Interior quality of this car is very low in my opinion, despite the fact some parts are taken from BMW. I usually wipe of all plastic trims with 50:50 mix of water (filtered but not distilled) and isopropanol and even thought sometimes there are markings on the interior. On the driver's door panel I can already see a small marking from my left knee, from pressing against the door during spirit driving Today I used leather conditioner and there were white markings on the back of the seats after applying it, so apparently Toyota used different material on the back, front surfaces were OK. I never experienced anything like that on my 12 years old NCFL Miata.