2009 Audi S4 Seven-Speed S-tronic
The 2009 Audi S4 is powered with the aid of a three.0 litre V6 with direct gasoline injection and what Audi call "mechanical turbocharging" (supercharging), gives you 245 kW (333 hp) but consumes simplest 9.7 liters of gasoline according to 100 km (24.25 US mpg). Quattro permanent 4-wheel pressure, sports activities suspension and a high-performance brake system manage the strength reliably. With non-compulsory overall performance technology - the seven-velocity S tronic, the new sport differential and the Audi force select dynamic using gadget - each new S fashions from Audi are extending their lead even in addition.
It takes simply two figures to realize the dynamic capacity of the new Audi S4 and S4 Avant: five.1 seconds for the sprint from 0 to 100 km/h (sixty two.14 mph) and only 4.Four seconds for the intermediate dash from eighty to 120 km/h (49.71 - seventy four.56 mph) in fourth gear. Behind these figures there is a captivating using enjoy, marked by means of the sonorous sound of the brand new automatically supercharged V6 engine, its mighty propulsive electricity, its unfastened-revving man or woman and its sharp, spontaneous response to the throttle. 
2009 Audi S4 Seven-Speed S-tronic
The 3.Zero TFSI is the new range-topping unit in Audi's V6 engine circle of relatives. It Develope 333 horsepower and 324 lb-feet (440 Nm) of torque at 2,500 rpm, the engine is attached to both a standard six-velocity guide gearbox, or an non-compulsory seven-pace, dual-clutch transmission which may be used both as a conventional automatic or as a sequential semi-auto with steering wheel established paddles.
Now the supercharger is staging a comeback - the T within the engine description not stands for the turbocharger alone. Extensive comparative checks revealed the mechanical supercharger to be advanced to a biturbo concept for the huge V6 engine. In conjunction with direct injection this concept has clear advantages in terms of the prioritized functions of packaging, beginning performance and responsiveness.
The supercharger is so compact that is easily accommodated within the 90-diploma V of the cylinder banks, in location of the consumption manifold. The engine-driven Poly-V belt that powers the mechanical turbocharger gives complete thrust proper from idling pace. The 3.0 TFSI promises its most 440 Nm (324.53 lb-toes) at most effective 2,900 rpm and keeps this constantly till 5,three hundred rpm. The intermediate dash from eighty to 120 km/h (forty nine.71 to seventy four.Fifty six mph) is completed in fourth equipment in four.4 seconds; even in sixth tools it takes an insignificant 7.1 seconds. 
2009 Audi S4 Seven-Speed S-tronic
The seven-velocity S-tronic gearbox of the 2009 S4 consists of separate transmissions and makes use of multidisk clutches that manipulate the numerous gears. The big K1 take hold of courses the energy thru a stable shaft to the pinions for gears 1, 3, five and 7. A hollow shaft rotates around the solid shaft; it's miles linked to the compact K2 clutch, that is included inside its larger counterpart and controls the pinions for gears 2, 4, 6 and reverse equipment.
Both transmission structures are continuously lively, but simplest one is powered at a time by means of the engine. The quattro all-wheel-drive gadget sends energy to all four wheels. A 40/60 percent front/rear torque bias ensures that the coping with remains sporty but strong. However, whilst essential, the strength distribution can be various inside fractions of a 2nd.
The fuel paths after the supercharger are very short which is why the three.Zero TFSI builds up torque extremely speedy when accelerating, even extra dynamically than a clearly aspirated engine of the equal displacement. The 3.Zero TFSI responds immediately to the throttle in real sporty style, is agile and sprightly, revving as much as the maximum of 7,000 rpm with playful ease. 
2009 Audi S4 Seven-Speed S-tronic
The 2009 Audi S4 shares the identical styling cues as the rest of the version lineup. Some of the most placing modifications to the exterior layout are the special aprons, the aluminum-look outside mirrors, the 18-inch S-layout mild-alloy wheels, the side rocker panels, the discreet rear spoiler and the quadruple exhaust system. The xenon plus headlights with daytime walking lights and the rear lighting are similarly distinctive touches.
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