ive heard some similar stories with regards to the Rexton as well, my friend had to replace his auto gearbox, thats the only answer the agent has when there is an issue with the vehicle, replace and quite expensive it was too
but u should not generalize all Korean cars, my cousins 10 year old elantra is still going strong well over 100k mileage wise, my fathers santa fe is 5 years and counting and no major repairs