The 2006 Ford Fusion is available as a 4-door, 5-seat sedan. Starting at $17,145, the 2006 Ford Fusion S I4 (100A) is powered by a 2.3L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 23-mpg in the city and 31-mpg on the highway. The top of the line 2006FordFusionSEL V6 (140A) , priced at $ 21,710 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 29-mpg on the highway.