Happy and no regret owning 2 Kia, 2013 cerato K3, 2020 Kia Grand Carnival. both solid and no major issue.

RV is more or less the same if you count in the loan interest and higher price tag on JP car, and JP car used to give lower spec than Kia.

Sparepart is more or less the same if same segment of car original vs original parts, just that not much option on OEM unless you order online and wait for delivery.

FC is on the higher side, I think main reason is KR car is heavier, solid build with better security feature, also it come with a bigger wheels for better driving experience.

If new K3 model is available and cheaper than JP car, I will not consider JP car and dive back to Kia.

Do share what is the story dealer share with you that cause your doubts on Korea car.