
The 2013 Detroit Auto Show played host to the unveiling of Audi’s latest RS-badged weapon of mass seduction. The RS 7 Sportback is the new top-spec version of the A7 line, kicking the S7 Sportback into a distant second place. The heart of the car is a 4.0 litre, twin-turbocharged V8 engine which has been tuned to provide 560-horsepower and 553 lb-ft (700Nm) of torque. With this, the RS 7 Sportback manages to shave a full second off the 0-62 mph (100km/h) time when compared to its S-badged brother, managing the sprint in just 3.9 seconds. The top speed is equally impressive, with the Dynamic Plus Package fitted, Audi will rip out the electronic bureaucrat which normally reigns in the car at 155 mph, and allow it to run all the way to 189 mph.
But its not just the mighty V8 up front that makes the RS 7 Sportback so quick off the mark. Part of the credit should go to the 8-speed tiptronic transmission with reduced shift times and three-mode settings; ‘Sport’, ‘Manual’ and ‘Drive’. And of course it wouldn’t be fair to ignore the quattro permanent all-wheel drive system with torque vectoring and a sports differential.
Amazingly, despite its searing performance, the Audi RS 7 Sportback is able to return 28.8 mpg according to the combined cycle test. It manages this through a combination of an engine stop-start system, and a cylinder deactivation system which shuts down cylinders 2,3,5 and 8 when the car is cruising at a steady speed. The switch between four and eight-cylinder operation takes just a few hundredths of a second, and the only real indication to the driver that it is taking place is a visual signal within the instrument cluster.
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