2021 Mercedes-Benz Sprinter 314 Progressive CDI 2.1L Diesel · OY71 WDR

High annual mileage and a pattern of significant mechanical failures characterize this vehicle's recent MOT history, particularly regarding electrical systems and braking components. The most recent test on 11 December 2025 resulted in a pass, but this followed a severe failure just six days prior that included a dangerous defect for nearside rear brake pads measuring less than 1.5 mm thick. The record shows a recurring issue with the engine Malfunction Indicator Lamp (MIL) being inoperative or indicating a fault, which was flagged in both November 2024 and December 2025. This suggests a persistent electrical or sensor-related fault within the engine management system that requires verification. With 112,673 miles recorded over approximately five years, this Sprinter has averaged roughly 22,535 miles per year, which is significantly higher than standard domestic usage. This intensive usage profile typically accelerates the wear on heavy-duty commercial components, specifically within the suspension, braking systems, and drivetrain. The high mileage context explains the frequency of consumable replacements, but it also necessitates a much closer inspection of structural and mechanical integrity, as the components are subject to higher thermal and physical stress than a lower-mileage equivalent. Prospective buyers should pay close attention to the steering and front-end suspension during a test drive. The MOT history has flagged play in the nearside track rod end ball joint and previous advisories regarding play in the steering rack inner joints. On the road, these defects often manifest as a vague or wandering sensation through the steering wheel, or audible knocking and clunking noises when navigating uneven surfaces or turning the wheel at low speeds. It is essential to ensure these steering linkages have been fully addressed and are no longer showing signs of excessive movement. The recent history of brake pad failure and lighting issues also warrants a thorough physical inspection. Given the dangerous failure for nearside rear brake pad thickness, the entire braking system, including calipers and discs, should be checked for uneven wear or binding. Additionally, because the supplementary restraint system (SRS) warning lamp was flagged as indicating a fault in December 2025, the airbag and seatbelt pretensioner systems must be confirmed as fully operational. Any warning lights illuminated on the dashboard during the test drive, particularly for the engine or safety systems, should be treated as a critical failure of the vehicle's reported roadworthiness.