2005 Lexus RX 400h Hybrid Preview

Instead of a traditional tachometer on the instrument panel, the RX 400h has an illuminated power meter that displays the level of power generated by the gas-electric

The 3.3-liter V6 engine found in the RX 330 is mated with Toyota's sophisticated second generation hybrid powertrain in the RX 400h. (Photo: Lexus)

hybrid powertrain. And, the driver will also be able to monitor the gas-electric power distribution on the available seven-inch touch panel display screen that comes as part of the navigation system.

Under the hood, the hybrid powertrain is combined with the 3.3-liter V6 engine found in the RX 330 to significantly improve low to mid-speed acceleration and overall fuel efficiency.

The RX 400h will also incorporate VDM, or Vehicle Dynamic Management,

The batteries of the hybrid SUV are recharged as you go about your daily driving. (Photo: Lexus)

which is a system that uses a variety of sensors to anticipate the onset of a vehicle skid or slide and then helps the driver to correct the situation with a combination of braking and throttle control.

The Lexus hybrid uses a regenerative braking system, just like the Prius, to further boost system efficiency. When the vehicle is coasting or the brakes are applied, the electric motor functions as a generator, capturing kinetic energy that would normally be lost as heat through the brakes and converting it into useable electricity to recharge the batteries.

Building the 400h will raise awareness of hybrid vehicles among luxury buyers, Clements noted.