10.0

really awful
Crashes / Fires:
3 / 24
Injuries / Deaths:
5 / 0
Average Mileage:
48,700 miles

About These NHTSA Complaints:

The NHTSA is the US gov't agency tasked with vehicle safety. Complaints can be spread across multiple & redundant categories, & are not organized by problem. See the Back button — blue bar at the very top of the page — to explore more.

Get notified about new defects, investigations, recalls & lawsuits for the 2012 Hyundai Sonata:

Unsubscribe any time. We don't sell/share your email.

« Read the previous 20 complaints

problem #148

Mar 192021

Sonata

  • 122,000 miles
The vehicle was parked. I tried to turn the car on but it didn't come on, and then I noticed it smoking under the hood. About 5 minutes later there were flames coming from under the hood and quickly spread to the rest of the car.

- Maryville, TN, USA

problem #147

Mar 022021

Sonata

  • 145,000 miles
Brake light switch plunger does not retract as it should when the brake pedal is not being pressed, car looses acceleration and looses power. When driving on cruise control, break will depress and turn cruise off and on in dash.

- Charlotte, NC, USA

problem #146

Feb 082021

Sonata

  • 64,000 miles
For 6 months I have received emergency notification "hybrid system warning! safely stop and do not drive" also "check brakes" most recently the warning lights came on while driving 65mph and the car lost all power. Most often this occurs when the car is parked. The dealership has looked at it twice. The first time they replaced the battery to resolve the issue. The second time they were "unable to replicate the problem" and said there was nothing they could do to fix the problem. As the car lost power while on a major highway I feel it is unsafe to drive. When the warning lights are on the brakes must be fully pressed down to engage. I filed a case with Hyundai but have received no response in two weeks

- Oakland Park, FL, USA

problem #145

Dec 312020

Sonata

  • 95,671 miles
Driving vehicle and sputters as if losing power while driving. Started small no check engine light on while on freeway. Then continued when got off exit and reduced speed then stop car warning light appears. Turned car off waited then problem went away after taking to dealership they said could not duplicate problem now it has happened again. Same issue this time was with my wife and kid on wedding day. Please help us!!!

- Chandler, AZ, USA

problem #144

Aug 052020

Sonata

  • miles
Brake lights are out and when I replace then they blow out within two days

- New Castle, DE, USA

problem #143

Jan 012016

Sonata 4-cyl

  • 81,000 miles
The contact owns a 2012 Hyundai Sonata. The contact stated while driving 55 mph, the vehicle experienced an unknown electrical failure. The vehicle was taken to an unknown dealer, where it was diagnosed and the contact was provided information that an unknown electrical part needed to be replaced. The vehicle was repaired however, the failure recurred. The manufacturer was informed of the failure. The failure mileage was approximately 81,000.

- Chicago, IL, USA

problem #142

Jan 152020

Sonata

  • 110,000 miles
Head lights and tail lights consistently burn out, rear tail lamps caused melting of the assembly on both sides near where the socket goes. Rectified rear lamp issue using lower wattage leds, not a solution for this but a band aid. Car automatic locks have ceased working, fan assembly cut on and off causing failure of radiator. Buttons on steering wheel activate wrong settings often when used. High pressure fuel pump stopped functioning, only low pressure system remains. All problems listed happen intermittently either moving or stationary.

- Titusville, FL, USA

problem #141

Apr 012019

Sonata

  • miles
Hello. I am reaching out regarding concern as to the malfunction of my brake lights. I currently own two 2012 Hyundai Sonata vehicles. The lightbulbs in both vehicles go out within days of being replaced. I was advised by a Hyundai technician that the casing of where the light bulbs is inserted was "melted" and needed to be replaced. I was also advised that my car was not covered under warranty and was not covered under a recall. In my research of this malfunction, I have found that this is not a individualized issue or concern that is isolated to my vehicles. In addition to causing a potential risk of a accident, I am very concerned regarding the potential of a fire due to the "melting" of the casing.

- Riverside, CA, USA

problem #140

Dec 032019

Sonata

  • 70,000 miles
Brake peddle sticking not releasing brake lights to turn of in rear.which caused a shortage..in electrical wiring that shorted out whole dash system and security including power windows glove department etc. Issues when brake light was not releasing transmission was jumping to gear of reverse and drive with out my control

- Woodville, MS, USA

problem #139

Jul 012020

Sonata

  • 79,000 miles
My Hyundai Sonata 2012 recently experienced engine seizure on a 5 lane highway in NJ garden state parkway at 70 mph without any warning what so ever.car was checked for this recall year ago and supposedly software was installed to notify if engine was to fail. There was no warning! dealer confirmed the engine died and is covered under the recall. I also had mentioned concern about the noise under the car. They replaced the engine & serpentine belt and told me to come back in 3 days as it was too early to do the inspection. When I got the car back the noise was still under the car, the tire light came on, back door lock stopped working and ac stopped working I called back and they told me $1500 worth of work to pass inspection. 3 days earlier they said the car was good to pass. Including Continental tires that Hyundai horrible suspension ruined at 16K miles(tire warranty 70K miles) and both sway bars and sway bar link. Which means I could have rolled the car at any curve.axles were changed twice on this car as they told me " manufactory faulty" axles they put on and other suspension parts. Tires were rotated and aligned by them! if that's not good enough person working on my car damaged both of my front doors when letting the car off the lift.then the dealer tried to cover up the damage and sign me the car back! car has some serious electrical issues with interior/exterior. Lights melting, bulbs burning and now the car doors locks. Better yet new recall says if you had your engine replaced you are in a danger of the fire.how am I supposed to trust this "certified dealer" ? + the other 8 recalls and class actions about this car- Hyundai needs to be forced to buy back these all of these cars. Not only is that not safe for me its also not safe for other drivers! I've also been without my car for about a month at this point.

