The 2021 Hyundai Ioniq Plug-In Hybrid is available as a 4-door, 5-seat hatchback. Starting at $26,700, the 2021 Hyundai Ioniq Plug-In Hybrid SE is powered by a 1.6L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated The top of the line 2021 Hyundai Ioniq Plug-In Hybrid Limited, priced at $33,150, is powered by a 1.6L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated