The 2019 Hyundai Sonata Plug-In Hybrid is available as a 4-door, 5-seat sedan. Starting at $33,400, the 2019 Hyundai Sonata Plug-In Hybrid Base is powered by a 2.0L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated The top of the line 2019HyundaiSonata Plug-In HybridLimited , priced at $ 39,000 , is powered by a 2.0L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated