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 / 84
Injuries / Deaths:
15 / 0
Average Mileage:
71,351 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.
The contact owned a 2011 Hyundai Sonata. The contact initially stated that while driving at various speeds, an abnormal, knocking noise would emit from the engine. The contact had taken the vehicle to the dealer where a knock sensor test was performed and the contact had the engine replaced under warranty. A few months later while driving at night at 35 MPH, smoke(color unknown) began to emit from the vehicle without warning as he noticed his feet getting warm. The contact then saw flames emit from the vehicle and immediately pulled over. The fire department was called to the scene and extinguished the fire(fire report unknown). Police also arrived at the scene and a police report was filed. No injuries were reported at the scene. The vehicle was totaled and towed to an independent body shop. The manufacturer was notified of the failure and offered the option of a settlement; a settlement had yet to be made. The failure mileage was approximately 175,000. The failure mileage on the new engine was approximately 10,000.
The car cut off with no warning signs. No letter was send to me from the dvm stating that I had a recall and my car just cut off on me and the dealership telling me I have to come out of pocket to pay for engine that I no knowlege about at all of the software update
I was driving my 2011 Hyundai Sonata home from work when without warning my car started making a rattling noise and slowing down. I was able to get out of traffic and luckily maneuver my car into the parking lot of a mechanic before it completely shut down. I tried multiple times to restart it and it would not turn over. I started checking things under the hood and when checking my oil noticed it was completely empty. Where did all my oil go? After being inspected by the mechanic he notified me that my engine had seized up and that it is a known issue with this year and model. I then had it towed to the dealership where it is still sitting to be looked at. It-??s been a week of me being out of work due to not having a vehicle. When I asked about the known issue they stated that my VIN number is not listed as part of those affected. There were literally no warning lights until that morning when the engine light and oil light came on while I was coasting into the parking lot of the mechanic. If it would have been a busier part of the day I could have been in a serious accident. I am still without a vehicle waiting on the dealership to look at my car.
The contact owns a 2011 Hyundai Sonata. The contact stated while driving 65 MPH, the vehicle stalled, almost causing a collision. The vehicle was towed to the dealer and diagnosed with engine failure from a damaged connecting rod and metal shavings in the engine. The dealer informed the contact that the engine needed to be replaced. The vehicle was not repaired and remained at the dealer. The manufacturer was made aware of the failure and a case was opened. The manufacturer denied the engine replacement because the vehicle had a salvage title. The manufacturer informed the contact that the vehicle was previously repaired under Manufacturer Recall Number: 132 (GDI Engine Inspection/Replacement). The failure mileage was approximately 163,000.
The contact owns a 2011 Hyundai Sonata. The contact stated that the vehicle experienced excessive oil consumption. There were no warning lights illuminated. The vehicle was taken to the local dealer where it was diagnosed with carbon build-up in the chamber. The vehicle was repaired but the failure recurred. Additionally, there were two oil consumption tests performed. The contact was informed about a complete engine tear down. The manufacturer was notified of the failure and referred the contact to NHTSA for assistance. The approximate failure mileage was 125,595.
- Mt. Holly, NC, USA
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While driving the car and accelerating the car literally stalled going down the street. I came to a complete stop it had died. No power or anything. I thought it was the starter but it wasn-??t brand new starter. Come to find out the engine stalled. Lifted the hood nothing but burnt smelled and smoke. I-??ve been catching [XXX] with this car. Helpppp me! It-??s toooo many of us to be going through the same [XXX] thing and no ANSWERS! INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
As I was driving the vehicle, I had just exited off of the highway and onto a ramp and as I tried to accelerate the speed back to the speed limit my vehicle made a knocking sound and stalled at about 40mph. It would not speed up and as I kept driving to attempt to get home we could hear different sounds coming from the engine. I made it home as the vehicle seemed to be ready to complete shut off but didn't. I took it into Hyundai and they said it could be the turbo, but were unsure. They state there are no recalls on the vehicle, but it seems that this is a common issue for others with the same vehicle. The engine is not good and I cannot drive my vehicle safely.
The contact owns a 2011 Hyundai Sonata. The contact stated that while driving at 45 MPH, the vehicle shut off without warning. Due to the failure, the contact had the vehicle towed to the dealer where they diagnosed the vehicle with engine failure due to a defective rod bearing. The manufacturer was notified of the failure and informed him that his vehicle was not included in NHTSA Campaign Number: 15V568000 (Engine). The vehicle had yet to be repaired and remained in possession of the dealer. The failure mileage was 89,060.
I was driving my car regularly one day and out of nowhere my car just shut off. When I started it back up I heard a knocking noise and it got louder as I went faster. So I pulled over and checked to see where the sound was coming from and it came from the engine. So when I started the car back up, on the way home the car was hesitating to move right and kept jerking. I also noticed the engine light and engine oil light came one so I went to go check it out. When I did the shop said the engine is blown and that there are recalls on my type of car. When I searched to see if there was I found out my car had none. But the exact same thing that happens to those cars happened to mine.
