The 2012 Acura RL is available as a 4-door, 5-seat sedan. Starting at $48,200, the 2012 Acura RL Base is powered by a 3.7L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 24-mpg on the highway. The top of the line 2012AcuraRLTechnology Pkg/Hawaii Only , priced at $ 52,350 , is powered by a 3.7L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 24-mpg on the highway.