The 2002 Isuzu Trooper is available as a 4-door, 5-seat sport utility. Starting at $28,105, the 2002 Isuzu Trooper S 4x2 is powered by a 3.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 19-mpg on the highway. The top of the line 2002IsuzuTrooperS (A4) 4x4 , priced at $ 29,405 , is powered by a 3.5L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 19-mpg on the highway.