2019 Audi A8 to offer plug-in hybrid version; 48-volt mild hybrid on all models

2019 Audi A8Audi may have taken an evolutionary approach to the design of the newest, largest luxury sedan, but it is positioning the car as a technical force to be reckoned with. The 2019 Audi A8 ushers in a new era for the German luxury brand—starting now, every single model will soon feature a mild-hybrid system. That hardware begins with the...