2020 Insight EX
For traffic commuting(stop and go, slow speeds) this can be incredibly fuel efficient. I hear warmer climates help as well. I'm in Los Angeles, and my return commute from work (25 miles) I have a record of 86 MPG! Again, its heavy traffic, careful hypermiling and mostly slow speeds.
I did a road trip LA to Santa Cruz, high speeds, with inclines, and I finished the trip at 46 MPG.
Mileage depends on many factors, but I'd say pretty similar to a Prius MPG.