2014 Mercedes-Benz S-Class 3.0L Diesel · LJ14 XLT

The most recent MOT test on 2 December 2025 resulted in a Pass, although three advisory items were recorded: both rear tyres were noted as worn close to the legal limit with edge wear, and the rear brake pads were reported as wearing thin. Looking at the broader pattern, the vehicle has enjoyed a generally strong MOT history with clean passes in 2024, 2023, 2022, and earlier years, but the latest advisory cluster suggests that consumable wear items are now reaching the point of requiring attention. The single failure in November 2022 was classified as Dangerous due to a nearside rear tyre bulge caused by structural separation, an issue that was clearly rectified and did not recur. Overall, the maintenance trend appears stable rather than worsening, but the rear-end wear pattern flagged in consecutive tests does indicate a developing concern that a buyer should treat as a near-term service requirement. With approximately 96,193 miles recorded over twelve years, the vehicle is averaging around 8,016 miles annually, which is broadly typical for a luxury saloon of this age and consistent with regular but not excessive use. There are no significant mileage gaps suggesting prolonged standing, nor any rapid accumulation that would flag excessive motorway or long-distance wear, both of which is reassuring for a Mercedes-Benz S-Class where mechanical condition tends to reflect usage quality as much as quantity. The continuous annual MOT history without large mileage jumps suggests the car has been in steady service, which generally supports reasonable condition of the drivetrain and major mechanical components, although the twelve-year calendar age means that age-related degradation of polymers, seals, and electronics remains a separate consideration regardless of the odometer reading. For a prospective buyer, the recurring advisory pattern around rear tyres and rear brake pads warrants specific attention. Both rear tyres showing edge wear simultaneously is suggestive of either rear wheel alignment issues, often linked to worn suspension bushes or trailing arms on the S-Class multi-link rear axle, or simply age-related wear on a vehicle that has covered considerable mileage. On a test drive, listen for any clonking or knocking from the rear suspension over speed humps or uneven surfaces, and feel for vagueness or wandering at speed that could indicate worn rear bushes. Inspect both rear tyres closely for even tread across the full width; if edge wear is pronounced, request a geometry check and budget for replacement tyres plus a possible rear suspension inspection. With brake pads now noted as thin at the latest test, the discs should also be examined for wear ridges and corrosion, as worn pads accelerating towards replacement typically indicate that discs may need skimming or renewal as well. On test drive, check for any pulling under braking, brake shudder through the steering wheel, or a soft brake pedal that might suggest caliper issues or hydraulic degradation. Beyond the recorded defects, this twelve-year-old S-Class warrants several age-related checks that MOT testing does not fully cover. Inspect the tyre sidewalls for cracking and perishing caused by UV exposure, which is common on older vehicles regardless of tread depth. Examine the exhaust system, particularly mounting rubbers and joints, for corrosion given the age. Check that the 12V battery is recent, as Mercedes-Benz vehicles of this era are sensitive to voltage drops that can trigger electronic control unit faults, and verify that the auxiliary battery for systems such as the air suspension or starter generator, depending on specification, is also in good condition. Confirm the service book stamps to ensure recent fluid changes including engine oil, transmission fluid, brake fluid, coolant, and differential oil where applicable, as Mercedes specification fluids degrade with calendar age even on low-mileage cars. Finally, inspect the bodywork closely for corrosion around wheel arches, door sills, and the boot lid, and run a diagnostic scan for any stored fault codes in the air suspension, ABC system, or electronic stability systems, as these are known weak points on the S-Class of this generation and may not always trigger an MOT failure but can represent significant forthcoming expenditure.