The 2015 Lexus NX 300h is available as a 4-door, 5-seat sport utility. Starting at $39,720, the 2015 Lexus NX 300h FWD is powered by a 2.5L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 35-mpg in the city and 31-mpg on the highway. The top of the line 2015LexusNX 300hAWD , priced at $ 41,310 , is powered by a 2.5L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 33-mpg in the city and 30-mpg on the highway.