Land Rover has released full details of its revised 2005 Range Rover, claiming it is the most refined, luxurious and powerful Range Rover ever.

In fact, it's calling the model the 2006 Range Rover, even though it goes on sale in spring 2005. Two new petrol engines including a supercharged 4.2 litre are added to some fresh exterior design details, a quieter interior and a profusion of new technology.

The latest Range Rover joins the recently-announced, slightly-smaller Range Rover Sport, which has extended the Land Rover line up to five models for the first time.

Both new engines are petrol units from sister company Jaguar, which offer more performance and are predicted to have better fuel economy than the single outgoing V8 petrol.

Heading the line-up is a supercharged 400bhp 4.2 litre engine. It offers 35 per cent more power than the outgoing V8.

The new naturally-aspirated 305bhp 4.4 litre V8 is also quicker and more powerful than the outgoing V8. The 0-62mph acceleration time is projected to be around half-a-second faster and maximum power is increased by 20bhp.

The new engines are matched to the latest-generation ZF six-speed automatic electronically controlled transmission. Steering feel is enhanced and the air suspension with adjustable ride-height is improved.

In addition, the supercharged version gets performance Brembo front brakes and revised suspension for better high-speed on-road performance.

The Range Rover retains its familiar shape, but there are a few minor changes. All new models get a new front bumper design, new headlamps and tail lights, a new front grille and revised power vents.

New 18-inch and 19-inch alloy wheels are also available. The supercharged derivative gets additional styling modifications, which include mesh design front grille and power vents, and 20-inch alloy wheels.

Additional interior features available include a rear camera for easier reverse parking, a tyre pressure monitoring system and adaptive front headlamps that swivel when cornering.

A rear seat entertainment system comes with two headrest mounted 6.5-inch screens, a six-disc DVD auto changer, infra-red remote control, wireless headphones and sockets for auxiliary media sources such as an MP3 player or games console.