2021 Mercedes-Benz Sprinter 317 Progressive CDI 1.9L Diesel · SV71 AOT

The most recent DVSA MOT test for this 2021 Mercedes-Benz Sprinter 317 Progressive CDI was conducted on 22 December 2025, resulting in a pass with no defects or advisories recorded. This is a positive outcome, indicating that the issues identified at the prior test on 12 December 2025 have been rectified to a satisfactory standard. However, the cluster of major defects noted at the failure ten days earlier, encompassing an incorrectly adjusted parking brake lever, an inoperative windscreen washer, an offside rear direction indicator showing slight discolouration, a nearside front headlamp aim that was too low, and a missing or compromised nearside front steering rack gaiter, suggests that a period of deferred maintenance or a rushed preparation may have preceded the initial test. The clean pass on the follow-up confirms remedial work was completed, but a prospective buyer should verify that the repairs were carried out to a proper standard, particularly regarding the steering rack gaiter, as a damaged gaiter left unaddressed permits water and grit ingress into the rack, accelerating internal wear and potentially leading to costly replacements. With 98,791 miles recorded over approximately five years, this Sprinter is averaging around 19,758 miles annually, which is notably high for a vehicle of its age and consistent with sustained commercial or fleet operation. Such elevated mileage places additional demand on the powertrain, braking system, suspension components, and clutch or dual-mass flywheel where applicable, and it raises the likelihood of wear-related issues surfacing in the near term. Given the absence of any mileage data prior to the 2024 test, it is difficult to establish a precise accumulation pattern, but the figures suggest the vehicle has been in regular service rather than standing idle. High-mileage diesel commercial vehicles of this type commonly require closer attention to turbocharger condition, diesel particulate filter performance, injector balance, and timing chain or belt integrity, particularly as the odometer advances towards the six-figure threshold. From a practical inspection standpoint, a prospective buyer should focus on areas not always fully covered by routine MOT testing, beginning with a thorough walkaround and underbody examination. The nearside front steering rack gaiter, recently replaced or refitted, should be inspected for correct seating and integrity, and the steering should be tested for any play, knocking, or unevenness on lock-to-lock movement. The headlamp aim should be verified against a level surface, particularly if the vehicle is frequently loaded, as incorrect headlamp geometry can be symptomatic of weak adjustment mechanisms or body settlement. The parking brake lever should be checked for firm engagement and adequate travel, and the rear direction indicator lens should be examined for fading or water ingress that may necessitate replacement. On a test drive, listen for suspension clonks over uneven surfaces, as the Sprinter is known for wear in anti-roll bar bushes, wishbone bushes, and rear leaf spring shackles, and observe whether the vehicle sits level or shows signs of sagging under load. Given the age and mileage profile, several calendar-based service items warrant verification regardless of the clean MOT record. Brake discs and pads should be physically inspected for wear and for corrosion pitting resulting from the vehicle standing between uses, as commercial vans are frequently subject to short operational cycles that promote caliper seizure and uneven disc wear. Tyres should be examined not only for tread depth but also for sidewall cracking or perishing consistent with age, and the spare or tyre inflation system if fitted should be checked. The 12-volt battery should be tested for state of charge and cranking performance, as diesel vans with high electrical loads from ancillaries such as refrigeration units or interior conversions are particularly susceptible to battery degradation. Coolant and brake fluid should be assessed for age-related deterioration, with brake fluid ideally replaced biennially due to its hygroscopic nature. Finally, request evidence of routine servicing, including oil and filter changes at manufacturer-recommended intervals, diesel particulate filter regeneration history, and any prior rectification work relating to the recent MOT failure, as a well-documented service record will provide greater confidence in the long-term mechanical integrity of this high-mileage commercial vehicle.