The 2010 Dodge Challenger is available as a 2-door, 5-seat coupe. Starting at $23,245, the 2010 Dodge Challenger SE is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 25-mpg on the highway. The top of the line 2010DodgeChallengerSRT8 , priced at $ 41,230 , is powered by a 6.1L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 13-mpg in the city and 19-mpg on the highway.