2006 Mercedes CLS 5.0L Petrol · MX55 UWS

The vehicle is currently roadworthy but the maintenance history reveals a pattern of reactive rather than proactive care. While it passed the most recent test in May 2026 at 116,944 miles, the record shows a significant decline in mechanical standards during late 2024. The trend is currently stable following the resolution of several critical failures, but the cluster of faults in December 2024 and April 2025 indicates that repairs were often deferred until they reached the point of legal noncompliance. At 116,944 miles, this 20-year-old Mercedes reflects low mileage, averaging approximately 5,800 miles per year. However, the data shows a sharp increase in usage between December 2023 and May 2026, where the car covered over 15,000 miles in just seventeen months. This burst of activity likely accelerated the wear on the suspension and braking components. The low overall mileage may have contributed to the degradation of rubber-based parts, as evidenced by the perishing tyres and deteriorated hoses noted across multiple test dates. A buyer must inspect the front suspension thoroughly, as the record shows recurring issues with ball joints, bushes, and track rod ends spanning from 2023 to 2025. The December 2024 failure highlighted excessive corrosion on the rear brake pipes and deteriorated hoses, which necessitates a physical check to ensure the rust has not progressed into the structural mounting. Additionally, the persistent front oil leak noted in both 2024 and 2026 suggests an ongoing seal failure that requires monitoring to prevent it from becoming an excessive leak. The most recent 2026 test also flagged thin brake pads and damaged tyres, indicating that consumable maintenance is currently overdue. The previous failure regarding high emissions and carbon monoxide levels in 2024 suggests the engine management or oxygen sensors may be sensitive, which should be verified during a test drive. Given the history of multiple failures for relatively minor items, the buyer should confirm that all work performed was completed to a professional standard rather than with temporary fixes.