One problem related to car will not accelerate has been reported for the 2012 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2012 Hyundai Sonata based on all problems reported for the 2012 Sonata.
The lights on the car would not shut off when locking and activating alarm. I restarted the car and shut it off again, then they shut off. I awake the next morning and the car would not start, the battery appeared to be dead. After a jump I left for work and the car would not accelerate when I applied pressure to the gas. The car then accelerated rapidly. The lights on the dash would get considerably brighter and then back to normal like a flash when activated the turn signal occasionally. The lights on the dash will also blink out from time to time. Took back to the dealer and they said they took it to a Hyundai shop. I got it back yesterday but it still appears to be doing the same problems. I haven't even made my first payment on it yet.