyres are often accompanied by hardened anti-roll bar bushes and top mounts on a low-use vehicle. The brake pedal should feel firm and progressive without any sponginess, and the steering should remain centralised without pulling, particularly given the previous headlamp aim irregularity which can sometimes correlate with suspension sag or incorrect ride height following a kerb impact. It is also prudent to verify the full service history, as manufacturer warranty and service intervals are time-based rather than purely mileage-dependent on Mercedes-Benz vehicles. The recent wiper failure on the 2026 test, although a minor item, should be confirmed as rectified with a quality replacement blade rather than a temporary fix. Ask for evidence of brake fluid and coolant changes within the recommended intervals, as these are commonly overlooked on low-mileage vehicles where annual services may have been skipped on a mileage basis alone. Finally, a compression test or Mercedes-Benz diagnostic health check would be money well spent, ensuring the engine, transmission and emissions control systems have not been affected by short-trip operation or infrequent use, which can promote moisture accumulation in the oil and exhaust condensate.