Audi S4

The 2011 Audi A4 is the benchmark of the mid-sized sedan segment as well as the largest selling vehicle in the Audi lineup. With an array of fuel efficient and powerful engines – including the 333 hp 3.0 TFSI® V6 in the S4 – the A4 has the flexibility and power that environmentally concerned buyers also demand. With a full complement of suspension and engine technology derived directly from Audi’s expertise in racing, the 2011 Audi A4 presents an image that exudes performance, efficiency and luxury.

In the A4, each powerplant benefits from direct-injection technology to increase efficiency and response. The 2.0 TFSI turbocharged inline four and the 3.0 TFSI supercharged V6 both take advantage of forced induction to increase horsepower and torque without the penalty of added fuel consumption.

The 2.0 TFSI delivers an impressive 211 hp and 258 lb-ft of torque, thanks to Audi’s innovative direct-injection fuel system. Gasoline is injected into the engine’s combustion chambers at the high pressure of 2,175 psi, which ensures a fine spray pattern for a more efficient burn. The seamless power delivery of the water-cooled turbocharger allows the 2.0 TFSI to develop peak torque from just 1,500 rpm. The result is a driving experience that rewards buyers with an instant rush of power at nearly any engine speed.

The 2011 Audi S4 is powered by an all-aluminum 3.0 TFSI supercharged V6 engine with 333 hp and 325 lb-ft of torque. Despite these remarkable figures, the S4 is able to achieve 28 mpg on the highway, a remarkable 27 percent improvement over the previous generation S4. With an immediately responsive drive-by-wire throttle system, the 3.0 TFSI offers an instant connection from driver input to a resulting surge of acceleration.

Source: Audi press

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