2009 Audi S4 Seven-Speed S-tronic
The 2009 Audi S4 is powered by way of a three.Zero litre V6 with direct fuel injection and what Audi call "mechanical turbocharging" (supercharging), gives you 245 kW (333 hp) yet consumes simplest nine.7 liters of gas in keeping with one hundred km (24.25 US mpg). Quattro permanent four-wheel pressure, sports suspension and a high-overall performance brake device manage the energy reliably. With optionally available overall performance technology - the seven-speed S tronic, the new recreation differential and the Audi drive select dynamic riding gadget - both new S fashions from Audi are extending their lead even similarly.
It takes simply figures to recognize the dynamic potential of the new Audi S4 and S4 Avant: 5.1 seconds for the dash from zero to a hundred km/h (sixty two.14 mph) and simplest 4.4 seconds for the intermediate sprint from eighty to one hundred twenty km/h (forty nine.71 - 74.Fifty six mph) in fourth tools. Behind those figures there may be a captivating using revel in, marked by way of the sonorous sound of the new routinely supercharged V6 engine, its amazing propulsive power, its loose-revving character and its sharp, spontaneous reaction to the throttle. 
2009 Audi S4 Seven-Speed S-tronic
The 3.Zero TFSI is the brand new range-topping unit in Audi's V6 engine circle of relatives. It Develope 333 horsepower and 324 lb-ft (440 Nm) of torque at 2,500 rpm, the engine is hooked up to either a wellknown six-pace guide gearbox, or an elective seven-velocity, dual-seize transmission which may be used both as a conventional automated or as a sequential semi-car with guidance wheel hooked up paddles.
Now the supercharger is staging a comeback - the T in the engine description now not stands for the turbocharger alone. Extensive comparative assessments revealed the mechanical supercharger to be advanced to a biturbo concept for the huge V6 engine. In conjunction with direct injection this idea has clean advantages in terms of the prioritized features of packaging, beginning performance and responsiveness.
The supercharger is so compact that is without problems accommodated within the ninety-diploma V of the cylinder banks, in area of the consumption manifold. The engine-driven Poly-V belt that powers the mechanical turbocharger provides full thrust proper from idling speed. The three.Zero TFSI offers its maximum 440 Nm (324.Fifty three lb-feet) at simplest 2,900 rpm and maintains this continuously until five,three hundred rpm. The intermediate sprint from 80 to a hundred and twenty km/h (49.Seventy one to seventy four.Fifty six mph) is completed in fourth tools in 4.4 seconds; even in sixth gear it takes a trifling 7.1 seconds. 
2009 Audi S4 Seven-Speed S-tronic
The seven-speed S-tronic gearbox of the 2009 S4 includes two separate transmissions and makes use of two multidisk clutches that control the various gears. The huge K1 take hold of publications the energy through a solid shaft to the pinions for gears 1, three, 5 and seven. A hole shaft rotates around the strong shaft; it's far connected to the compact K2 snatch, that is included within its larger counterpart and controls the pinions for gears 2, four, 6 and reverse gear.
Both transmission systems are constantly energetic, however most effective one is powered at a time with the aid of the engine. The quattro all-wheel-drive device sends electricity to all 4 wheels. A 40/60 percentage the front/rear torque bias ensures that the handling remains sporty but stable. However, while important, the power distribution may be numerous within fractions of a 2nd.
The fuel paths after the supercharger are very quick that is why the three.Zero TFSI builds up torque extraordinarily quickly while accelerating, even more dynamically than a obviously aspirated engine of the equal displacement. The 3.Zero TFSI responds immediately to the throttle in real sporty style, is agile and sprightly, revving up to the most of 7,000 rpm with playful ease. 
2009 Audi S4 Seven-Speed S-tronic
The 2009 Audi S4 shares the equal styling cues as the relaxation of the version lineup. Some of the most putting adjustments to the outside design are the special aprons, the aluminum-appearance outside mirrors, the 18-inch S-design light-alloy wheels, the aspect rocker panels, the discreet rear spoiler and the quadruple exhaust system. The xenon plus headlights with daylight hours running lighting fixtures and the rear lighting fixtures are similarly specific touches.
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