The Audi S4 Avant provides 505 to 1,510 liters (17.8 ... Hi-fi fans can order the Bang & Olufsen Sound System with state-of-the art 3D sound. Efficient help: the driver assistance systems Both ...

but it's worth springing for the higher trims purely for the upgrade to the Bang & Olufsen sound system. In the S4, it's a ...

Aside from the diesel engine, the S4 is the latest Audi to gain a 48V electrical system ... It must be said though, there’s character to the sound, and it’s hard to fault how effective ...