2009 Mercedes-Benz Vito 2.1L Diesel · HV09 OPH

A persistent theme across the MOT record is corrosion encroaching on structural mounting points and brake flexi‑pipes, suggesting a gradual under‑body deterioration that has not yet reached a safety‑critical threshold. The latest test on 29 April 2024 recorded a pass but flagged near‑side and off‑side chassis corrosion within 30 cm of mountings, along with general under‑body rust, echoing similar advisories from the previous three years. Although no outright failures have been logged since the 2020 stop‑lamp defect, the recurring corrosion advisories indicate a pattern that warrants close scrutiny. At 214,591 mi the vehicle averages roughly 12,600 mi per year, a mileage level that is high for a 2009 model and implies accelerated wear on consumables such as suspension bushings, brake components and drivetrain bearings. The MOT chronology shows no significant gaps in testing, with annual inspections from 2018 onward, so the mileage progression appears steady rather than the result of prolonged storage. Nonetheless, the combination of high mileage and documented corrosion raises the likelihood of fatigue in load‑bearing parts and the need for proactive component replacement. When inspecting the under‑body, pay particular attention to the areas identified in the advisories: examine the near‑side and off‑side chassis rails for flaking or deep rust, probe the subframe mounting zones for softness or cracking, and check the rear and front brake flexi‑pipes for signs of external corrosion, grease deposits or cracking that could lead to fluid loss. On the road, listen for metallic knocks over bumps that may betray compromised coil springs or worn rear suspension arms, and feel for any steering pull or uneven brake pedal travel that could indicate deteriorated brake pipe integrity or weakened mounting points. Confirm that all external lighting, especially the near‑side stop lamp that previously failed, operates correctly, and verify that the off‑side front mirror is securely fixed without excess play. A thorough brake test—steady pedal pressure, no pulsation, and consistent pedal height—will help reveal hidden flexi‑pipe or disc issues that the MOT advisories could not quantify. If any of these checks reveal abnormal symptoms, budgeting for corrosion remediation, brake‑line refurbishment and possible suspension component replacement will be essential to maintain roadworthiness.