2010 Lexus HS 250h

Hybrid sedan fills out the entry luxury line-up

By Nina Russin

2010 Lexus HS 250h

The HS 250h is Lexus’ first dedicated gasoline-electric hybrid. The sedan, that rolls into dealerships this August, is the third pillar in an entry luxury strategy that also includes the comfort-focused ES, and high-performance IS models.

Power comes from a 2.4-liter four-cylinder Atkinson cycle engine and two electric motors, mated to a continuously variable automatic transaxle. A compact inverter converts direct current from the car’s nickel-metal hydride battery into alternating current for the motors. The battery is located between the car’s rear seat and trunk.

An electric power steering pump, similar to the design on other Toyota and Lexus hybrids is lighter and more fuel efficient than a hydraulic mechanism. The electric pump eliminates parts that would traditionally wear out and require replacement during the car’s life cycle.

A fully-independent suspension includes a front stabilizer bar to keep the chassis flat while cornering. Buyers who purchase the base model can upgrade from standard 17 to 18-inch wheels by adding a touring package. The option group also includes heated front seats and a sport suspension. Read the rest of this entry »