The 2007 Nissan Maxima is available as a 4-door, 5-seat sedan. Starting at $28,050, the 2007 Nissan Maxima SE is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 28-mpg on the highway. The top of the line 2007 Nissan Maxima SL, priced at $30,300, is powered by a 3.5L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 28-mpg on the highway.