Lexus recently revealed the new RX 450h at the 2012 Geneva Motor Show.
After the Lexus RX 400h became as popular as Ford Escape Hybrid and the Toyota Highlander Hybrid, the RX 450h, Lexus’ second best-selling hybrid model, edged out of the top spot by the CT 200h compact sedan.
The RX 450h offers more power and improved fuel economy, with its 3.5-liter V-6 Atkinson-cycle engine, rated at 245 horsepower and 234 pound-feet of torque. The front-drive model’s hybrid powertrain employs two motor-generators. The first one is an engine-driven generator which operates as an engine starter, and also charges and power the electric engines and the battery. The second is a 167 horsepower motor that works with the gas engine to deliver power to the front wheels. One of the most important changes on the new Lexus RX 450h will definitely be the hybrid propulsion system, which generates 295 horsepower.
Like all Lexus hybrids, the RX 450h can operate in electric-only or gas-engine-only modes as well as a combination of both. With the batteries sufficiently charged, the hybrid system can shuts off the engine when the car is stopped, and then turns it on again when the brake pedal is released.