The 1999 Nissan Sentra is available as a 4-door, 5-seat sedan. Starting at $11,799, the 1999 Nissan Sentra XE (M5) is powered by a 1.6L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 29-mpg in the city and 39-mpg on the highway. The top of the line 1999NissanSentraSE-L (A4) , priced at $ 15,999 , is powered by a 2.0L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 23-mpg in the city and 30-mpg on the highway.