2010 Audi S4 to Get Supercharged V6

Audi maintains performance while increasing efficiency by 20%. Those who assumed the 2010 Audi S4 would share its powertrain with the S5 were incorrect. Instead, look for an all-new forced-induction 3.0-liter V-6 that will generate something close to the 340 horsepower found in the outgoing S4’s 4.2-liter V-8. Why is the Audi S4 moving from a V-8 to a V-6, just as the BMW M3 moved from an