10.0

really awful
Crashes / Fires:
3 / 4
Injuries / Deaths:
2 / 0
Average Mileage:
25,386 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.

2015 Hyundai Sonata fuel system problems

fuel system problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2015 Hyundai Sonata:

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

2015 Hyundai Sonata Owner Comments (Page 1 of 3)

problem #59

Jan 022023

Sonata

  • miles

A D V E R T I S E M E N T S

The driver's seatbelt does not retract. The engine is burning oil.

- Tequesta, FL, USA

problem #58

Sep 262023

Sonata

  • miles
Car stalls intermittently. When at a stop sign or red light, then when my turn to go I step on gas peddle, car starts to go, then stalls. I have to let off gas pedal and step on it again to get car going. This is dangerous as it leaves me in intersection and vulnerable to oncoming traffic. I had a mechanic check it out and they cleaned Throttle body, but that did not fix problem. No trouble codes showing up apparently.

- Crossville, TN, USA

problem #57

Sep 112023

Sonata

  • miles
Hybrid car with various hybrid system failures that results in sudden loss of power while driving. this has occurred 3 times to me while on the highway (I-75 in South FL). Car suddenly loses power, could not accelerate but I was able to get off the highway safety. This has been reproduced at the dealer and they first replaced the hybrid generator then the hybrid battery and ECM and now it occurred again yesterday while I had 2 children with me and now they blame the transmission. This is a dangerous car that should be recalled and investigated for the true cause of sudden and unpredictable power loss.

- Coral Springs, FL, USA

problem #56

May 152023

Sonata

  • miles

A D V E R T I S E M E N T S

Noticed a smell of gasoline in the passenger compartment and took it to my local mechanic. Upon his inspection he found that the gas smell was caused by a crack on the plastic connector for the fuel line on top of the fuel pump. He showed this to me and recommended replacing the fuel pump as the connector is built into the pump and there was no proven way to fix the leak. Said leak caused gasoline fumes to fill the passenger compartment and therefore a risk of igniting a fire in the passenger compartment.

- Heber Springs , AR, USA

problem #55

Aug 172022

Sonata

  • 163,402 miles
Strong gas Odor from inside the vehicle low pressure fuel pump is leaking from underneath the back seat of the vehicle down the side of fuel tank onto the exhaust it can cause a fire fuel pump is cracked on nipple the pressure line connects to that runs to the motor on the vehicle repair cost is over 1000 dollars to replace the fuel pump to fix the issue

- Wittmenn, AZ, USA

Search CarComplaints.com for these popular complaint phrases...

problem #54

Jul 282023

Sonata

  • miles
I have taken my car to mechanic and they have told me that my car is leaking gasoline. They recommended that I go to the dealer. When I called the dealer they told me that I would have to pay for the diagnosis. This is obviously concerning as gasoline fumes are toxic. There has been no warning lamps turned on this whole time but can definitely smell it when I finish my ride.

- San Diego, CA, USA

problem #53

Aug 082023

Sonata

  • miles

A D V E R T I S E M E N T S

Component : High pressure fuel pump Is being fixed as speak ; can provide statement and diagnostic from mechanic. 2. The first time the fuel pump failed it went out on the freeway, I was accelerating onto the freeway and I hear a big pop sound, the whole car went into limp mode. Leaving to cruising on the freeway. No warning, no check engine. I had children in the car. The issue was deemed ; a faulty fuel pump. Second time mechanic let me know there was a crack in the pump ( had been replaced less than a year ago ). Because of the crack, gas & fumes filled the cabin of the vehicle, to the point where you could not operate without having all windows down. The vehicle could have caught fire ! Me and my family could have been hospitalized because of these fumes coming through the vents. Again, no check engine, nothing ! That repair is being fixed as we speak. Another $1,200 job. 3. No the vehicle has not been inspected by insurance or law enforcement. Only by licensed mechanic shops. 4. There were no warnings, Both times the high pressure fuel pump failed. No prior signs of the issue the first time & the second time the gas smell was so unbearable, that was the indication.

- Sacramento, CA, USA

problem #52

Jul 032023

Sonata

  • miles
Engine failure due to a problem with the type of engine. Hyundai denied warranty and class action settlement claim, due to exceptional neglect. All oil changes etc were accounted for. the car with no warning, had been driving great, lost all power and left me and my two grandchildren on the side of the road. The Hyundai dealership confirmed that the engine was blown. There were no warnings

- Bethel, NC, USA

problem #51

Jul 182023

Sonata

  • miles
Hyundai is having failed engine problems after certain amount of mileage. The engine is burning oils with no leaks anywhere in the engine. You change engine oil after a week we will see the engine light flashing on your dashboard.This is my 2nd vehicle with the same problem. Thank you

- Copperas Cove , TX, USA

problem #50

Oct 012022

Sonata

  • miles
My 2015 Hyundai Sonata has issues when switching from eco-to standard to sports, it constantly shakes when approaching a red light or stop.. my vehicle is constantly stock and vandalize and stole. Need you to easy assessability by thieves. this constitute higher insurance for me and consistent problems

- Las Vegas, NV, USA

problem #49

Apr 282023

Sonata

  • miles

A D V E R T I S E M E N T S

While driving on a highway, I heard a rattling sound, which could best be described as tying cans to the car and dragging them along the road. I had never heard this noise before. No safety indicator lights turned on to alert me of any issue. With minutes of first hearing the sound, a very loud pop noise could be heard, followed by immediate engine power failure. I was able to navigate off of the highway, into a more residential area. Upon the vehicle coming to a stop on its own (I was not able to apply the brakes at all), a dark cloud of smoke starting coming from underneath the hood. Seconds later, it burst into flames. I was able to safely exit the vehicle with my dog, but if traffic were any heavier, there would have been no safe way for me to get off the road and to a safe location