2011 Hyundai Sonata. Consumer writes in regards to engine stalling. The consumer stated within a 3 month period the vehicle had a rapping noise coming from the engine and stalling. It was taken to the dealer. On another occasion, the vehicle stalled over 12 times in a 2 mile trip. The vehicle had to be pushed to a repair shop. The consumer inquired about any recalls.
2011 Hyundai Sonata. Consumer writes in regards to NHTSA safety recall 15V-568. The consumer requested to be included in the recall, as the vehicle has experienced the same failure. There was metallic debris in the engine crankshaft. This caused the rod bearings to be restricted of oil flow and caused my rod bearings to be damaged. The engine failed.
While driving, the engine suddenly stalled, causing my vehicle to roll to a stop in moving traffic. This put myself at risk, along with other drivers. There was no prior warning.
I was driving my car on the highway and it suddenly shuddered while I was going 70+mph and the engine light came on and kept flashing. I had to pull off to the side of the road and call for service. I took my car to my local mechanic who told me it was a knock sensor issue and it had to go to the dealership for repair. I then had it towed to the dealership where they told me my motor needed to be replaced. The dealership had my car for almost 3 months to replace the motor. The next day after I picked up my car from the dealership for the engine replacement my battery quit, my headlights quit and my passenger side window motor quit. These were all working fine before the engine went out. Then on the Monday after my check engine light came on. I took it back to the dealer and they told me it was an EVAP sensor that needed to be replaced but wast part of the engine replacement so I had to pay for it to be repaired. They had my car for another week and replaced the sensor. One week exactly after getting it back for the 2nd time my check engine light came on again. The dealership told me it was the EVAP sensor again but they had to call technical support to get a plan to fix it. They told me it was perfectly fine to drive while they are waiting to hear what to do from technical support. The car is now parked in my driveway because I can not physically put gas in it and the one time I was able to put gas in it, I drove approx 120 miles on a full tank of gas and my low fuel light came on and it shows little to no gas on the gas gauge. I am afraid to drive it because I am afraid it will catch on fire or I will mess up the fuel injectors or worse.
My daughter and a passenger were driving our car at night October 3, 2021and the entire car suddenly and without notice began shaking and convulsing, became non responsive and all the electrical components and the engine went dead including inside lights, brakes, power steering and lighting system. It was nighttime and the traffic was medium but she was able to ease the vehicle onto the shoulder without incident but had a few close calls as drivers eased around her. They could have been severely injured by the traffic as it attempted to get past her on this narrow two lane road. The vehicle was towed to a mechanic who diagnosed that the engine had blown, was seized and locked up. He also mentioned that there is a recall for the 2011 Sonata and numerous problems such as this have been reported. We had no idea there was a recall on this vehicle. We are very concerned and upset that this incident could have caused severe injury to our daughter, her friend and other drivers around her. There were no prior notifications or signals with the car having any problems prior to this incident.
My daughter was headed to work this morning. She said that the car started making a noise and it got worse on the interstate. The warning lights came on and the acceleration was lost. Thank God she was able to pull off the interstate without getting hit. The car stalled and wouldn-??t move. I called Geico to get the car towed. The mechanic said that the car shook when he started it. He inspected the car and said that it-??s a rod in the engine. My daughter could have been seriously hurt. I didn-??t realize that this was a recall
My car stopped working it-??s been done for about 6 months it just sitting in my driveway it won-??t turn on I haven-??t had a car in about 6 months because my car won-??t turn
My engine keeps making a knocking sound. When I am driving it will reduce speed, and begins to idle while already driving. Which concerns me that these same issues occurred on my same year, make and model on my vehicle and some how Hyundai dealership will tell me that my car does not have a recall. 470,000 cars of the same year make, and model went in for exactly what my car is doing.
The contact owns a 2011 Hyundai Sonata. The contact stated that while his wife was driving 50 MPH, the vehicle lost motive power without warning. The vehicle was towed to two different independent mechanics on two separate occasions, and the mechanics informed the contact that there were recalls associated with the failure. Upon researching, the contact saw that there were five recalls associated with the VIN; NHTSA Campaign Number: 17V152000 (Seat Belts), 15V568000 (Engine), 18V137000 (Seat Belts, Air Bags), 15V759000 (Exterior Lighting), and 16V190000 (Steering). The vehicle was then towed to the dealer, but the dealer informed the contact that they would not perform the recall repairs since the vehicle was supposed to have the recall repairs performed in 2018 when the recall notifications were mailed. The contact stated that he purchased the vehicle three years ago and never received the recall notifications. The vehicle was not repaired and remained at the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 140,000.
A D V E R T I S E M E N T S
- West Islip, NY, USA