The 2014 Acura RLX Sport Hybrid is available as a 4-door, 5-seat sedan. Starting at $59,950, the 2014 Acura RLX Sport Hybrid Technology is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 28-mpg in the city and 32-mpg on the highway. The top of the line 2014AcuraRLX Sport HybridAdvance , priced at $ 65,950 , is powered by a 3.5L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 28-mpg in the city and 32-mpg on the highway.