2016 Mercedes-Benz GLA 2.1L Diesel · EK66 XNN

The latest MOT test on 2026-01-20 resulted in a passing grade, but the vehicle’s maintenance history reveals a pattern of recurring issues that suggest ongoing wear and potential neglect. While the 2025-02-04 test was clean, the preceding failures in 2025-02-04—including a malfunctioning Engine Management System (MIL) indicator and misaligned front headlamps—highlight persistent electrical and optical concerns. The 2024-01-26 failure for a split constant velocity (CV) boot on the near-side front drive shaft joint is particularly concerning, as this indicates chronic ingress of contaminants into the drivetrain, which can accelerate bearing wear and joint failure over time. The fact that these defects recurred despite previous MOT passes underscores a lack of consistent servicing, leaving critical components exposed to accelerated degradation. The vehicle’s recorded mileage of 122,426 miles at the time of this assessment represents a high annual usage rate of approximately 12,243 miles per year, which is notably elevated for a 10-year-old GLA. Such mileage accumulation typically correlates with increased wear on consumables like brake pads, suspension components, and drivetrain elements, particularly if the vehicle has been driven under heavy or aggressive conditions. The absence of significant mileage gaps suggests sustained operational use, which may have contributed to the observed CV boot failure and potential brake pad thinning. However, without additional context on driving habits or service records, it is impossible to determine whether this mileage is typical for the vehicle’s usage profile or indicative of excessive stress. Given the recurring MOT advisories and failures, the prospective buyer should prioritise a thorough mechanical inspection to confirm the severity of the CV boot damage and assess the condition of the drivetrain. Listen for unusual noises during acceleration, particularly from the near-side front axle, as a grinding or whining sound could indicate bearing failure or a failing joint. Inspect the CV boots visually for further splits or signs of wear, and check for excessive play in the wheel alignment, which may suggest misalignment or suspension component wear. The thin brake pads noted in the 2026 MOT advisory warrant immediate attention, as they may require replacement within the next 500–1,000 miles to prevent overheating, warping, or reduced braking performance. Additionally, verify that the missing near-side front wheel fixing (likely a lug nut or bolt) has been rectified, as this is a critical safety issue that must be addressed before the vehicle is put into service. Beyond the immediate concerns, the buyer should conduct a comprehensive physical inspection for signs of standing corrosion, particularly on the undercarriage, wheel arches, and brake components, as prolonged idling or infrequent use can accelerate rust formation. Check the tyre tread depth and sidewall condition, as the age of the vehicle—10 years—may have led to sidewall cracking or perishing, which can compromise structural integrity and safety. Test the 12V battery and alternator for adequate charge retention and electrical output, as the MIL failure in 2025 suggests potential electrical system issues that could recur. Finally, verify that all fluids—oil, coolant, brake fluid, and transmission fluid—are at the correct levels and free from contamination, as these fluids degrade over time regardless of mileage. If the vehicle has been stored for extended periods, consider a full fluid top-up and a check for any fluid leaks, as standing vehicles are particularly vulnerable to fluid loss and corrosion. Service book stamps should be reviewed to ensure that scheduled maintenance, such as suspension servicing and brake inspections, has been documented.