- Allentown, PA, USA

problem #138

Aug 012020

Sonata

  • 125,400 miles
Oil is not sufficient. I'm losing oil fast and there is not an oil leak. I'm hearing a rattle noise.my radio changes media modes on its own.

- Rock Hill, SC, USA

problem #137

Jul 292020

Sonata

  • 135,000 miles
Multiple parts have been replaced on my front end from what mechanics thought were the problem but my wheel still sticks/pull to the left while driving even after multiple front end work and alignments. Also, I've replaced head lights, tail lights, breaks and reverse lights numerous times because something keeps blowing them. When I press the volume button on the steering it changes the screen on the radio. I'm assuming it's something with wiring malfunctioning. The cruise control on the wheel doesn't always work as well

- Montgomery, AL, USA

problem #136

Jul 222020

Sonata

  • 154,500 miles
When the temperature is +95 the car will drive for 15 mins and an alarm sound warning you that the "hybrid system warning - safely stop and do not drive" the vehicle is not responsive and the the engine is making a cracking noise

- Wallingford, CT, USA

problem #135

Jul 082020

Sonata 4-cyl

  • miles
Bulbs keep blowing radio completely went black an no one seems to know the issue

- Summerville, SC, USA

problem #134

Jun 172020

Sonata 4-cyl

  • 97,056 miles
The engine jus started knocking after I got a oil change and tuneup.

- Memphis, TN, USA

problem #133

Jun 082020

Sonata 4-cyl

  • 0 miles
I have purchased my car in 2014. Since I have had this vehicle, I noticed that my brake lights were going out more than the norm (for other vehicles). I have received countless of tickets of the electrical issue that the 2012-2014 Hyundai Sonata owners have yet to get resolved/addressed by Hyundai. I have had several of my police friends and other current/former Hyundai Sonata owners to tell me that they have pulled many people over with the same year/make/model for brake lights. This electrical issue is hazardous for not only me and my child, but any other individuals who share the road with me. The most recent incident was the last and final straw for me. I was driving when another individual informed me that my brake light was out yet again. I went to the autozone to attempt to change my light bulb just to discover that the electrical mechanism that holds the bulb in place is broken. It appeared that the light bulb went through a mild burst of flames. To have this happen, especially as a mother, on the same side as my child sits is unacceptable! I'm sure that if you conduct your own research with police about vehicles being pulled over, you will surely see that the number one reason was because of a broken brake light. I hope to hear from someone soon.

- Fort Washington, MD, USA

problem #132

Apr 252020

Sonata 4-cyl

  • miles
Consumer stated every time I fill up my gas tank on my Sonata the dash board indicates that I have zero gas available this caused my check engine to come on its is a concern because I believe it can cause and accident on the road or the car can catch on fire this situation happens all the time when the car is in motion and when I start it as well.

- Kissimmee, FL, USA

problem #131

Apr 142016

Sonata

  • miles
Tail lights, head lights and break lights keep melting the bulb to the socket leaving me with no break lights and not knowing until someone pulls up N yells at me. It also has caused me to get pulled over numerous times. Advanced auto parts told me their corporate office told them they can not replace them bc it is a known Hyundai issue and it's dangerous that's why their bulbs keep going out of stock for this car. Lights inside the car some times flicker on and off and twice the entire inside of my car went pitch black causing me to have to pull over on the side of the road. I have over 200 pics of other Hyundai with the same issue and I have told Hyundai about it and called corporate about it numerous times. I attached a collage with some places I go N randomly always see others w the saaaame light out or no lights at all!! obviously this is a manufactures defect! I should not have to be forced to pay $400/ per light to fix a socket!!! this has been going on since 2016 and I'm just about tired of it bc it seems to keep getting worse!!!

- Jacksonville, FL, USA

problem #130

Apr 102020

Sonata

  • miles
Tag light keeps blowing an every time the radio is on if I hit a hump it completely shuts off an comes back on after U hit another one so it basically keeps shutting off N keep coming back

- Summerville, SC, USA

problem #129

Apr 192020

Sonata

  • 100,000 miles
The vehicle does not start as it doesn't recognize the key fob. My daughters and wife have been stranded on different occasions as they were not able to start the car. Something is wrong with the electrical as the engine does not recognize the key. I am scared to take the car on long trips as this happens frequently and it can take up to 20 attempts before the engine starts. Please help!!

- Schenectady, NY, USA

Read the next 20 complaints »