fairly significant
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
18,662 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2014 Hyundai Sonata fuel system problems

fuel system problem

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2014 Hyundai Sonata Owner Comments

problem #4

May 262016


  • 59,500 miles


I have a push button ignition. Three times this past week, my car has failed to start. When I press the button, all of the lights come on, but the engine does not turn over and when trying to press the break in conjunction with pressing the push start engine button, the break pedal is stiff and does not press downward. The third time this occurred, I was stranded for 1.5 hours. My brother came to give me a "jump" as he thought it was my battery only for sparks to come from my battery and for his cables to get so hot that they melted. I had my car owed to allen samuel's Hyundai in North richland hills, tx the next morning only to be told that because they are unable to "recreate" the issue, there is nothing they can do. I also reached out to Hyundai and was told that since there are no recalls, there is nothing they can do. This is a safety issue and because they are unable to recreate or do not have any recalls, then I am stuck with a lemon car. The second issue I have been facing (which has been ongoing) is the sensor in my gas tank recognizes my tank as "full" when I fill up with gas but this is not indicated on the gas hand readout. Again, this was brought to Hyundai's attention and because they can't "see it", "recreate it" and there are no "recalls", then there is nothing that they can do. Again, this is another safety hazard as I may think I have a certain amount of gas in my car when in reality I do not. The first issue occurs when the car is stationary. The first time I was at home, the second time I was at work and the last time (most recent) I was at a restaurant. I believe the cause of both issues are sensors with the break that connects it to the push button and a sensor in the tank that connects it to the gas hand. The gas hand issues occurs each time I put gas in my car.

- Irving, TX, USA

problem #3

Sep 292014


  • 15,000 miles
1) the miles per gallon reading is unpredictable its advertised to give around 27 combined but I have never reached that 27 mpg, though I drive in low RPM ) the vehicle does not slow down for long distance even after releasing the gas pedal resulting in abrupt braking in lieu of gradual braking in stop & go traffic 2) the drivers side seat malfunctioned at around 15,000 miles 3) the car has a leak from 1000 miles onwards but the service center refuses to help, I called Hyundai they advise me to call the service center, I feel as if after a valuable investment there's no customer satisfaction or customer redressed process. 4) lack of corporate service department that can answer warranty related questions.

- Miami, FL, USA

problem #2

May 062014


  • 150 miles
When starting the car, the "mpg" meter decrease about 1/8 percent every single time I start the car. Dave never received services for sales, services, owners plus and Hyundai refused assistance because they said you will never receive services until your car runs 7,000 miles for "any" services or pay right then and there $100 - 115/hour to 'drive-in' their services! all Hyundai were rude and bias and I will send a letter to the fta federal agencies in the United States.

- Bronx, NY, USA

problem #1

Jul 062014


  • 0 miles
Car is advertised to get 25mpg city and 35mpg highway with a combined rating of 27mpg. I am driving 50-55 miles per day on the highway and 10 miles in the city. I drive this vehicle the similar to my previous car. I am using low RPM acceleration and maintaining a consistent speed on the highway. My cars mpg is averaging 27.5mpg for at least 3500 miles.

- Winter Garden, FL, USA

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