The 2005 Mercury Montego is available as a 4-door, 5-seat sedan. Starting at $24,365, the 2005 Mercury Montego Luxury (100A) FWD 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. The top of the line 2005MercuryMontegoPremier (130A) AWD , priced at $ 28,590 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 27-mpg on the highway.