2012 Mercedes-Benz Viano 2.1L Diesel · K18 WJH

The 2012 Viano failed its MOT on 12 June 2026 at 400,374 miles, and the maintenance trend is clearly worsening. After three consecutive clean passes between 2024 and 2025, the latest test flagged a cluster of new and recurring defects. The offside headlamp is insecure and non-functional on both dipped and main beam, which is a direct roadworthiness and legal compliance failure. Front brake discs are worn, pitted, or scored, and an oil leak persists, having appeared in the 2023 test at 347,686 miles and again now. Suspension advisories are also accumulating, with anti-roll bar linkage bushes and ball joint dust covers deteriorating at both axles. This is not a vehicle that has been maintained to a consistent standard in its most recent years. The mileage pattern tells its own story. Between June 2022 and June 2026, the van covered roughly 68,149 miles in four years, averaging around 17,000 miles annually, which is high but not extreme for a working commercial vehicle. However, the jump from 380,279 miles in June 2025 to 400,374 miles in June 2026 alone accounts for over 20,000 miles in a single year, suggesting intensive recent use. The MOT record itself is sparse, with only five tests logged across four years, and no documented service history to corroborate whether routine mechanical work has accompanied this mileage accumulation. A buyer should approach this van with caution and inspect several areas in person. The front brake discs and pads need immediate measurement, as pitting and scoring at this mileage suggest either deferred replacement or a caliper issue causing uneven wear. The persistent oil leak, noted in both 2023 and 2026, warrants a thorough inspection of the engine and gearbox mounts, sump gasket, and rocker cover seals to determine whether it is a minor seep or a more costly failure. Suspension components, particularly the front anti-roll bar ball joints and rear linkage bushes, should be checked for play, given the recurring advisories. The insecure offside headlamp may point to a cracked mounting bracket or water ingress inside the unit, which could indicate frontal impact damage or long-term vibration fatigue. Beyond the MOT flags, the sheer mileage demands attention to structural integrity. At 400,374 miles, subframe mounting points, sill seams, and floor pans should be inspected for corrosion, especially around the rear suspension pickup points where high-load stress accumulates. The windscreen washer fault is minor but symptomatic of a vehicle where basic checks may have been neglected. Tyre wear has been flagged repeatedly, suggesting alignment or suspension geometry issues that remain unresolved. This van has clearly worked hard, and the recent MOT failure reflects a pattern of deferred maintenance rather than a single isolated fault.