The 2017 Hyundai Sonata is available as a 4-door, 5-seat sedan. Starting at $21,600, the 2017 Hyundai Sonata Base (A6) is powered by a 2.4L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 25-mpg in the city and 36-mpg on the highway. The top of the line 2017HyundaiSonataLimited 2.0T (A6) , priced at $ 34,350 , 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 30-mpg on the highway.