Howdy and welcome. I'm the poster boy for the Kia Stinger. Hah. Mine is nearing three years and over 40K miles; not a trace of an issue. I got this car primarily to encourage me to consent to road trips (as my wife's "ground support", she flies); I had read the promo book all winter and took the "fatal test drive" and then bought it three days later. It's everything that Kia touts, asserts and brags it up to be. And the quality and reliability are taken to a whole new level; which was the point of producing a concept car that is "The Gran Turismo Redefined." They certainly did that! It has retro cues all over it, but especially in the body lines and the interior: my GT1 even has the "T" shifter, which is so old school.

(I like it.)
Individual vehicles can manifest flaws. If you read for any extended time on here you'll run into this list that annoy and disappoint (but again, most vehicles are like mine and don't have issues):
Paint that can chip or flake easily (this was a real problem with the Sunset Yellow, enough so, that Kia did a recall on that color).
Brakes that shudder (but aftermarket pads correct this; some get aftermarket rotors too; and some correct the shudder by simply rebedding the OE pads).
Various creaks, squeaks, rattles, thumps, etc.; but commonly from the hatch lid and sunroof; most of these are correctable, but some are pernicious and stubborn.
The dark chrome trim along the tops of the glass can get discolored/spotted (replaced under warranty).
The nappa leather can crease excessively and wear along high impact areas (this one is super rare, by the way).
The sound system fades to the rear; or turns itself off; or is judged to be "shrill/harsh" (audiophiles in our midst, mine is excellent).
Drivetrains, a very few reported on here, have failed; either tranny or the actual engine (possibly even more rare than leather wear).
The tl;dr version is: check the paint very carefully for pinprick holes in the clearcoat, any chipping that isn't blatantly in front from attrition, or any other flaws from the factory or handling during transit. And test the brakes during the test drive. Listen for any extraneous noises during the test drive. Otherwise, only time will tell, as with any car.
Good luck!
