The 2011 Lexus HS 250h is available as a 4-door, 5-seat sedan. Starting at $36,330, the 2011 Lexus HS 250h Base is powered by a 2.4L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 35-mpg in the city and 34-mpg on the highway. The top of the line 2011LexusHS 250hPremium , priced at $ 39,100 , is powered by a 2.4L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 35-mpg in the city and 34-mpg on the highway.