The 2018 Hyundai Sonata Plug-In Hybrid is available as a 4-door, 5-seat sedan. Starting at $33,250, the 2018 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 2018 Hyundai Sonata Plug-In Hybrid Limited w/Blue Pearl Interior, priced at $38,850, is powered by a 2.0L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated