One problem related to engine stall has been reported for the 2018 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Hyundai Sonata based on all problems reported for the 2018 Sonata.
I took the car for his first oil change and they applied a recall "software update" right after going out driving in the highway the engine started stalling not going more that 22mph, check engine on and problem in screen saying to return to dealer. I did right after and they said it was the engine wiring harness. . They game me a rental car because the harness is not in "stock" so lets see how long it takes. . I just noticed there is a lot of the same problem reported to this car with the same problem. 4221 miles brand new sel+ model. . .