The bump in power will be complemented by a decrease in weight.

Audi is considering expanding the RS 6 Avant lineup with a range-topping variant called Plus, a new report indicates. If given the green light for production, the super wagon will be more powerful and lighter than the RS 6 Avant.

Stephan Reil, the head of Audi's Quattro division, told England's CAR Magazine that the RS 6 Avant's 4.0-liter V8 engine's output needs to be increased by roughly nine percent for a Plus model to make a big splash when it is launched. Given that the current model is rated at 552 horsepower, the figure given by Reil hints that the rumored Plus could pack over 600 ponies.

The extra power will be complemented by a decrease in weight thanks to extensive use of carbon fiber and aluminum components. It will also feature a model-specific suspension setup that will give it an even sportier ride.

"A Plus model should always handle differently than the standard car," explained Reil.

Unlike the first-gen RS 6 Avant Plus that bowed in 2004 as a limited-edition, the upcoming version will be added to the Audi lineup as a regular-production model.

If the rumor proves true, more details about the RS 6 Avant Plus will be available in the weeks leading up to the Geneva Motor Show.