When the 2025 Audi S5 was revealed this week ... Instead of a Torsen diff, the Quattro Ultra system is 100% front-wheel drive until the system detects slip, upon which it uses an electronically ...

Audi quietly dropped a bombshell in its reveal of the new S5 sedan. In addition to replacing ... the Quattro Ultra system is 100% front-wheel drive until the system detects slip, upon which ...