Audi, today at Ingolstadt announced the introduction of its new sporty a4 line – named S4. The car will be produced in both sedan and avant, and will be powered by a three-liter V6 with direct fuel injection and mechanical turbocharging engine, who will produce 245 kw ( 333 hp ). The new S4 will reach 100km in just 5.1 seconds and this with an fuel consumption of only 9.7 liters per 100km.
The car comes standard with the quattro permanent all-wheel drive system and six-speed gear box.
The heart of the new S4 and S4 Avant is a completely redesigned engine. The “T” in the 3.0’s TFSI nomenclature no longer merely stands for “turbo”, but rather for the concept of supercharging in general – ” extensive testing on the big V6 has proven the superiority of mechanical charging. In conjunction with direct injection it is far superior to twin turbochargers, both in terms of packaging and of starting performance and responsiveness. ”
The 3.0 TFSI delivers its maximum 440 Nm (324.53 lb-ft) at 2,500 rpm and maintains this constantly until 4,850 rpm. In fourth gear, the vehicle accelerates from 80 to 120 km/h (49.71 to 74.56 mph) in just 4.4 seconds.
On average, the sedan uses 9.7 liters of fuel per 100 km (24.25 US mpg), and the Avant 9.9 liters per 100 km (23.76 US mpg) – an improvement of 3.4 liters (26 percent) compared with its predecessor.
As an option, Audi offers dual-clutch transmission – the seven-speed S tronic. The driver has the option of driving in fully automatic mode or selecting the gears with paddles on the steering wheel or directly with the shift lever – all of which provide impressively quick gearshifts.
The seven-speed S tronic consists of two separate transmissions and uses two multidisk clutches that control the various gears. The large K1 clutch guides the power via a solid shaft to the pinions for gears 1, 3, 5 and 7. A hollow shaft rotates around the solid shaft; it is connected to the compact K2 clutch, which is integrated within its larger counterpart and controls the pinions for gears 2, 4, 6 and reverse gear.
The new Audi S4 will be unveiled to the public for the first time at the Paris Auto Show from October 2 to 19.
Audi will begin delivery of its new S models in March 2009.