2012 Mercedes-Benz Vito 2.1L Diesel · FP12 MXM

The most recent MOT inspection on 12 May 2025 resulted in a pass, but the vehicle's maintenance trajectory is concerning and shows signs of worsening mechanical instability. While the vehicle passed, the immediate history reveals a significant failure in May 2025 involving critical safety and emissions systems, including high exhaust emissions, parking brake inefficiency, and malfunctions in both the engine management and supplementary restraint systems. The transition from a major failure involving engine and safety light malfunctions to a pass with advisories regarding leaking injectors and excessive engine oil levels suggests that while the immediate failures were rectified, the underlying engine health and fuel system integrity remain problematic. With 229,309 miles recorded over 14 years, this Mercedes-Benz Vito has averaged approximately 16,379 miles per year. This is relatively high mileage for a commercial vehicle of this age, indicating consistent, heavy usage rather than long periods of standing. High mileage of this magnitude places significant cumulative stress on the drivetrain, suspension components, and structural integrity. The high usage rate explains the presence of wear-related defects, but the combination of high mileage and recent engine-related failures suggests the vehicle is approaching a stage where major component replacement or significant overhaul may be required to maintain reliability. A prospective buyer must exercise extreme caution regarding the engine and fuel system. The recent advisory for a leaking injector combined with a previous failure for excessive exhaust emissions is a major red flag. A leaking injector can cause poor fuel economy, rough idling, excessive smoke, and, if left unaddressed, can lead to catastrophic engine damage such as piston melting or scoring. During a test drive, listen for irregular diesel knocking, uneven idling, or hesitation under acceleration. Furthermore, the advisory regarding engine oil being above the maximum level suggests potential issues with fuel dilution or improper servicing, which can compromise oil film strength and lead to premature bearing wear. Structural and mechanical wear also require close scrutiny. The MOT history shows a persistent pattern of corrosion on the inner sills and seat belt anchorage areas, which, while currently noted as not affecting structural rigidity, indicates an ongoing battle with oxidation that will eventually compromise the vehicle's integrity. The steering system has also shown signs of wear, specifically regarding the steering column bearing and universal joint, so you should check for any play or notched feeling through the steering wheel. Finally, given the history of parking brake failures and previous tyre tread issues, inspect the brake discs for heavy corrosion and the calipers for signs of binding, and ensure all tyres have ample tread and show no signs of uneven wear caused by worn suspension bushes or steering geometry issues.