2010 Audi S4 to Get Supercharged V-6
AUBURNHILLS, MI – The 2010 Audi S4’s powertrain will feature an all-newforced-induction 3.0L V-6 that will generate something close to the 340horsepower found in the outgoing S4’s 4.2L V-8. Audi’s strategy is to delivercomparable or improved overall performance by toeing the line on weight andmaintaining power output by using forced induction on a smaller displacementengine. Doing so will boost a manual transmission S4’s fuel economy on theEuropean cycle to 23.3 mpg compared with only 19.4 mpg for the V-8 S5. That’san efficiency gain of 20 percent, according to www.caranddriver.com.
A lesspowerful, 290-hp, 310 lb-ft version of the engine will be the base offering inthe A6 Quattro, replacing the 3.2L V-6. Known as TFSI, which in the past hasbeen Audi’s internal moniker for four-cylinder turbos, the new engine may bereferred to as the 3.0T in the model name, possibly indicating a twin-chargedsystem using both a supercharger and a turbocharger, the report said. WhileVolkswagen has a “twincharger,” Audi has not yet offered such a system.
Comparedwith the outgoing 2008 A4, the redesigned 2009 A4’s body is approximately 10percent lighter. The A4 and S4 will use identical sheetmetal this time around.Not only does the sharing save money, but stresses the exclusivity of the RS 4which will better stand out with its distinct sheetmetal—including bulgingfenders—and a V-8.
Car and Driver expects to see Audi rollout its Magna-sourced “sport differential” in the S5 and Q5 to combatundersteer in its four-wheel-drive vehicles. This trick differential adds about40 pounds.
The S4will be the first Audi vehicle in the U.S. with a longitudinal enginelayout to offer a dual-clutch transmission. Now known as S tronic, thisseven-speed sequential-manual will further improve performance and efficiency.The supercharger will make the V-6 weigh about the same as the V-8 overall.
Audi willdebut the 2010 S4 this fall after the 2008 Paris show in October.