Enter the 1999 ‘B5’ Audi RS4 ... seemed to be an Audi speciality. Drive it with gusto and the RS4 drinks fuel like a race car. I did an MPG Marathon event in one many years ago and, after ...

When the 2025 Audi S5 ... smaller cars with transverse engines, like the Audi S3. 2025 Audi S5 Audi Diagrams of the drivetrains in the 2025 Audi S5, at left, and the outgoing Audi S4.