2014 Mercedes-Benz E 2.1L Diesel · PF14 AEP

The Mercedes-Benz E in question presents a clean but irregular MOT history, with the most recent test in September 2025 at 83,917 miles passing without defects after a prior failure just three weeks earlier at 83,658 miles. The absence of any recorded defects across five annual tests suggests no major structural or mechanical issues have been flagged by the tester, though the sudden failure in August 2025—despite no noted faults—raises questions about whether this was due to a minor oversight or an undocumented issue resolved before retesting. The trend is stable in terms of passing rates, but the lack of advisories or defects over 12 years implies either meticulous maintenance by previous owners or a vehicle that has avoided common wear points. That said, the absence of even minor advisories (such as tyre tread or fluid levels) is uncommon for a vehicle of this age and mileage, warranting closer scrutiny of service records beyond the MOT alone. The mileage accumulation of roughly 6,993 miles per year aligns with typical usage for a 12-year-old vehicle, though the gaps between tests reveal inconsistencies. The jump from 64,121 miles in August 2023 to 73,419 miles in August 2024 (9,300 miles in 12 months) suggests either a period of heavier use or delayed testing, while the subsequent 10,200-mile increase to 83,658 miles by August 2025 indicates another phase of activity. The most striking detail is the near-identical mileage between the failed and passed tests in 2025—just 259 miles apart—pointing to either an immediate retest after a quick fix or an anomaly in the system. Without advisories or defects, there’s no clear pattern of deferred maintenance, but the sparse MOT data leaves room for undocumented issues, particularly in components not routinely checked unless visibly failing. For a buyer, the primary focus should be on the suspension and braking systems, given their critical role in safety and their tendency to degrade without immediate MOT flags. Check for worn suspension bushes, degraded coil springs, or uneven tyre wear, as these often precede binding brakes or alignment issues. The rear brakes, in particular, should be inspected for corrosion or seized calipers, especially if the vehicle has spent time in damp conditions. Structural integrity is less of a concern given the lack of corrosion advisories, but a thorough examination of the sills, wheel arches, and underbody for hidden rust or damage is prudent. Fluid levels—brake, coolant, and power steering—should also be verified, as these are rarely caught by MOT tests unless visibly low or contaminated. The absence of defects doesn’t guarantee reliability, but it does suggest the vehicle has been driven rather than abused, provided no major mechanical work has been deferred.