2007 Audi RS4 Preview

For additional kick, the RS4 will feature a new sports mode, which when

Engineers in charge of the RS4 were ordered to optimize its power-to-weight ratio to ensure it wouldn't be a slouch in the corners. (Photo: Audi Canada)

activated remaps the gas-pedal control, giving the engine sharper response.

However impressive the new RS4 is in terms of acceleration, there's far more to it than just straight-line performance. Engineers in charge of the vehicle were ordered to optimize its power-to-weight ratio to ensure it wouldn't be a slouch in the corners. Like its suspension and chassis components, the new RS4 features a hood and front fenders crafted from aluminum to reduce weight. The result is a power to weight ratio of 3.93 kg/hp, a figure that that eclipses the M3 Coupe's 4.36 kg/hp substantially.

The race car worthy technology of the RS4 is skinned in the discreet, yet seductive package of the 'B7' A4 sedan. In order to optimize airflow to the engine and around the vehicle, the RS4 features a tailor-fitted bodykit composed of

The '07 RS4 is lower and wider than the stock A4 in order to improve handling characteristics. (Photo: Audi Canada)

an aggressive front valance, side skirts and a new rear fascia. The front valance features larger vents trimmed in a diamond mesh pattern, foglamps, and brake ducts, while in back a tiny ruler-edge spoiler mounted on the trunklid and a pair of fat oval tailpipes sets the stealthy theme.

Behind the style, there's plenty of substance. The '07 RS4 is lower and wider than the stock A4 in order to improve on its handling characteristics. Audi's engineers have dropped the ride height of the car by 30 mm while increasing the front and rear track for additional stability and unshakable grip to keep the car planted to the road, regardless of weather conditions. The RS4 also wears new 7-spoke alloy wheels, inspired by the Le Mans Quattro concept car of 2003.