Spark plugs and wires would be the least suspect with this problem. It would sound more of a fuel delivery/induction/high tension output problem. Take the car to a tune-up shop for diagnosis, or to a car parts store. Maybe they can get the fault codes for you. Check the warranty. It may even be best to take the car to the dealer for repair. I had a similar problem and it turned out to be the speed input sensor. No idea what this means but the dealer fixed it and it was covered under warranty so maybe it's just a common problem.
The 2013 Hyundai Sonata has a 6-speed shiftable automatic.
The 2014 Hyundai Sonata has a 6-speed shiftable automatic.
The 2013 Hyundai Sonata-Hybrid has a 6-speed shiftable automatic.
The 2012 Hyundai Sonata-Hybrid has a 6-speed shiftable automatic.
The 2014 Hyundai Sonata-Hybrid has a 6-speed shiftable automatic.
The 2011 Hyundai Sonata-Hybrid has a 6-speed shiftable automatic.
Model year 2011 Hyundai Sonata editions include the Sonata Hybrid, Sonata Turbo, and the Hyundai Sonata SE. Hyundai Sonata is now in its sixth edition of production.
All Hyundai engines are interference engines. The belt must be replaced at 60,000 miles.
You cannot use the 2004 Hyundai Sonata body parts on a 2003 Hyundai Sonata.
Hyundai Sonata was created in 1985.
The 1999 Hyundai Sonata GLS came equipped with the 2.4L 4-cylinder and 2.5L 6-cylinder engines. Both engines had the F4A51 automatic transmissions. As of September 2014 the newest and downwardly compatible automatic transmission fluid specification for the application is Hyundai SP-IV.
What does P0705 mean on a 2011 Hyundai Sonata