Hello! I am currently looking for a second hand i30N Fastback , 2019. The car looks and runs great, but I've notices a very strong Whistle/flute sound when accelerating. Changing drive modes did nothing. It sounds like a failed turbo, but it's waay stronger and louder. Is this repairable? Should I be worried about this? I really don't want to buy a car and have it in the shop 24/7 for repairs. Thank you!