2014 Mercedes-Benz S-Class 5.5L Petrol · AL55 KAJ

The vehicle presents as currently roadworthy following a clean MOT examination on 8 June 2026 at 125,392 miles, recorded just seven days prior to today. The maintenance trajectory remains stable, having delivered consecutive clear certificates across 2023, 2025, and 2026. A single failure during the April 2024 test at 112,580 miles involved offside rear brake pads reaching minimum thickness and elevated carbon monoxide readings at both idle and fast idle. The tester identified these faults directly, yet the garage rectified them promptly, allowing the subsequent inspection to return without any advisories or mandatory replacements. This pattern indicates responsive upkeep rather than deferred maintenance. Annual mileage accumulation tracks consistently with expected usage for a twelve-year-old executive saloon. The odometer advanced by 8,232 miles between April 2023 and April 2024, followed by 8,074 miles through April 2025. Recent figures show a slower pace, recording an additional 4,738 miles over fourteen months leading into June 2026. These intervals suggest measured driving habits rather than aggressive commuting or prolonged storage periods. The testing schedule follows standard annual intervals with no unexplained gaps, providing a reliable chronological baseline for component degradation assessment. Prospective buyers should verify the current condition of the rear braking assembly, specifically the offside rear pads and associated discs, given the previous thinning fault. The historical exhaust emissions exceedance warrants a thorough visual inspection of the downpipe, catalytic converter, and oxygen sensors for subtle leaks or carbon fouling that could trigger another failure. Although the record shows no structural corrosion or suspension complaints, the chassis requires hands-on verification of front wishbone bushes, rear trailing arms, and coil spring mounts due to accumulated distance. Confirming fluid levels and checking for oil seepage around the valve covers will round out a practical pre-purchase assessment.