It sits on Audi's B9 platform shared with the Audi A4 sedan. Essentially, it's Audi's equivalent to the BMW 4 Series or the Mercedes-Benz C-Class coupe. In the case of the RS5, compare it to the BMW M4 and the Mercedes-AMG C63. Like its rivals, the RS5 sits longer, lower, and wider than its sedan stablemate. The RS features aggressive front and rear fascias and a set of unique wheels. While the styling of the new model may look evolutionary, it is indeed all-new inside and out.
The two cars in these photos are wrapped in camouflage that covers everything below the beltline. The general shape of the bodywork looks the same, but the front and rear are slightly restyled. The front now has larger air intakes in the corners and a lower chin spoiler. Out back, the dual single-exit exhaust pipes give the RS model away. The S5, like all S models, features quad exhaust tips. The rear bumper is slightly modified, but all in all it's not far off from the A5 and S5 models. Audi's styling is always conservative, so this should come as no surprise.
There's no word as to what's resting under the hood, but look for forced induction and six cylinders, possibly pulling something from the Porsche Panamera. As with every other Audi performance car, power will be sent to all four wheels through the latest generation of the Quattro all-wheel drive system. Look for a full reveal in the next few months, possibly as soon as March at the Geneva Motor Show.