The 2019 Buick Regal TourX is available as a 4-door, 5-seat wagon. Starting at $29,070, the 2019 Buick Regal TourX Base is powered by a 2.0L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 29-mpg on the highway. The top of the line 2019BuickRegal TourXEssence , priced at $ 35,070 , is powered by a 2.0L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 21-mpg in the city and 29-mpg on the highway.