2018 Mercedes-Benz CLS 2.9L Diesel · X141 ALW

Recurring brake disc surface degradation and emerging suspension play define the recent roadworthiness profile of this Mercedes-Benz CLS, which successfully passed its most recent MOT on 24 June 2026. While the vehicle maintained a clean record between 2022 and 2024, the last two annual inspections have consistently flagged the front brake discs for pitting and scoring. The introduction of slight play in the nearside front lower suspension ball joint during the 2026 examination, alongside a tyre puncture, indicates a shift from a period of defect-free testing to the onset of component wear typical of a vehicle reaching this age. With an odometer reading of 42,024 miles over eight years, the car has averaged approximately 5,253 miles annually. This low-intensity usage pattern suggests the vehicle has spent significant periods stationary, which can lead to the specific brake disc surface corrosion noted in the MOT history. While lower mileage often preserves drivetrain components, it does not exempt the vehicle from the fatigue of rubber bushings and seals or the surface oxidation of braking surfaces that occurs when a car is not driven frequently enough to keep components clean and lubricated. Prospective buyers should prioritise a thorough inspection of the braking system during a test drive. The recurring advisories regarding pitted and scored discs necessitate a check for any vibration or pulsing through the brake pedal under moderate to heavy braking, which would indicate that the discs have warped or developed uneven surface contact. Furthermore, the slight play identified in the nearside front lower suspension arm requires physical verification; listen closely for any metallic knocking or clicking sounds when navigating uneven road surfaces, speed bumps, or tight low-speed turns, as these are primary indicators that the ball joint or associated bushes are nearing the end of their service life. Beyond the specific flagged items, the presence of a nail in the offside rear tyre requires immediate attention, as this compromises the structural integrity of the tyre wall and necessitates a professional assessment for repair or replacement. Given the history of edge wear on previous sets of tyres, it is also advisable to inspect the current tyre treads for uneven wear patterns, which can point to underlying alignment issues. A professional alignment check is recommended to ensure that the suspension geometry is within manufacturer specifications, thereby preventing premature tyre degradation and ensuring the handling characteristics remain consistent with the vehicle design.