( http://www.TFLcar.com ) The 2013 Audi S7 is powered by a 420-hp brand new twin-turbocharged 4.0-liter V-8 that will rocket the car to 60 MPH. What makes the engine special is a pair of twin-scroll turbochargers and an indirect intercooler all located in the V between the cylinder heads. In this first drive video review Nathan has chance to drive and test this new Audi hatchback in LA California to see if the new S7 bite is as ferocious as it's bark. Check it out as Nathan put the new Audi S7 to the TFLcar test.