2018 Mercedes-Benz S-Class 2.9L Diesel · KT68 BHJ

The vehicle is currently roadworthy, though the maintenance trend shows a shift toward component wear following heavy usage. The most recent test on 15 May 2026 at 148,163 miles identified both front and rear brake discs as pitted or scored. While these did not result in a failure, they indicate that the braking system is reaching the end of its service life, moving away the clean records seen in previous years. The mileage profile reveals a significant surge in usage during the vehicle's later life. Between March 2022 and February 2023, the car covered only 48,933 miles. However, between February 2023 and May 2026, it accumulated an additional 64,186 miles in just over three years. This represents an average annual rate of approximately 21,400 miles per year, which is well above the national average for a luxury S-Class and places substantial stress on the complex air suspension components, drivetrain bushings, and cooling systems. A buyer must conduct a thorough physical inspection of the suspension and braking assembly, as the high mileage accelerates the degradation of rubber components and dampers. The 2023 advisories regarding uneven tyre wear and low tread depth suggest a period where reactive rather than proactive maintenance likely occurred. Given the recent report of scored discs, a technician should verify the remaining pad thickness and check that the calipers are not seized, as the high-mileage environment often leads to uneven heat cycling on the braking hardware.