The 2021 Hyundai IONIQ Hybrid is available as a 4-door, 5-seat hatchback. Starting at $23,400, the 2021 Hyundai IONIQ Hybrid Blue is powered by a 1.6LL , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 58-mpg in the city and 60-mpg on the highway. The top of the line 2021HyundaiIONIQ HybridLimited , priced at $ 31,400 , is powered by a 1.6LL , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 54-mpg in the city and 56-mpg on the highway.