Our 2020 Mitsubishi Outlander 2.4 PHEV had the same size battery as your vehicle Kezo, in the summer 28/30 at the current temperature 14/15 miles with the heating on, just goes to show how things have advance in the past few years.
Looking at it in comparison with the Across, which has 0.5 kW more useable battery, I’d say it’s sh!t and Hyundai sill has alot to learnš