2013 Mercedes-Benz Citan 1.5L Diesel · SL63 MPZ

The most recent MOT test, conducted on 2023-04-29, resulted in a failure due to a critical reduction in service brake efficiency, alongside several advisories that would have otherwise passed. This outcome follows a pattern of fluctuating results, with the vehicle passing in 2022 and 2021 but failing twice in the preceding two years, particularly in 2021 and 2023. The recurring advisories on tyre wear—both front and rear—suggest ongoing or accelerated wear patterns, while the brake disc condition and drive shaft boot deterioration indicate that wear management has not been consistently addressed. The presence of major failures in 2021, specifically corrosion in the rear brake pipes, highlights a history of neglect in critical corrosion-prone areas, which could have escalated with continued high-mileage usage. The recorded mileage of 224,924 miles for a vehicle aged approximately 13 years represents an unusually high annual mileage of around 17,302 miles, which is significantly above the average for its class. This level of usage is particularly concerning given the vehicle’s age, as it accelerates wear on consumables such as brake pads, tyres, and suspension components, as well as potential long-term damage to drivetrain elements like the constant velocity joints and brake pipes. The absence of substantial mileage gaps between MOT tests suggests either consistent high usage or a lack of regular maintenance, both of which contribute to the observed defects. The rapid accumulation of miles may also imply exposure to harsh driving conditions, such as frequent stop-and-go traffic or off-road use, which can exacerbate tyre wear and brake system degradation. Given the vehicle’s history of MOT failures and recurring advisories, the prospective buyer should prioritise a thorough inspection of the braking system. The brake efficiency failure from 2023-04-29 indicates that the service brakes may be compromised, potentially due to worn brake pads, degraded brake fluid, or binding calipers. During a test drive, listen for uneven brake pedal travel, pulsations or shuddering under braking, or a spongy or soft pedal feel, which could signal warped discs, fluid contamination, or hydraulic issues. Inspect the brake discs for excessive wear, scoring, or glazing, and check for any signs of fluid leaks around the brake calipers or master cylinder. Additionally, the severely deteriorated near-side outer drive shaft CV boot from 2023-04-29 suggests a risk of oil leaks or transmission fluid loss, leading to bearing failure or drivetrain damage. Look for oil stains under the vehicle, listen for unusual noises during acceleration or gear changes, and check for play in the driveshaft if it is accessible. For the tyres, which have been flagged as worn close to the legal limit in multiple MOTs, the buyer should verify the remaining tread depth and overall condition beyond the legal minimum. Given the high mileage and repeated advisories, the tyres may be approaching or exceeding their useful life, particularly if the wear is uneven or concentrated on the edges, which can indicate misalignment or suspension issues. Check for sidewall cracks or perishing, which can compromise tyre integrity and safety, especially with the vehicle’s age. The rear brake pipes, which failed due to corrosion in 2021, should be inspected for signs of rust, cracks, or structural weakness, as corrosion can lead to brake fluid leaks or failure. If the pipes are accessible, consider replacing them if they show significant corrosion, as this is a critical safety risk. Finally, address the fluid servicing needs: given the vehicle’s age and high mileage, check the brake fluid for contamination or degradation, and consider replacing it if it has not been serviced in over two years. Additionally, inspect the coolant, transmission fluid, and differential fluid for signs of degradation or leaks, and ensure all fluids are topped up to the correct levels.