Genesis G80 vs Hyundai Ioniq 6: Specs Compared

Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Hyundai Ioniq 6 burns about $550 of fuel annually against $750 for the Genesis G80. That $200 yearly gap compounds to roughly $1,000 over five years and $1,600 over eight — often more than the price difference between two trims of the same vehicle, and the single largest running-cost line item separating these two.

City and highway economy: the Hyundai Ioniq 6 leads in both cycles — 153 mpg city and 127 mpg highway against 105 and 93 mpg — so its fuel-efficiency advantage holds whether you commute in traffic or cover long highway miles.

Powertrain choice: the Genesis G80 is recorded with 2 distinct engine configurations (SIDI & PFI, SIDI), the Hyundai Ioniq 6 with no. Across 43 recorded Genesis G80 configurations and 16 for the Hyundai Ioniq 6, the wider the engine spread the more the real-world fuel efficiency depends on which version you actually buy, so check the specific model year and drivetrain rather than the headline number.

Drivetrain and class: the Genesis G80 is offered with All-Wheel Drive, Rear-Wheel Drive, the Hyundai Ioniq 6 with All-Wheel Drive, Rear-Wheel Drive. All-wheel drive typically costs one to two mpg combined against the same vehicle in front- or rear-wheel drive, which is worth remembering when the gap between these two is small. The EPA classes them as Large Cars and Midsize Cars respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.