The 2016 Nissan Sentra is a 4-door, 5-seat Sedan, available in 6 trims, ranging from the S (M6) to the SL (CVT). Upon introduction, the $16,780 S (M6) is equipped with a standard 1.8L, 4-cylinder, engine that achieves 27-mpg in the city and 36-mpg on the highway. a Manual transmission is standard. The $22,170 SL (CVT) is equipped with a standard 1.8L, 4-cylinder, engine that achieves 29-mpg in the city and 38-mpg on the highway. an Automatic transmission is standard.