Engine experienced a catastrophic failure. Driving (normal commute) and clicking noise start coming from the engine. Got louder over a short time, but no dash waring lights came on. Further along the check engine light came, and when it started flashing I pulled over and called for roadside assistance (tow). No other warning lights came on. Engine temp read normal throughout. After the dealer service team reviewed, said the engine block was cracked and metal noted in the oil and filter. I contacted Hyundai USA to see if they would cover engine replacement. After a few days of review and back and forth with the dealer, they declined any claim. Dealer service rep quoted us approx $20k for engine replacement. We opted to sell to salvage company and now need to buy another car. Just over 66,000 miles and complete loss.