my '19 (bought during COVID) has around 30k miles (I have a lot of cars), stock, automatic tranny, 2.0L, recent trip gauge had over 3k miles with an average mpg of just under 19. But that includes all driving off an on road. I like the better torque; also have the 3.6L in another Jeep.
My only complaint, is the lack of instant acceleration, maybe it's the automatic tranny, or hybrid part?? I also drive my wife's Tesla, a manual BMW 330 and I used to have a manual 991 Porsche. IK completely different vehicles ... but jumping in the 2.0L JL I'd almost get in accidents waiting for the Jeep to FINALLY START accelerating!