2012 Mercedes-Benz S-Class 5.5L Petrol · LA12 UNV

The 2012 Mercedes-Benz S-Class presents a stable and improving maintenance trend, with the most recent MOT conducted on 2026-02-11 at 91,760 miles resulting in a clean pass. The preceding tests on 2025-02-05, 2024-02-06, 2023-02-07, and 2022-02-09 all passed without any advisories recorded. This five-year run of defect-free inspections indicates the vehicle has been maintained to a consistently high standard in recent years, with no recurring mechanical or structural failures emerging over the period. The mileage accumulation is remarkably steady and typical for a luxury saloon of this age. Between the February 2022 test at 84,866 miles and the February 2026 test at 91,760 miles, the vehicle covered approximately 6,894 miles over four years, averaging around 1,724 miles per year during that window. The earlier intervals show slightly higher annual use, with roughly 1,455 miles added between February 2022 and February 2023, and 1,455 miles between 2023 and 2024. There are no suspicious gaps or sudden jumps in the odometer readings that would suggest the vehicle was laid up for extended periods or subjected to unusually high wear. The overall annualised figure of approximately 6,554 miles since new sits comfortably within expected norms for a 2012 S-Class. Despite the clean MOT record, the repeated mention of front engine covers and under trays being fitted at multiple tests is worth noting. These items are not standard fitment references and may indicate previous repairs, replacements, or aftermarket additions to the engine bay shielding. A prospective buyer should inspect the engine bay for signs of non-standard modifications, poorly secured covers, or evidence of fluid leaks that may have prompted their installation. Given the S-Class platform's known susceptibility to air suspension faults, corroded brake lines, and subframe mounting deterioration, a thorough underbody inspection is advisable even in the absence of flagged defects. The clean record is encouraging, but a pre-purchase inspection by a specialist familiar with the W221 chassis remains the most reliable way to verify long-term structural integrity.