Audi revealed the details of the RS 6 Avant on December 5, 2012.[25] Its twin-turbo 4.0 L (3,993 cc) TFSI V8 engine develops 412 kW (560 PS; 553 bhp) at 5700-6600 rpm and 700 N⋅m (516 lbf⋅ft) of torque at 1750-5500 rpm.[26] This will enable the RS 6 Avant to accelerate from 0 to 100 km/h (62.1 mph) in 3.9 seconds. The top speed is limited to 250 km/h (155.3 mph) by default. By adding the optional Dynamic or Dynamic Plus package, this top speed is increased to respectively 280 km/h (174.0 mph) or 305 km/h (189.5 mph). Audi claims an average fuel consumption of 9.6 L/100 km (29.4 mpg‑imp; 24.5 mpg‑US)[26] and CO2 emissions of 223 g/km.[26] In order to accomplish this, Audi has added a start-stop system and a cylinder on demand system. The RS 6 Avant is offered with an 8-speed tiptronic transmission.

Olsson’s first order of business was to squeeze more power out of the RS 6’s twin-turbocharged 4.0-liter TFSI V8 engine by making numerous modifications including adding a pair of beefy 18-karat gold anodized turbochargers and a straight-pipe race exhaust system designed by Milltek Sport. All told, the eight cylinder’s output has been bumped to...