2013 Mercedes-Benz CLS 2.1L Diesel · WJ63 CGX

The vehicle presents a concerning roadworthiness profile characterized by a trend of deferred maintenance and recurring mechanical neglect. While it passed its most recent test in October 2025 at 106,631 miles, this followed a significant failure just one day prior involving critical safety defects on the tyres. The transition from a pass in 2024 to a failure with exposed cords and structural concerns in 2025 suggests that the owner only addresses faults when forced to by the MOT tester, rather than performing preventative maintenance. The mileage pattern is remarkably consistent for a 13-year-old vehicle, averaging approximately 8,000 miles per year. The record shows steady growth from 86,862 miles in October 2023 to 106,631 miles in October 2025, representing an increase of roughly 10,000 miles annually. However, this moderate usage does not offset the quality of care observed, as the recurring presence of severe corrosion and suspension issues across multiple years indicates that the vehicle is suffering despite the relatively low annual mileage. A physical inspection must prioritise the rear sub-frame, which the tester flagged for corrosion in both 2023 and 2025. Although currently noted as not seriously weakened, structural rust on a Mercedes component is a progressive issue that will eventually lead to a failure. The front brake pipes have been flagged for corrosion and grease coverage consistently since 2023; the presence of grease on brake lines often suggests an attempt to hide weeping leaks from inspectors, necessitating a thorough check of the hydraulic integrity. The buyer should also scrutinise the suspension and alignment, given the history of fractured coil springs in 2023 and repeated uneven tyre wear in 2024 and 2025. The consistent failure for tyres worn on edges points to persistent geometry issues or worn bushes that remain unaddressed. Given that the front brake discs were noted as pitted and scored in the latest test, the entire front braking system is likely nearing the end of its functional life and requires immediate budgetary consideration.