Two problems related to transmission failure have been reported for the 2011 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Hyundai Sonata based on all problems reported for the 2011 Sonata.
Unfortunately, at 50,000 miles my car began having major issues. It has been less than a year, since I bought my used car, and it is having major mechanical issues. Every time I go from parking to drive, or drive to reverse, my car jumps. While on the highway it jumped in motion. After that incident I was afraid to drive my car again. My mechanic told me it was the transmission. A new transmission costs over $3,000 dollars! I am a student and do not have that money, nor will I have it anytime soon. The dealership that sold me the car, gettel Hyundai of charlotte county florida, never advised me that Hyundai's have been know to have transmission failures. I invested money into a car that I cannot drive because it was faulty when sold to me.
While driving my new 2011 Hyundai Sonata GLS sedan with 200 miles on the odometer, the transmission failed completely when a transmission hose blew off releasing all the oil out of the transmission. Once at the dealership they showed me that hose clamp for the hose had never been attached correctly at the factory! the car is at the dealership for repairs. It is not know at this time if the transmission has been damaged due to the loss of oil. We were not hurt and didn't lose control of the car. This incident occurred on a flat piece of highway, should it occurred in hilly terrain or passing another vehicle the results could have been much different since the car became inoperable. Very disappointing since the car had only 200 miles on it!.