2017 Mercedes-Benz GLA 1.6L Petrol · KX17 WRG

The most recent MOT tests on this 2017 Mercedes-Benz GLA, conducted on 2025-06-23 , reveal an unusual but technically stable roadworthiness pattern. The vehicle passed one test and failed the other on the same date—both at 49,194 miles —with no defects or advisories recorded. This suggests the tester may have applied inconsistent criteria or that the failure was procedural rather than mechanical. The preceding test in 2024-06-26 at 46,111 miles also passed without issues, indicating no obvious worsening of mechanical conditions over the past year. However, the 2023-07-21 tests—both pass and fail at 41,159 miles —mirror the 2025 anomaly, raising questions about whether the vehicle was subjected to repeated MOT retests rather than genuine recurring faults. Without further context, the trend appears stable in terms of mechanical failures, but the procedural inconsistencies warrant scrutiny. The recorded mileage of 49,194 miles over 9 years equates to approximately 5,466 miles per year , which is unusually low for a vehicle of this age. This suggests either light usage or prolonged periods of inactivity, both of which can accelerate certain forms of wear, particularly in suspension components, seals, and electrical systems. Notably, there is a 5,083-mile gap between the 2024-06-26 and 2025-06-23 tests, followed by another 49,194-mile jump —though the latter is the total recorded mileage, not an incremental change. The lack of intermediate mileage data makes it impossible to confirm whether the vehicle was driven regularly or stood unused during this period. If the latter, fluid degradation (e.g., brake fluid, coolant, power steering) could have occurred without visible signs. Given the absence of recorded defects, the primary focus for an in-person inspection should centre on suspension integrity —particularly rear suspension bushes and coil springs—due to the low mileage but extended age. Check for binding brake calipers or worn pads , as repeated MOT retests without faults could indicate subtle brake system issues. Exhaust emissions should also be monitored, as the lack of advisories might mask minor catalytic converter or sensor inefficiencies. Corrosion around wheel arches, sills, and underbody should be examined, as standing vehicles are prone to rust development despite low mileage. Finally, verify the condition of the battery and electrical connections , as prolonged inactivity can degrade these components. While the MOT history suggests no major mechanical failures, these areas demand thorough verification.