2011 Mercedes-Benz S-Class 3.0L Diesel · LL11 KYZ

The vehicle most recently passed its MOT on 24 September 2025, but the overall maintenance trend is concerning. A review of the history reveals a pattern of reactive repairs and recurring advisories, particularly regarding the braking system and tyre wear. The fact that the vehicle failed its most recent test shortly before passing suggests that essential maintenance is being deferred until the point of legal failure, which is a red flag for the long-term upkeep of a high-end luxury saloon. With a recorded mileage of 153,887 miles over approximately fifteen years, the vehicle has averaged roughly 10,259 miles per year. This is considered typical usage for this class of vehicle. However, at this mileage, the drivetrain, suspension bushes, and various rubber components are reaching the end of their natural service life. Prospective buyers should expect significant wear on all consumables and should verify if major interval services, such as gearbox oil changes or cooling system refreshes, have been performed. Immediate attention is required for the rear drive shaft constant velocity boots, which were noted as severely deteriorated in the latest test. During a test drive, listen for rhythmic clicking or clunking sounds from the rear when accelerating or turning, as torn boots allow grease to escape and contaminants to enter, leading to premature joint failure. Additionally, the history of inner edge tyre wear and recent rear tyre advisories strongly indicates a need for a full four-wheel alignment. Inspect the current tyres for uneven tread patterns, which can lead to unstable handling and accelerated wear. The braking system has been a persistent point of failure and advisory, with recurring notes on thin pads and pitted or scored discs. Ensure there is no shuddering through the brake pedal under heavy deceleration and check for any signs of binding calipers. Furthermore, the 2023 advisory regarding a corroded rear brake pipe suggests a need for a thorough underbody inspection to ensure structural integrity and to confirm that corrosion has not spread to other critical fuel or brake lines. Given the vehicle's age, a full audit of the service history is essential to confirm that calendar-based maintenance has been adhered to regardless of mileage.