The 2023 Genesis G90, powered by a 375 horsepower 3.5L V6 T-GDI engine mated to an 8-speed automatic transmission, starts at $89,495 (including $1,095 freight) while the 409 horsepower 3.5L V6 T-GDI w/ 48V e-Supercharger starts at $99,795. The 2023 Genesis G90 flagship sedan has just begun arriving at U.S. retailers.