We purchased Huyndai Tiburon which suppost to have 100, 000 miles warranty. At 60, 150 miles the sun roof cardboard cover stocked in the railings. All dealers refused the repair. The head quarters of the manufacturer in the USA and Korea didn't answered for our many e-mails. Also they advertise that 4 cylinder Huyndai/KIA Optima makes 31 miles per gallon on hwy. We have one Optima and asked many other owners about it. The car makes 20 m/p/g in city and 26 m/p/g/ on hwy. My 6 cylinder Chevy Impala makes 24 m/p/g in city and 30-31 m/p/g on Hwy! read full review »