The 2018 Chevrolet Tahoe is available as a 4-door, 9-seat sport utility. Starting at $47,500, the 2018 Chevrolet Tahoe LS 4x2 is powered by a 5.3L , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 23-mpg on the highway. The top of the line 2018ChevroletTahoePolice Vehicle 4x4 , priced at $ 49,340 , is powered by a 5.3L , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 22-mpg on the highway.