Where do you live, what the average temperature is and what you're of driving you do. I can tell you that the computer showing around 40 mpg, or even less, in the winter on trips less than about ten miles is normal for us. Same trips in the summer, around 43-44 mpg.
But who cares? People are way too concerned about their mpgs on this forum. Drive your car and enjoy it. It will be better than your genesis or just about every other car out there, if that's why you bought it.
If you get really low mpgs on warm days for long trips in town on flat roads, then maybe something is malfunctioning and your dealer can take a look, but don't sweat it, yet.
Also, many people find the sport mode to give the best mpg for them. I feel that the EV and ECO modes are marketing gimmicks, anyway. I've never found any advantage to them except for EV when jockeying cars around my driveway.
Search sound and you will find a million (maybe more!) Threads on how to get the absolute best mpg, but why work so hard for a 1-2% increase. Just drive it.
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