2015 Ford Transit 2.2L Diesel · ST15 OSZ

The most recent MOT test on 2025-08-08 resulted in a passing grade, though it revealed persistent advisories related to corrosion and grease accumulation on the front and rear brake pipes across all axles. Comparing this to the prior test on 2025-08-06, which failed due to a major defect in the offside front suspension wishbone rear bush—indicating excessive wear—it is evident that while the vehicle has not failed a test in the last two years, the underlying issues have not been fully resolved. The recurring advisories on brake pipe corrosion and the previous major suspension failure suggest a pattern of wear and potential underlying structural or component fatigue, warranting careful attention to prevent further degradation. The 2020 test also highlighted a split in the nearside front suspension arm pin or bush, reinforcing the need for a thorough inspection of the suspension system, particularly the wishbone and arm components, to assess whether the wear is progressive or stabilised. The vehicle’s recorded mileage of 161,989 miles at 11 years old represents a high annual usage rate of approximately 14,726 miles per year, which is notably elevated for its age. Such mileage accumulation typically accelerates wear on critical components like brakes, suspension, and drivetrain elements, as seen in the MOT history where suspension bushes and brake pipes have been flagged multiple times. The absence of significant service intervals or long periods of inactivity could also contribute to fluid degradation, such as brake fluid and differential/transmission fluid, which may have lost their effectiveness over time. Additionally, the high mileage may indicate more aggressive driving or operational conditions that exacerbate component stress, necessitating a focus on wear progression and potential fatigue in high-stress areas. For the prospective buyer, the most critical areas to inspect during a test drive and physical examination include the suspension system, particularly the wishbone arms and rear bushings, as the 2020 and 2025 MOT records indicate severe wear or failure in these components. Listen for unusual clunking noises from the front suspension during cornering or over bumps, which may suggest loose or worn suspension arms or bushes. Inspect the brake system thoroughly, checking for uneven brake pad wear, binding calipers, or excessive brake disc thickness, as the advisories on brake pipe corrosion and worn discs suggest potential fluid leakage or hydraulic issues. During the inspection, verify that all brake pipes are free from leaks, corrosion, or grease buildup, which could indicate underlying corrosion or fluid ingress. If the brake pipes appear corroded, consider replacing them promptly to prevent brake failure. Beyond the mechanical checks, address the vehicle’s fluid condition and general maintenance history. Given the high mileage and age, check the brake fluid for contamination or moisture, which can lead to brake fade or failure, and replace it if it has been more than two years since the last service. Inspect the differential and transmission fluids for darkening or sludge, which may require a full flush. Pay particular attention to the battery, as high mileage and prolonged periods of inactivity can lead to corrosion or reduced capacity, especially if the vehicle has been stored or driven infrequently. Finally, examine the tyres for signs of sidewall cracking or perishing, which can compromise tyre integrity and safety, and ensure the tread depth meets the legal minimum of 1.6mm. If the vehicle has been driven at a high annual mileage, consider scheduling a comprehensive mechanical inspection by a qualified technician to assess the wear rate of suspension components, drivetrain elements, and other high-wear areas to prevent unexpected failures.