2010 Lexus HS 250h Focused on Fuel Economy

The 2010 Lexus HS 250h is focused more on fuel economy than performance, it's not surprising to see that 2010 Lexus HS 250h has the same Atkinson-cycle, 2.4-liter inline four-cylinder engine used by the Toyota Camry Hybrid. Lexus says total horsepower is 187. In the Camry, 147 hp is coming from the 2.4-liter engine, with a nickel-metal hydride battery pack contributing the remaining 40 hp. It's a fair guess that in the 2010 Lexus HS 250h it's the same. To get this power to the front wheels, there's a trans axle with the electric motors and a planetary-type continuously variable transmission built into it.

Like the 2010 Lexus RX 450h, the HS 250h incorporates an exhaust heat recovery system to hasten warm-up time for the gas engine and allow it to shut off sooner. This benefits fuel economy, though Lexus has not made any miles-per-gallon predictions for the 2010 HS 250h.

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