Howdy, just bought a 2021 Santa Fe limited AWD. According to Hyundai, all models have an 18.8 gallon fuel tank. Ours is under 15 gallons, I know because I ran it past the fuel warning. Anyone know why the discrepancy? Also for folks looking at these we picked ours up in Salt Lake city, AWD is harder to come buy in our area. Anyhow we put about 700 miles on the car taking it easy (mostly under 55 for break in) and seeing the sights in Utah. Then we booked home about 500 miles at 75-80 mph. Gas mileage at those speeds was 28-29 mpg using the smart mode. Impressive. So far love the car, a lot of tech hope it holds up.