2015 Mercedes-Benz GLA 2.0L Petrol · WG65 AAE

The latest MOT test on the 2015 Mercedes-Benz GLA, conducted on 2026-06-20, resulted in a passing grade, though it revealed persistent advisories that warrant careful attention. The overall maintenance trend over the past four years shows a pattern of recurring issues rather than a clear improvement or stability. While the vehicle passed in 2024 and 2025, the 2024 failure highlighted critical failures—particularly the dangerous condition of near-side front tyre tread depth below the legal minimum of 1.6mm and rear brake pads worn to below 1.5mm—which indicate either neglect or a lack of timely maintenance. The advisories on brake disc wear and tyre edge wear, noted in multiple tests, suggest ongoing friction between components or improper alignment, potentially leading to further degradation if unresolved. The recorded mileage of 74,795 miles for a vehicle aged approximately 11 years reflects a moderate annual usage rate of around 6,800 miles per year, which is within the expected range for this model’s age. However, the consistency of advisories and failures despite this mileage suggests that the vehicle may have been driven under less-than-optimal conditions or that certain systems have been subjected to wear beyond what typical usage would justify. The presence of both tyre and brake-related issues, particularly the near-side front tyre wear and rear brake pad thickness, could imply either excessive braking loads, misalignment, or a history of standing in one position, which accelerates corrosion and friction wear on components. Additionally, the lack of a service history beyond MOT compliance raises concerns about consumable replacements, such as brake fluids or lubricants, which degrade over time even without active wear. To proceed with a thorough inspection, the prospective buyer should prioritise checking the tyre condition beyond the MOT pass, as the near-side front tyre’s edge wear and low tread depth indicate potential structural or alignment issues. Listen for uneven tyre wear patterns during a test drive, which may reveal misalignment or suspension problems. The brake system requires immediate attention: inspect the rear brake pads and discs for further thinning or scoring, and verify that calipers are not binding or seized. Listen for grinding noises during braking, which could signal worn pads or damaged discs. Additionally, examine the brake fluid reservoir for contamination or moisture, as this can exacerbate corrosion in the hydraulic system. For the brake discs, check for warping or excessive pitting, which may require resurfacing or replacement to maintain braking performance and roadworthiness. Beyond the immediate concerns, the buyer should conduct a comprehensive inspection of the vehicle’s standing corrosion, particularly around the wheel arches, exhaust system, and underbody, where moisture and road salt can accelerate rust progression. Given the vehicle’s age and mileage, inspect the tyre sidewalls for signs of perishing or cracking, which can compromise structural integrity and safety. Verify the condition of the 12V battery, ensuring it holds a charge and has no signs of corrosion or swelling, as older batteries may fail unexpectedly. Check the fluid levels in the engine, transmission, and differential, ensuring they are topped up and free from contamination, as time-based degradation in these fluids can lead to premature component failure. Finally, review the service records for any scheduled maintenance, such as suspension bush replacements, exhaust emissions servicing, or timing belt checks, which are critical for long-term reliability. If no service history exists, consider a full mechanical inspection to address potential hidden wear or failures before proceeding with purchase.