I try to drive mine the way I drove my '21 Niro LX HEV that was averaging 55 MPG when I traded it in. My first half tank averaged out to 34.1 with mostly city driving. Since topping off, it's sitting around 30 MPG, but we did drive the interstate yesterday for a couple of hours. However, it was hovering around 31 before starting the trip. In all fairness, when I let my husband drive it, he was going over 85 MPH at one point on the way there, so that didn't help matters. I'm really hoping it starts improving to at least 35 average. Considering my regular commutes are typically under 50 and around town, I should be hitting the sweet spot for it.