Depending on load requirements and driving conditions, Lexus hybrid technology switches automatically from petrol to electric, or a combination of the two power sources. This function cannot be switched on demand.

The Lexus hybrid's electric motor provides maximum torque off the line, while the petrol engine offers plenty of power at medium and high speeds. In combination, the two will provide surprisingly responsive performance.

Though some critics claim hybrids will go away soon, Lexus will continue to invest in hybrid technology because we believe it is the next great advancement in automobiles. Many leading automotive experts predict that hybrid technology will spread across all segments and into virtually all types of passenger vehicles. Manufacturers make (and stop making) vehicles based on customer demand. Once customers experience the power, fuel economy, reduced emissions, versatility, convenience and (in the case of Lexus) the luxury of a hybrid, there will be no turning back.

No. Though Lexus hybrid technology allows the vehicle to operate on electric power at slow speeds when petrol is in the tank, it is not designed to run without petrol. Doing so could cause severe damage to the hybrid system, so drivers should be sure to keep petrol in the tank at all times, just like a conventional vehicle.

They will be built in Japan initially. No decisions have been made regarding additional production locations.

The hybrid battery is covered by a warranty for 8 years/160,000km, whichever comes first. In normal use, we expect the battery to last longer than the length of this warranty.

The system used in Lexus hybrid technology will be as reliable as Lexus engines in our petrol-powered vehicles.

No, Lexus hybrid vehicles never need to be plugged in. Lexus hybrid technology automatically recharges its battery using regenerative braking or by running the engine to generate electricity.

The ADR 81/01 standard has measured fuel consumption at 8.1L /100km. Because fuel economy estimates are derived in ideal laboratory conditions, they are just estimates which may not reflect real world conditions. There are many factors which may cause your actual mileage with the RX400h, or other Lexus hybrid vehicles, to vary from estimates.

With the Lexus Hybrid Drive AWD system, there is no driveshaft connecting the front and rear axles. Power at the front axle is supplied by the hybrid system, and power to the rear axle is generated by a separate 50 kW electric motor.

The term 'hybrid' means there are two different sources of power. Current hybrid vehicles have both an internal combustion powered engine (like a conventional automobile) and an electric motor.

With the hybrid system, the transmission functions as an Electronic Continuously Variable Transmission and the electric motor assists the internal combustion engine. So this type of a hybrid vehicle achieves smooth acceleration and deceleration, as well as excellent response.