My wife has a 2022 Hyundai
My wife has a 2022 Hyundai Santa Fe Limited with the 2.5L Turbo. It is almost dead accurate. Usually it’s within .3 mpg and often spot on. I recently bought a 2023 Tucson, but it is consistently showing much better than I’m actually getting. I just filled up and the computer said 36 mpg. However the calculator revealed 32.55. I can live with the mileage, but I wish the computer was accurate. I suspect on some vehicles at least part of the difference is the fuel in the “neck” leading from the filler to the tank. If the neck is very long it could easily hold a quart of fuel, and the computer may not account for that extra.