The 2026 model marks a major generational shift as Audi rebrands its lineup, with the S5 now serving as the sportier successor to the former S4 sedan; it features a completely redesigned exterior with an integrated rear liftback, a new 48-volt mild-hybrid (MHEV plus) powertrain for improved efficiency, and a revolutionary "Digital Stage" interior with a panoramic curved OLED display. For buyers considering the Audi S5, that matters because it affects how easy the car is to live with, whether for commuting, family use, long-distance driving or ownership costs. The useful way to read this is not as an isolated specification, but as a clue to how the car will feel in real daily use.