Audi's redesigned top-level sedan features a smooth, powerful turbocharged V6 engine that returned 21 mpg overall in our tests, which is impressive for a large AWD sedan. Audi's new infotainment system looks complex at first, but over time we found it both logical and intuitive to use. We like how the touch screen vibrates to confirm each selection for any audio or climate task. The A8's ride is supremely comfortable, and handling is responsive. The cabin is quiet and impeccably furnished. The front seats are comfortable, supportive, and have a multitude of available adjustments, while the rear seat has limo-like room. Forward collision warning and automatic emergency braking are standard. For 2020 lane departure warning and lane keeping assistance are standard on all trim lines. A plug-in hybrid version that can go 17 miles on electric power was available for 2020 and 2022. The S8 is a high-performance version .