Purchased a new 2020 fourth generation Kia Optima EX. Here is where all die hards will say "why did you not pony up the extra 1500$ and go all out with the EX+?" As a tall fellow, I am not a fan of sunroofs because you lose headroom and the UVO option has me believe your car can get "hacked". That aside, does anyone know the percentage of total engine failures among those manufactured in North America versus those manufactured in South Koeea? If the vin starts with a number that just means that the car was manufactured in North America. If the vin starts with a letter, it was manufactured in South Korea ect. Please post your comments.