The 2003 Mazda MX-5 Miata is available as a 2-door, 2-seat convertible. Starting at $24,623, the 2003 Mazda MX-5 Miata LS (M5) is powered by a 1.8L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 23-mpg in the city and 28-mpg on the highway. The top of the line 2003MazdaMX-5 MiataShinsen (A4) , priced at $ 24,053 , is powered by a 1.8L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 22-mpg in the city and 28-mpg on the highway.