CarComplaints.com Notes: The 2011 Sonata has a seriously defective engine that seizes without warning. It was awarded the dubious honor of being the first CarTalk / CarComplaints Turd of the Week in late September 2015.

A class action lawsuit was filed in May 2015 against Hyundai that claims the 2.4L Sonata engine is defective. More info here.

10.0

really awful
Crashes / Fires:
18 / 81
Injuries / Deaths:
15 / 0
Average Mileage:
72,975 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.

2011 Hyundai Sonata engine problems

engine problem

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2011 Hyundai Sonata Owner Comments (Page 15 of 45)

« Read the previous 20 complaints

problem #611

Aug 092019

Sonata

  • 124,000 miles

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

Vehicle shut off while driving on the highway. Not the battery, belt, has oil and antifreeze almost caused a major accident with my 17 year old driving

- Port Saint Lucie, FL, USA

problem #610

Aug 032019

Sonata

  • 137,000 miles
The contact owns a 2011 Hyundai Sonata SE. The contact stated that while driving, there was a fuel odor present. The contact noticed smoke coming under the hood and then flames. The vehicle was stopped and the contact exited the vehicle. The vehicle was engulfed in flames and destroyed. The fire department extinguished the fire. There were no injuries and no police report filed. The contact was not sure if a fire report was filed. The vehicle was towed to the junkyard for inspection by the insurance company. The dealer verified that there were no recalls and the manufacturer issued a case number and promised a callback. The engine was replaced by an earlier recall and had 20,000 of mileage at the time of the fire. The failure mileage was 137,000.

- Sherman, TX, USA

problem #609

Aug 022019

Sonata

  • 141,455 miles
While driving vehicle it fully shut off. It had been making a loud noise for a while and burning oil frequently so we took it to Hyundai for the engine recall and they said nothing was wrong with the engine. Now the car shutoff on a major highway in the bay area (richmond parkway) S and now won't crank or start. Took the car to midas to do a engine diagnostic and wasted money because they said they couldn't do the full check without the car cranking. Mechanic thinks a rod or piston is the cause. Called Hyundai and they are giving the run around as to seeing about the issue. Need help asap. I'm a mother of four children and need help.

- Antioch, CA, USA

problem #608

Jul 192019

Sonata

  • 135,000 miles

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

I had smelling a gas smell coming from the vents on Friday July 19th andi took it to Firestone for a new battery and a oil change. I called the Hyundai dealership because Firestone told me about a new recall for the fire pressure fuel regulator and they highly suggested I take it into them. I called Hyundai and they said for me to bring it in and I didn't need an appointment so I told them I would be there around 3-4pm yesterday. So I left work early, picked up my car from Firestone and headed to the dealership which was about 10 miles away. I got on I-35 doing about 40mph or so because of traffic. All of a sudden the car next to me starts honking and waving saying my cars of fire. I try to apply the break but there was no pressure. My instrument column lit up like the 4th of July and then almost immediately smoke starts coming in from the vents, dashboard and floor. So my only option is to tuck and roll doing about 35-40mph on one of the busiest highways in austin. So I tuck and roll, people are stopped to help. I see my car continue to roll into the barrier and while car burst into flames.

- Bastrop, TX, USA

problem #607

May 032019

Sonata

  • 7,000 miles
The contact owns a 2011 Hyundai Sonata. The contact stated that the vehicle was repaired per NHTSA campaign number: 15V568000 (engine) by happy Hyundai (9121 S cicero ave, oak lawn, il 60453, (708) 422-9300). Shortly after the repair, the vehicle stalled and was unable to be safely driven. The vehicle was taken back to the same dealer where it was determined that further diagnostic testing was needed. The vehicle was not repaired. The manufacturer was notified of the failure. The approximate failure mileage was 7,000.

- Blue Island, IL, USA

problem #606

Mar 012017

Sonata

  • miles
The contact owns a 2011 Hyundai Sonata. The contact stated that the engine failed to function normally. The vehicle was taken to atlantic Hyundai (193 sunrise hwy North service rd, West islip, NY 11795, (631) 587-0700) where it was repaired per NHTSA campaign number: 18V934000 (engine, fuel system, gasoline). The remedy failed and the check engine indicator illuminated; however, the dealer refused to repair the vehicle again. In addition, the tail lights shorted out numerous times and the bulbs were replaced more than five times. The vehicle was unable to be driven due to the faulty engine. The manufacturer was notified of the failure and did not assist. The failure mileage was not available.

- Central Islip, NY, USA

problem #605

Jul 032019

Sonata

  • 162,000 miles

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

Driving on a busy 4 lane highway at 50 mph and motor seized with no warning. This vehicle has had a motor recall and was brought to a authorized dealer in 2016 for an inspection after we received the first notice. We were told that our vehicle was fine and no repairs were done at that time. We received a second notice for the same issue a few months ago stating that Hyundai was extending the warrantee for the motor because of the same motor issue it was checked for in 2016. We are over the extended warrantee mileage as this vehicle is used daily as a commuter vehicle traveling the turnpike daily at 70 mph had this happened on the turnpike the results could have been very bad as most vehicles traveling the turnpike are traveling at greater speeds than 70 mph. Hyundai needs to be accountable for all vehicles with this motor issue regardless of the mileage it is a true defect and safety issue.

