The 2002 Mercury Mountaineer is available as a 4-door, 7-seat sport utility. Starting at $28,950, the 2002 Mercury Mountaineer 4x2 is powered by a 4.0L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 21-mpg on the highway. The top of the line 2002MercuryMountaineerAWD , priced at $ 30,950 , is powered by a 4.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 20-mpg on the highway.