Orders are now being taken for Audi's 2008 model-year A8 luxury saloon, which goes on sale in the UK in late autumn.

The new generation A8 range is priced from £49,995 to £80,995, and it boasts the cleanest emissions of any luxury saloon sold here - the 2.8-litre FSI petrol model has lowest-in-class CO2 output of 199g/km. Optional extras include the Audi side-assist and lane-assist systems first seen in the Q7 luxury SUV. Using intelligent radar technology, Audi side-assist warns the driver of potential hazards when undertaking lane-changing manoeuvres.

Audi lane-assist warns the driver to prevent an unintentional departure from the lane in which the A8 is travelling. A small camera positioned above the interior mirror on the windscreen observes the road ahead of the car and a high-speed computer detects the lane marking lines.

If the driver moves towards one of these lines without indicating, Audi lane assist makes the driver aware of this by a vibration in the steering wheel.