2021 Mercedes-Benz Sprinter 314 Progressive CDI 2.1L Diesel · BU71 FSJ

The most recent MOT test on 29 June 2026 resulted in a pass, with two recorded advisories concerning play in the steering rack inner joints on both the nearside and offside. This represents a stable test outcome overall, as the vehicle has cleared the statutory roadworthiness criteria, but the dual advisory on the steering rack is a clear mechanical concern that warrants immediate investigation. When a steering rack inner joint exhibits play, it typically indicates wear within the rack itself or its mounting, rather than a simple worn track rod end. On a test drive, this would commonly manifest as vagueness or a slight delay in steering response, a knocking or clunking noise emanating from the front of the vehicle when traversing uneven surfaces or during full-lock manoeuvres, and potentially uneven or feathered wear patterns on the front tyres due to the altered geometry. Given that both sides are affected, the wear is likely systemic to the rack assembly itself, meaning replacement of the complete steering rack is the probable corrective course rather than a minor linkage repair. Considering the recorded mileage of 132,318 miles against the vehicle's age of approximately five years, this equates to an annual accumulation of roughly 26,464 miles. For a commercial vehicle such as the Mercedes-Benz Sprinter 314, this figure, while substantial, falls within the expected operational range for a working van and does not present as anomalously high. The annual mileage suggests consistent and demanding use, likely involving significant load carrying, frequent stop-start urban driving, and extended motorway journeys. Such usage patterns accelerate wear on heavy-duty components including clutch assemblies, dual-mass flywheels, turbocharger systems, and suspension components, all of which are subjected to considerable stress in commercial applications. The historical MOT data reveals a recurring pattern of brake and tyre-related advisories, alongside a notable failure in July 2025 due to an inoperative offside parking brake. The parking brake failure is particularly significant, as it indicates a fault within the rear brake caliper mechanism, likely a seized or sticking caliper piston or a compromised handbrake cable or actuator, which resulted in the vehicle failing to hold on an incline. The accompanying advisory regarding rear brake pads wearing thin further suggests that the braking system on this vehicle is under considerable strain. When inspecting the vehicle, it is advisable to physically examine the rear brake pads for remaining friction material, check the rear brake discs for scoring or lipping, and test the operation of the parking brake on an incline to ensure firm engagement without excessive travel. Additionally, the advisories concerning worn front tyres indicate a pattern of edge wear, which is frequently symptomatic of incorrect tracking, worn suspension components, or the previously noted steering rack play. Given the combination of high mileage and the specific advisories recorded, a prospective buyer should prioritise a thorough mechanical inspection focusing on the steering and braking systems, alongside several age and usage-related considerations. The front tyres should be inspected for both tread depth and, critically, for signs of sidewall cracking or perishing, which can occur even on adequately treaded tyres due to age and UV exposure, particularly given the vehicle's commercial usage profile. The 12V battery, vital for the Sprinter's numerous electrical systems and start-stop functionality, should be load tested, as commercial vehicles often experience shortened battery life due to frequent short journeys and high parasitic loads. Furthermore, a visual inspection beneath the vehicle for fluid leaks from the steering rack, engine oil, and differential is prudent, while verifying the service history for evidence of timely replacement of brake fluid, which degrades hygroscopically over a two-year cycle regardless of mileage, and AdBlue system maintenance, which is a known service interval requirement for this generation of Sprinter.