But as well as showing off the stunning shape, the Roadjet reveals a first for the A4 range - a hatchback-style body, similar to that of the five-door Sportback version of the smaller A3. Set to be offered alongside traditional four-door saloon and load-lugging Avant variants, the newcomer should provide a practical compromise for those buyers who don't want a full estate.
Reflecting a general increase in size across the executive car market, the Roadjet measures 110mm longer, 80mm wider and 120mm taller than the current- generation A4, and with an increased wheelbase, it is much more spacious.
Inside is a four-seater layout with two sliding rear chairs mounted on diag-onal runners. When these are set at their outermost position, there's enough room for a child seat to be fixed behind them. This is mounted on a movable, twin-height electric boot floor, which can extend beyond the bumper to aid loading, and is remote-controlled.
Up front, the cabin is more softly styled than the current A4's, with a curvy centre console and dashboard. It all looks very classy, with blue-backed dials and high-quality leather upholstery. The Roadjet also features a host of electronic gadgets including Drive Select, which changes the sharpness of the throttle, steering and suspension settings according to owners' tastes.
Powering the Roadjet is a 300bhp version of Audi's 3.2-litre FSI V6, with variable valve timing. This is mated to a new seven-speed DSG dual-clutch transmission, propelling all four wheels via the quattro drivetrain, with a 40:60 front/rear power split. Giving a hint at how close the model is to production, bosses quote a 0-62mph time of 6.4 seconds and a 155mph top speed.
While no date has been announced for the new A4's official unveiling, a debut is expected next year, with British sales starting in 2008.
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