- Greene, ME, USA

problem #604

Jul 102019

Sonata

  • 145,000 miles
Vehicle will shut down while driving down the road. No warning lights or sounds. The engine will just shut down completely. Engine starts up again but will again shut down while driving. No codes will come up on the ECM when scanned at a mechanic shop. No way to tell what is going on. Hyundai dealer has no answers for me.

- Rochester, MN, USA

problem #603

Jun 262019

Sonata

  • miles
Takata recall it started like 3 weeks ago sounds like the motor is knocking. Then a week ago my airbag like wont go off.

- Saint Louis, MO, USA

problem #602

Jul 072019

Sonata

  • 135,000 miles
Engine failure

- West Covina, CA, USA

problem #601

Nov 212018

Sonata

  • miles

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

Car uses 1 quart of oil approximately every 500 miles

- Centereach, NY, USA

problem #600

Jul 042019

Sonata

  • miles
Car randomly would not accelerate and car came to a stop and just would not cut back on. There is a engine recall on my car

- Douglasville, GA, USA

problem #599

May 122019

Sonata

  • miles
Takata recall on my engine and they are saying my steering wheel doesn't have a recall but it's really bad and it makes loud noises and gets louder when you go 70mphg where it shakes really bad.

- Halls, TN, USA

problem #598

Jun 042019

Sonata

  • 630,000 miles
I was driving down the highway between lamar, Colorado and granada, Colorado, I was slowing down from 65 mph to 30 mph pulling into granada. All the dashboard lights came on and the car completely quit. I couldn't use the steering or the brakes. I was able to pull onto a side street. We could not get the car to turn back on. We towed it to the mechanic in wichita, ks.

- Liberal, KS, USA

problem #597

Jun 222019

Sonata

  • 197,260 miles
I was driving West on sunnyside road after leaving the parking lot of new seasons. I could see that the light was red and I pulled out onto sunnyside road. It was about 200 feet to the traffic that was stopped. I was doing about 20 mph when I realized that my car was not going to stop. I pushed hard onto the brakes but the car continued foreward under the pickup in front of me. Even with the airbags deployed I had no control. I was pushing the truck foreward. The other driver turned onto 157th ave and I was still unable to stop the car. I also turned right onto 157th ave. It was up hill I turned off the key and it came to a stop. My wife was pannicking and so was I. the car was filled with smoke and a lot of heat. My wife was screaming for someone to call 911. The driver of the truck rushed back to see if we were all ok. He called 911. My wife was sore as the airbags deployed and hit her in the chest. She had pain in her neck too. I was ok at the moment. I was worried about the other driver. He said that he was fine. He said that he had to honk his horn to get the car in front of him to move. They did and he was able to turn right. I am upset with ron tonkin Hyundai as I have had to wait almost a month to get an appointment for my oil change and the recalls taken care of. The first recall was for the air bags. The second recall was for the high pressure fuel pipe may have been damaged misaligned or improperly torqued when the engine was replaced allowing the fuel to leak. I am very upset with ron tonkin Hyundai as I have had to wait for almost a month to get an appointment. Jennifer lopez the service advisor. My appointment was set for June 26th 4 days after the accident. I went in to change the cars as I have a 2004 elantra. I have free oil changes on both cars. She told me that the recalls were not the reason and asked me if I was going to buy another Hyundai.

- Damascus, OR, USA

problem #596

Jun 202019

Sonata

  • 127,000 miles
The car exploded, burned and is a total loss. As the vehicle was in motion, the engine began to smoke. Gas then began to leave and the stench of gas was strong. Upon pulling over in a parking lot of a fast food resturaunt, a fire started in the engine area and the fire began to rapidly spread. As I got out of the car the car exploded. The dekalb county fire report number is [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Lithonia, GA, USA

problem #595

Jun 212019

Sonata

  • 130,000 miles
I was initiating to park my car and it accelerated on its own and took me and my daughter over a curb. As it took us over a curb, her seatbelt unbuckled and caused her car seat to flip over.

- Las Vegas, NV, USA

problem #594

Jun 132019

Sonata

  • 120,000 miles
While driving the car I heard a knocking noise under the hood, the oil light indicator came on and there was as oil burning smell. The car just stopped running and stalled out.

- Willingboro, NJ, USA

problem #593

May 302019

Sonata

  • 79,899 miles
My car soon I purchase is being notking on the engine

- Bronx, NY, USA

problem #592

May 172019

Sonata

  • 153,957 miles
The contact owns a 2011 Hyundai Sonata. While driving 40 mph, the engine seized. The contact was able to coast the vehicle to the side of the road. The vehicle was not able to restart and had to be towed to an independent mechanic. The mechanic attempted to restart the vehicle, but was unsuccessful. The vehicle was towed back to the contact's home. Hyundai of turnersville (3400 NJ-42, turnersville, NJ 08012, (856) 649-7500) stated that the vehicle exceeded the mileage for the warranty and nothing could be done. The manufacturer was not contacted. The failure mileage was 153,957.

- Sewell, NJ, USA

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