2015 Mercedes-Benz S-Class 4.7L Petrol · 500 WXL

The 2015 Mercedes-Benz S-Class presents a largely clean roadworthiness record with four consecutive pass results spanning from 2022 through 2026, most recently confirmed as passed on 7 August 2026 with no defects noted. However, this stability masks a pattern of recurring tyre and braking concerns that surfaced during the 2023 MOT, when both nearside and offside rear tyres showed measured tread depths approaching legal limits at 1.6mm and were reported as worn on the edges, while the front tyres exhibited similar edge wear. The 2021 MOT introduced additional deterioration with inner brake discs showing pitting and scoring despite no serious weakening, rear inner brake pads appearing thin, and front inner brake pads also worn thin, suggesting progressive brake system degradation. Despite these earlier advisories, the vehicle has since returned to consistent passing status, indicating the current condition is free of active faults. At 65,012 miles on its 11-year lifespan, the vehicle accumulates approximately 5,910 miles per year, a rate significantly below typical usage expectations for a model of this age and suggests either infrequent driving or extended periods of storage. The gap between the 2022 and 2023 MOT appointments—just one year apart—is notable given the presence of tyre advisories in 2023, implying that the vehicle may have experienced reduced operational demands during that period rather than accelerated wear. The steady progression of tyre measurements toward the legal threshold in 2023 aligns with the low annual mileage, possibly reflecting less frequent wheel rotation or underutilisation of the tyres. Without evidence of rapid mileage spikes or multiple back-to-back failed tests, the overall mechanical trajectory appears stable, though the earlier brake-related advisories warrant particular attention regardless of current cleanliness. The tyre advisories from 2023 point to potential issues with suspension bushings or sidewall integrity where the contact patches have become excessively worn on the outer edges, which could manifest as a subtle pulling sensation during lateral cornering or a noticeable vibration when travelling over bumps. A test drive should include careful monitoring of handling dynamics and steering response, particularly when navigating corners at moderate speed, as worn outer-edge tyres often exhibit uneven wear patterns and can affect grip balance. Additionally, the 2021 brake disc pitting and thin pad conditions warrant a thorough visual inspection of the front and rear brake assemblies; if the vehicle has not been serviced since that MOT, the pads may still be compromised even if they appear acceptable now, and a professional brake system check is advisable before committing to purchase. Given the clean recent MOT history and the absence of active faults, the vehicle's immediate roadworthiness is satisfactory, but the historical tyre wear and brake system concerns require due diligence. Verify the current tyre tread depths with a calibrated gauge to confirm whether they remain above the legal minimum, and request a detailed brake system review including pad thickness measurement and disc surface inspection. If the tyre wear is indeed limited to the edges as previously recorded, consider whether the replacement interval aligns with normal usage patterns; otherwise, budget for future tyre replacement sooner than the standard schedule. The overall assessment indicates a car that has performed reliably in terms of mechanical defects but carries a legacy of tyre and braking issues that should be addressed before taking delivery to ensure continued safety and performance.