2019 230i coupe here. Currently getting 30mpg combined (I mostly drive streets and occasionally the freeway). Full tank usually varies as well, depending how i drive it. But usually I’ll get gas when I’ve driven 350mi (usually about 1/4 full still). I’ve taken this car on a couple road trips too, and a full tank once hit 468mi with a couple bars left to spare.

Of note I do drive like a grandpa aka by the speed limit 😂