AudiAudiGermany, 1909 > present83 models
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is the latest German automaker to enter into the super four-door coupe game. Among the CLS63 AMGMercedes-Benz CLS 63 AMGGermany, 2011 > present6 photos
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, M6 Gran CoupeBMW M6 Gran CoupéGermany, 2013 > present7 photos
and Porsche Panamera Turbo SPorsche Panamera Turbo S PDKGermany, 2011 > present12 photos
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, the RS7 Sportback is the latest contender. Power comes from the twin-turbocharged 4.0 TFSI V8 with 560hp and 516.29lb-ft of torque (700Nm). The car is Audi’s big reveal at the North American International Auto Show along with the SQ5Audi SQ5 3.0 TFSIGermany, 2013 > present3 photos
and facelifted R8Audi R8 Coupé 4.2 FSI qu...Germany, 2012 > present1 photo
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The RS7 Sportback can get to 100km/h in 3.9 seconds and hit an unlimited top speed of 189mph (305km/h). The limited top speed is 173mph (280km/h). Its average fuel economy is 24mpg US (9.8l/100km). 

The only transmission available is an eight-speed Tiptronic with steering wheel-mounted paddle shifters and all-wheel drive. During normal driving, power is distributed 60% to the rear and 40% to the front, but that can be shifted as traction is needed. 

The engine uses cylinder deactivation to run as a turbocharged 2.0-liter four cylinder when all of the power in not necessary. Audi estimates the system lowers fuel economy by 5% in general and 10% when cruising at normal speeds. 

In terms of looks, it is hard to differentiate the RS7 from a standard A7Audi A7Germany, 2010 > present39 versions
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. Audi added some carbon fiber trim around the car and bigger wheels and tires, but to the untrained eye, the car looks the same as the standard version. It rides on 20in wheels with 21in wheels as an option. Brakes are upgraded to wave-shaped 15.35in (390mm) units, and 16.54in (420mm) carbon brakes are an option. It comes with a standard air suspension that is 0.79in (20mm) lower than the standard A7. 

The RS7 will be on sale later in the year, but Audi is not talking about pricing yet.