I typically get around 30 miles per "bar", which leads me to believe each one is around a gallon.
I know a lot of people zoom on the highway, but anything over 65-70 mph reduces gas mileage.
Similar for our 2017 Sonic hatch. Although, wife drives it 6 miles to and 6 miles back from work so barley gets warmed up. Then MPG is about 26 to 27 depending on the cold winter driving temps.
Still . . . it's only maybe one fill up every 2 weeks and still has usually has two bars left.
On the highway the best I've gotten is 36MPG one time at mostly 55 MPH.
On the interstate at 65 to 70 MPH usually see 30 to 31.
We've driven on state secondary roads for several hundred miles a few times and get 32 to 33 at 55 to 60 MPH steady driving.
But never see that normally if stop and go plus interstate speeds are mixed in.
I'm pretty satisfied with that and especially like that the 1.8L is MPFI rather than direct injection with those inherent issues. The only other car I know currently that uses multi port fuel injection is the Kia Soul 2.0L. The DI 2.0L would produce 161 to 164HP while the MPFI engine would do 148 HP but still have decent pep at take offs, cruising and even passing when the revs are up.
Kia stopped using the direct injected 2.0L since it had a lot of fuel dilution and resulting oil consumption issues.
Our oldest daughter drives a 2018 Kia Soul+ and I've worked on it. I really like it except for the DI oil consumption. But 2020 and up Kia Soul all use the 2.0L MPFI now.
I'd almost want to get one now before the whole world goes EV.
Kia has gotten some bad raps for the oil consumption and both the 1.6L turbo and 2.0L DI engines, but the 2.0L MPFI engine has been generally fine.
I'd like to see if their are any other small cars still using MPFI.
For basic transportation and better reliability I'll take a car with old school MPFI any day.
