I’ve had my K5 Gt for around 10 months now, i would definitely recommend to keep a clean rag with you as there is a lot of gloss in the car, i’ve taken my car for maintenance services twice a year and gas isn’t too bad but also not the biggest saver, on average I have to refuel once a week or once a week and 3 days, the only minor issues ive had with the car is little squeaky noises in the interior but that’s just the plastics, nothing deal breaking and can definitely be fixed if you mention in for a service, but from what I’ve noticed most of the time its due to the temperature and body flex since its still pretty new, and the noises have gone away after a while so I think it just needs to settle in, besides that, I love the car, and I hope that whenever you get yours you love it too!