First-year B8 S4, six-speed manual, and documented work through the supercharged V6’s PCV, thermostat, intercoolers, intake carbon, and differential make this a well-documented example of the platform’s major maintenance points. At 128,000 miles, it sits near the high end for the generation. The disclosed issues are cosmetic wear, curb rash, worn interior surfaces, an intermittent dipped-headlight alert, and corrosion on some underbody components.