The 2018 Mazda MX-5 Miata is available as a 2-door, 2-seat convertible. Starting at $25,295, the 2018 Mazda MX-5 Miata Sport (M6) is powered by a 2.0L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 26-mpg in the city and 33-mpg on the highway. The top of the line 2018MazdaMX-5 MiataGrand Touring (A6) , priced at $ 31,270 , is powered by a 2.0L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 26-mpg in the city and 35-mpg on the highway.