2015 Mercedes-Benz GLA 2.1L Diesel · CK15 HVE

The most recent MOT record for this 2015 Mercedes-Benz GLA, tested just five weeks ago at 123,432 miles, shows a concerning pattern of repeated failures despite no defects being logged. The vehicle failed twice in December 2025—just four days apart—before passing on the final attempt, a pattern that suggests either a persistent but intermittent issue or administrative oversight rather than genuine mechanical reliability. The previous cycle in late 2024 mirrored this exact sequence: a failure followed by a pass within weeks, both at the same mileage (111,684). While the absence of recorded defects implies the tester may not have identified critical faults, the repeated failures raise questions about whether underlying issues—such as inconsistent brake performance, suspension wear, or electrical gremlins—were overlooked or masked by temporary fixes. The mileage progression of 123,432 miles over 11 years averages roughly 11,200 miles annually, which is typical for a vehicle of this age and usage profile. There are no extended gaps suggesting neglect, nor are there abrupt spikes that would indicate aggressive driving. However, the identical mileage figures for the 2024 failures (111,684) and the 2025 pass (123,432) suggest the vehicle may have sat unused for extended periods between tests, potentially allowing corrosion or fluid degradation to develop. The most recent test date, just five weeks prior to today, is acceptable for current roadworthiness, but the history implies a lack of proactive maintenance between cycles. Given the repeated failures without recorded defects, a buyer should prioritise an independent inspection of the brake system—particularly the rear calipers and pads, which are common culprits in intermittent binding or noise issues. The suspension components, including coil springs, bushes, and dampers, warrant close examination for wear or fluid leaks, as these often manifest as minor faults that escalate over time. Structural integrity should also be checked, especially around the wheel arches and sills, where corrosion could compromise safety without being immediately obvious. Electrical systems, including the ABS and traction control, may have been the source of the failures, so testing for erratic sensor readings or wiring faults is advisable. The absence of defects in the MOT does not guarantee these areas are sound—it merely indicates they were not flagged during the test.