2016 Mercedes-Benz Citan 1.5L Diesel · AV66 FPD

The most recent MOT test on the 2016 Mercedes-Benz Citan, conducted on 2025-12-03, resulted in a pass with two advisories: front brake discs showing moderate wear, pitting, or scoring but not to a point that compromises structural integrity, and front brake pipe corrosion with grease accumulation. While this latest test is clean of critical failures, the vehicle’s MOT history reveals a pattern of recurring issues that suggest ongoing wear and potential underlying wear-and-tear concerns. Notably, the 2024-10-25 test passed with no defects, followed by a failure in the same month for critically low brake fluid levels, indicating a possible leak or fluid consumption issue that was not addressed between tests. Additionally, the 2022 and 2023 MOT records show repeated advisories for front tyre wear nearing legal limits and brake pipe corrosion, reinforcing the need for proactive maintenance. These trends suggest that while the vehicle has maintained roadworthiness through recent tests, the cumulative impact of high mileage and wear-related advisories warrants careful attention to prevent escalation into more serious mechanical failures. The recorded mileage of 138,671 miles for a vehicle aged approximately ten years represents a usage rate of around 13,867 miles per annum, which is exceptionally high for its class and age. Such mileage accumulation typically accelerates wear on consumables like brake pads, tyres, and suspension components, as well as fluid degradation and internal component fatigue. The absence of significant mileage gaps—suggesting prolonged periods of inactivity—could exacerbate issues such as standing corrosion in brake systems, fluid degradation from stagnation, and potential tyre sidewall perishing from age-related cracking. Additionally, high mileage often correlates with increased stress on drivetrain components, exhaust systems, and structural integrity, particularly if the vehicle has been driven under heavy loads or in challenging conditions. The rapid accumulation of miles may also indicate a history of frequent use, which could have contributed to the observed brake fluid depletion and tyre wear advisories. For a prospective buyer, the most critical areas to inspect during a physical examination of this Mercedes-Benz Citan include the brake system, suspension, and tyres, given the recurring advisories and high mileage. Begin with the brake system: check for signs of brake fluid leaks under the vehicle, particularly around the brake pipes, which show corrosion and grease accumulation. Listen for abnormal brake pedal feel—such as sponginess, vibration, or excessive travel—during a test drive, which may indicate air in the system, warped discs, or binding calipers. Inspect the front brake discs for uneven wear, pitting, or glazing, and measure their thickness against the manufacturer’s specifications; if they are worn to within 1.5mm of the minimum legal limit, replacement is strongly advised. The tyres should be examined for sidewall cracking, which can compromise structural integrity, and check for uneven tread wear patterns that may signal alignment or suspension issues. During the test drive, monitor for clunking noises from the suspension, which could indicate worn suspension bushes or coil springs, and check for excessive play in the steering wheel, which may signal binding or damaged steering components. Beyond the immediate advisories, this vehicle’s age and mileage necessitate a comprehensive, time-based maintenance schedule. Given the high mileage and the presence of fluid-related issues, ensure the brake fluid is replaced according to manufacturer recommendations—typically every two years or 40,000–60,000 miles, whichever comes first. The brake fluid in the 2024 test was critically low, suggesting either a leak or fluid consumption, so addressing this promptly is essential to prevent brake system failure. The brake pipe corrosion and grease accumulation should prompt inspection of the entire brake system for leaks and the replacement of corroded components if necessary. The tyres, though not yet at the legal limit, should be checked for tread depth and sidewall condition; if they are worn to within 1.5mm of the legal minimum, replacement is advisable. Additionally, given the vehicle’s age, consider a thorough inspection of the 12-volt battery and starter motor, as high mileage can accelerate wear in these components. Finally, check the service history for any missed or deferred maintenance, particularly for fluid servicing, exhaust emissions checks, and structural integrity assessments, as these can become more critical with age. A thorough inspection of the exhaust system for leaks or corrosion is also recommended, given the high mileage and potential for carbon buildup affecting performance and emissions compliance.