The 2021 Chevrolet Suburban is available as a 4-door, 9-seat sport utility. Starting at $52,300, the 2021 Chevrolet Suburban LS 4x2 is powered by a 5.3LL , 8 -cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 20-mpg on the highway. The top of the line 2021ChevroletSuburbanCommercial Fleet 4x4 , priced at $ 54,000 , is powered by a 5.3LL , 8 - cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 19-mpg on the highway.