2003 Mitsubishi Shogun 3.2L Diesel · RL03 UMM

Structural corrosion and underbody deterioration are the primary mechanical concerns for this vehicle, as highlighted in the pass issued on 2026-07-27. While the record shows a history of passing, the latest inspection identifies corrosion on the nearside rear suspension mounting area and general underbody corrosion obscured by mud. This represents a shift toward structural degradation compared to earlier tests, suggesting that the chassis is now showing significant age-related wear. An accumulation of 174,598 miles over 23 years averages roughly 7,591 miles per year, which is typical for this model. However, there is a notable six-year gap in the MOT history between April 2020 and July 2026. Such a prolonged period of inactivity or undocumented use often correlates with the type of underbody corrosion now being flagged, as stagnant moisture and lack of movement can accelerate rust in chassis mounting points and suspension components. Inspection should focus heavily on the rear suspension mounting areas and the overall state of the underbody. Given the advisory regarding corrosion and mud, a thorough cleaning of the chassis is necessary to determine the actual extent of the metal loss. During a test drive, listen for knocking or clunking sounds from the rear suspension when traversing uneven surfaces, which could indicate that the corrosion is affecting the integrity of the mounting points. The vehicle history also includes previous failures for front lower suspension ball joints and anti-roll bar linkages. While these were rectified in 2017, the high mileage and recent period of standing make these components prone to renewed wear or seizure. Feel for any vagueness in the steering or excessive movement in the front end during low-speed manoeuvres. Additionally, ensure the battery is properly secured to prevent vibration damage, as this was specifically noted as a minor defect in the latest test.