The 2012 Lexus HS 250h is available as a 4-door, 5-seat sedan. Starting at $37,030, the 2012 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 2012LexusHS 250hPremium , priced at $ 39,800 , 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.