The 2000 Mazda Millenia is available as a 4-door, 5-seat sedan. Starting at $25,415, the 2000 Mazda Millenia Base is powered by a 2.5L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 27-mpg on the highway. The top of the line 2000MazdaMilleniaMillennium Edition , priced at $ 31,165 , is powered by a 2.3L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 28-mpg on the highway.