2006 Mercedes-Benz CLS 3.0L Diesel · GP06 AEM

The 2006 Mercedes-Benz CLS has maintained a consistent MOT history with no defects recorded across the last five annual tests, most recently passing on 2 August 2025 at 120,016 miles. This suggests the vehicle has been subjected to regular, thorough servicing and has not experienced any recurring mechanical failures that would warrant advisories or failures. The absence of defects in each test implies the previous owner—or owners—have likely addressed basic maintenance proactively, though this does not preclude hidden issues requiring a professional inspection. The recorded mileage of 120,016 miles over 20 years equates to approximately 6,000 miles per annum, which is typical for a vehicle of this age and model. There are no significant gaps in the MOT schedule, with tests conducted annually without exception, and no abrupt spikes in mileage between tests. This regularity reinforces the likelihood of consistent care, though it does not account for potential off-cycle maintenance or neglect of non-MOT-required components such as timing belts, fuel injectors, or suspension preload. Given the clean MOT record, a buyer should prioritise an in-person inspection focusing on high-wear areas that are not routinely tested. The suspension—particularly coil springs, bushes, and dampers—should be examined for uneven wear or fluid leaks, as these components degrade progressively and are not always captured in MOT tests. Brake systems, including calipers, pads, and discs, warrant scrutiny for uneven wear or binding, especially if the vehicle has been driven in mixed conditions. Additionally, the underbody should be inspected for corrosion, particularly around the sills, wheel arches, and exhaust system, as this model is prone to rust in these areas despite its age. The lack of advisories or defects in the MOT history is a positive indicator, but the vehicle’s age and mileage necessitate thorough checks of less-obvious components such as the timing belt (if applicable), fuel system, and electrical connections. A pre-purchase inspection by a qualified mechanic is strongly advised to confirm the structural integrity of the chassis and drivetrain, as these elements are not always visible during a standard MOT.