2015 Mercedes-Benz Citan 1.5L Diesel · WT15 AEP

The 2015 Mercedes-Benz Citan has maintained a clean MOT history since its most recent test on 2 May 2025, with no defects recorded at 253,700 miles. This suggests a stable roadworthiness trend over the past year, though the absence of advisories or minor faults in any test implies either meticulous maintenance or a vehicle that has deferred critical wear until the latest possible moment. The last failure—an anomaly in August 2021—was unusual given the lack of defects in surrounding tests, and it does not appear to have recurred, which could indicate a one-off oversight rather than a systemic issue. However, the 2022 and 2023 tests were conducted with only a 29,000-mile gap, which is unusually short for a vehicle of this age, raising questions about whether the owner prioritised MOT compliance over regular servicing. The recorded mileage of 253,700 miles over 11 years equates to approximately 23,000 miles annually, a rate significantly higher than the UK average for a vehicle of this class. This suggests either intensive commercial use or prolonged periods of active service rather than storage. The most notable mileage jump occurred between the 2021 failure and the 2022 pass, where the odometer increased by 10,463 miles in just over a year—a rapid accumulation that may correlate with the brief failure period. The gap between the 2023 and 2025 tests, however, spans 29,000 miles, which is unusually long for a vehicle without documented servicing. While this could reflect a single owner’s diligence in deferring MOTs, it also raises concerns about whether other maintenance tasks—such as brake fluid changes, suspension servicing, or differential inspections—were similarly delayed. Given the lack of recorded defects, the most critical areas for an in-person inspection should focus on components that typically fail silently or degrade over high mileage without immediate MOT consequences. The suspension—particularly the rear coil springs, bushes, and shock absorbers—will need scrutiny for uneven wear, fluid leaks, or binding movement, as Mercedes-Benz vehicles of this age are prone to suspension fatigue. Brake systems, including rear calipers (which often bind or seize), disc thickness, and rotor runout, should be checked for uneven wear or corrosion, especially given the high mileage. Structural integrity of the chassis and subframe should be examined for signs of rust penetration or weld fatigue, particularly around wheel arches, sills, and exhaust mounts, where corrosion can compromise safety without triggering an MOT failure. Finally, the exhaust system should be inspected for leaks or excessive rust, as catalytic converter failures or cracked manifolds are common in diesel models of this era and often go undetected until emissions tests fail.