The 2012 Hyundai Genesis is available as a 4-door, 5-seat sedan. Starting at $34,200, the 2012 Hyundai Genesis 3.8 is powered by a 3.8L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 28-mpg on the highway. The top of the line 2012HyundaiGenesis5.0 , priced at $ 45,500 , is powered by a 5.0L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 25-mpg on the highway.