- Stoughton, MA, USA

problem #48

Mar 172023

Sonata

  • miles
I have a used 2015 Hyundai Sonata that I purchased from a Hyundai dealership in December 2021 (due to the chip shortage, I had to purchase used). A few months later In June 2022 I was driving on the freeway and my car felt like it was losing acceleration. I was already planning to exit the next exit to go to my destination and as I was exiting and came to stop at the red light before I could then turn right.. my car started to violently shake. Ultimately, after going to my own car place the following day and them determining that the fuel injectors and the computer were not talking, I had it towed to Hyundai where after another 4 days they also determined it was that problem and they replaced the computer under warranty. Well today I was again on the toll road / freeway and I was in the fast lane, I suddenly felt a strong jolt and my malfunction light came on and it was blinking on the dash, I knew not to drive it based on the light and as I steered to the right shoulder to slow / stop and call AAA I could feel my car just lightly shaking again. My car is now at the same Hyundai dealership where I purchased it and I-??m waiting for diagnostics on the problem. Before this all happened, the first time in 2022 I was having sporadic issues with pressing the start button and there was a bit of a delayed start at times, even after the computer was replaced I-??ve still had hiccups with the start button at times but it-??s been very sporadic and it has never been a starter issue (had my car place already check that). So I-??m now waiting to hear if the computer indeed failed for a second time. They cannot assess my car until Monday or Tuesday at the dealership (today was a Friday, my car was towed there at about 11am today). If the computer did fail again, it lasted about 14,000 miles before it just died again. Quite frustrated at the moment. I already contacted Hyundai corporate and opened a second case today regarding all of this.

- Irvine , CA, USA

problem #47

Jun 122022

Sonata

  • miles
Sensors lights would indicate an issue and would disappear sometimes without any reason (mainly Check Engine and Tire Pressure Sensors). Indicators would trigger the opposite direction (indicate right and the left indicator would turn on). Burning more fuel than expected. Primary fuel pump stopped working resulting in car stopping in the middle of the road.

- Danville, PA, USA

problem #46

Sep 012019

Sonata

  • miles
Please refer to prior complaint #11505068 I want to add the fact that this vehicle's engine was replaced on or around Sept 1, 2019. This dealer asked me who replaced the fuel pump, and I responded it was replaced by Rick Case Hyundai where the car was brought to with the seized engine.

- Boca Raton, FL, USA

problem #45

Sep 122022

Sonata

  • miles
I reported a fuel leak while the vehicle is in motion to the dealer on 9/12. They had the vehicle 3 days and could not find the leak although the service manger agreed he smelled fuel when the vehicle was brought in. They released the car without repair.

- Boca Raton, FL, USA

problem #44

Nov 252022

Sonata

  • miles
This is the third time this has happened. The car just starts to beep and stops working wherever it is. Its died on the highway and another busy road during rush hour causing a dangerous backup in which the police needed to be called. The car just beeps and flashes on the dash "Hybrid System Warning! Safety Stop and Do not Drive". Also, "check charging system". The car just stops and basically dies on the road when this light comes. When this happens the steering wheel does not really work and the gas/breaks have limited function. This could cause a major accident on a major highway or even off of a highway. I am quite surprised that there has not been a recall for this serious safety concern.

- Midlothian, VA, USA

problem #43

Oct 132022

Sonata

  • miles
Strong odor of gasoline noticed after driving vehicle and smell remained present for a few hours after ending the drive. Found out that many drivers for the Hyundai Sonata and Kia Optima have had same complaints and the issue is a component of the fuel pump that is cracked. Traced it back to my vehicle, and that in fact is the problem. Since gas is combustible, this is a seriously dangerous defect.

- Ventura, CA, USA

problem #42

Sep 262022

Sonata

  • miles
While I was driving, my check engine light came on. It wasn-€™t flashing so I was going to continue driving to a parts house (because the dealerships around me were closed) and have them check the codes that were present. Immediately after I had that thought, I noticed the car was smoking and the battery light and the traction control light had come on, so I proceeded to pull over and shut the vehicle off. I got out and noticed the hood had soot on the edges. I called 911 and watched the car go up I-€™m flames. This all happened in less than a mile. I noticed a fluid of some sort had sprayed out of my vehicle onto the road and the underneath the vehicle was coated in the fluid. This is still being investigated but I know of a lot of Hyundai/Kia vehicles have caught on fire while driving. I-€™m not 100% sure of the cause yet, but I want to document that this did happen to my vehicle. I would love to update as soon as we figure out what has caused the car to catch fire while I was driving.

- Eldorado, AR, USA

problem #41

Sep 072022

Sonata 4-cyl

  • miles
This is yet another incident of a Sonata Hybrid hybrid flashing a warning to the driver and the the engine shutting down. This time it was Sep 7, 2022 in Morristown, TN. A brief internet search led to this: https://www.tsbsearch.com/Hyundai/17-HC-003-1 indicating that the issue is known to Hyundai. This is definitely a safety issue, this is a known problem, why was no recall issued?

- Morristown, TN, USA

problem #40

Aug 142022

Sonata

  • miles
My daughter was driving on the interstate when the car went into limp mode and the engine light was flashing. We had it towed to hyundia dealership where they did an engine update. Had it for 3 months when it did the same thing to her again. Had it towed again to same dealership where they are telling me it needs a new engine.

- Holdenville , OK, USA

Read the next 20 complaints »

Not what you are looking for?