The 2003 Chevrolet Monte Carlo is available as a 2-door, 5-seat coupe. Starting at $21,160, the 2003 Chevrolet Monte Carlo LS is powered by a 3.4L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 32-mpg on the highway. The top of the line 2003 Chevrolet Monte Carlo SS, priced at $23,560, is powered by a 3.8L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 29-mpg on the highway.