The 2020 Nissan Sentra is available as a 4-door, 5-seat sedan. Starting at $19,310, the 2020 Nissan Sentra S is powered by a 2.0L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated 29-mpg in the city and 39-mpg on the highway. The top of the line 2020 Nissan Sentra SR, priced at $21,650, is powered by a 2.0L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated 28-mpg in the city and 37-mpg on the highway.