One problem related to battery 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.
2018 Hyundai Sonata. Consumer writes in regards to rusty brakes. The consumer stated the vehicle had issues start during cold weather. It would take about 15 minutes or longer for the vehicle to turn on. The battery needed to be replaced prematurely.