im a big fan of the kona in theory, how has it been to live with? i'm assuming it's been generally reliable?
Dead reliable. Nothing but scheduled maintenance in 60k miles.
what are the rough empeegees, and is premium fuel (because turbo) required?
I drive mostly secondary roads in VT, which means mid-speed highway, not too much start/stop and also mostly below 60mph, so I probably present a best case mileage scenario, that said it handily beats the EPA estimate and I average about 34mpg. I have seen 1/2 tank averages as high as 43mpg for ideal trips. It runs "fine" on 87 octane, but it runs noticeably better on 93, or even better yet, non-ethanol 91. It loves non-ethanol 91 and it perks right up on the stuff, I have several stations that offer it in my area so I typically feed it what it likes. Running on ~10% ethanol 87, it gets much closer to the EPA rating. At fast highway speeds the mileage dips a bit, as it's not the most aerodynamic thing on the road, but it's a great high-speed cruiser and Hyundai's lane keep assist, which is certainly not actually self driving, works great.
how comfortable are the driver/passenger seats?
Frankly, it's probably not a vehicle that fits big people very well. It is small, and the seats are comfy and have pretty good bolstering, but they are bit on the narrow side for wider individuals. Not a problem for me, but it fits me snuggly, so I recognize people bigger than me may find it tight. Bottom cushion is the right balance between soft and firm to prevent pressure points, and the back shape is good for average height people. Only the driver gets height/tilt and lumbar adjustment, but the passenger seat has a good middle height/angle. The lumbar adjuster on the driver side doesn't quite hit the right spot for me, I think it might be better positioned for a taller person (I'm 5ft 8in).
In all I really like it, it's moderately entertaining to drive, with excellent chassis balance that allows you to push it pretty hard when you feel like it. The AWD works well is snow and on dirt roads, the ESC allows some slip angle and it actually drifts on loose surfaces quite well in sport mode with very little driver input, with TC and ESC fully off it runs into the torque-limiting of the transmission shift program before it gets really super entertaining (except on very slippery surfaces), which is a bit of a bummer, but It's better than almost every other small CUV. Actually I can't think of one that's better, but I always leave the possibility open that there's something better out there I haven't driven. (no, it's not really a Macan competitor, but it's closer than anything that isn't an Audi S-Q3)