2007 Mercedes-Benz CLS 3.0L Diesel · KN57 HNH

The most recent MOT test on the 2007 Mercedes-Benz CLS, conducted on 2026-03-13, resulted in a clean pass with no recorded defects, marking a continuation of a stable maintenance record. Over the past seven years, the vehicle has consistently passed MOT assessments without any failures, though the 2023 test did include two advisories related to tyre wear and sidewall damage. These advisories suggest that while the vehicle has maintained roadworthiness, the tyres have experienced some irregular patterns—uneven wear on the front tyres and minor side-wall damage on all four—indicating either improper alignment, incorrect tyre pressure, or uneven load distribution. The absence of failures in subsequent tests implies that these issues have either been addressed or are not progressing to critical levels, but the buyer should remain vigilant regarding tyre health moving forward. The recorded mileage of 76,253 miles for a vehicle aged approximately 19 years represents a notably low annual usage rate of around 4,013 miles per year. This is significantly lower than the typical wear rate for a car of this age, which often accumulates between 10,000 and 15,000 miles annually under normal conditions. Such a low mileage profile could suggest prolonged periods of inactivity, particularly if the vehicle has been stored for extended durations, which can exacerbate issues like corrosion, fluid degradation, and component binding. For example, standing brakes may develop corrosion on brake discs or binding calipers due to moisture exposure, while fluids like brake fluid and differential oil can degrade over time even without use. Additionally, suspension components such as coil springs, bushings, and dampers may exhibit signs of stiffness or wear from lack of movement, potentially leading to clunking noises during cornering or uneven ride quality. Given the clean MOT history and the relatively low mileage, the buyer should conduct a thorough physical inspection to address potential age-related and usage-specific concerns. First and foremost, the tyres should be examined closely for signs of sidewall perishing or cracking, which can compromise structural integrity at high speeds or in adverse conditions. The vehicle’s 12V battery should be tested for voltage output and overall health, as prolonged disuse can lead to sulphation or reduced capacity. The brake system should be inspected for corrosion on brake discs, particularly on the front where standing corrosion is most likely, and for any signs of binding or uneven wear that could indicate caliper issues. The suspension should be checked for excessive play in strut mounts, worn suspension bushes, or damaged coil springs, which may result in clunking noises when driving over bumps or uneven surfaces. Additionally, the fluid levels and condition of the engine oil, differential oil, brake fluid, and coolant should be assessed, with a focus on any signs of sludge, contamination, or degradation that could indicate time-based servicing is overdue. The engine compartment and undercarriage should be scrutinised for signs of rust or corrosion, especially around wheel arches, exhaust manifolds, and the subframe, as prolonged storage can accelerate these issues. The exhaust system should be inspected for leaks, corrosion, or disconnections, which could lead to emissions-related failures or reduced performance. Finally, the vehicle’s service history should be verified, particularly for fluid changes and major servicing intervals, as the CLS model benefits from regular servicing to maintain reliability. Given the vehicle’s age and low mileage, any fluid servicing should be prioritised to prevent premature wear or failure of critical components. If the buyer suspects that the vehicle has been stored for extended periods, a comprehensive pre-purchase inspection by a qualified mechanic is strongly recommended to identify any latent issues that may not be apparent during a routine MOT.