So my 2013 Kia Opt8ma seized while doing like 65 on the freeway! Out of nowhere!!! I love my car I never had problems with it before only problem I had was that my car would say there's 40 miles left of gas and it would just cut off like it ran out of gas as soon as I would put gas in the car it would start again and run fine. About 3 weeks before this incident were the engines seized up, I had got a full synthetic oil change. When the car cut off while I was driving, Come to find out there wasn't a drop of oil in it anymore. And then the car started rattling and making so many noises.... I took it to Kia and they are replacing it due to the fact that I have a GDI engine. My question is why in the world would I Has to pay $750 the the guy at the dealership says it's for the spark plugs that's a replace of 2 hoses and To clean something out I forget what exactly so those 3 things are gonna cost $750 he says if I don't do him then he is gonna look at me as if I'm not good my maintenance....?.. Why would you put an engine in a car a brand new engine by the way and not replace the spark plugs or why would it not have spark plugs? I just don't feel comfortable with what he saying please help me...