2017 Hyundai Sonata Engine
Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.
Complaint Timeline
Chronological view of owner reports
Without warning my car started consuming oil while still under manufacturer warranty. Hyundai had me do 2 oil consumption tests and they did there so called engine cleaning which they said should fix the problem on 2 different occasions and not even 3 months apart, well the engine was still consuming oil and now the oil is messing up my spark plugs and Hyundai refused to fix it. There is enough evidence out there that shows Hyundai knows their piston rings in the engines were no good for years and still keeps selling these engines without warning the customer. Hyundai refused to honor their warranty on the engine cleaning solution that the dealership is required to use by Hyundai itself. My car's engine went in less than 7 months after they first started doing the oil consumption test on my car and now refuse to fix or replace the engine. When my car's engine went luckily I was on a side street when it went, because if I was on the highway who knows what could have happened. Hyundai omitted in lawsuits outside the country for knowing these were bad piston rings. Which also led to fires in these cars engines. There is a Facebook page with thousands of people having the same issue and Hyundai not even trying to fix the problem, and there our to many to count around the world with the same engines and cars having the same issue so it not just a small isolated event.
Bought a car. In couple days check engine light came on, it was blinking and car was put on limp mode, rpm between 1800-2000, speed 60-62 mph. Went to dealership they did full diagnostics, told that they are going to submit to Hyundai to replace engine at their cost. Hyundai came back that they want to replace knock sensor and then see what’s gonna happen. I replaced and was told that i have to pay even though there is a recall on Knock sensors. They replaced the sensor which was over 600$. And the problem came back in less than 36 hours. Now the vehichle is back again at the dealership and they gonna do diagnostics again. Which is ~200$. I need to help this resolved as i’m only being ripped off with no solution. The vin says it doesn’t have any recalls, but vehichle is experiencing exactly what’s on recall. The vehicle has been in the shops for a month now. Thank you
The contact owns a 2017 Hyundai Sonata. The contact stated that while attempting to start the vehicle, the vehicle failed to start. No warning lights were illuminated. The vehicle was towed to an independent mechanic. The vehicle was diagnosed with starter failure and low engine oil. The vehicle was repaired. The independent mechanic advised the contact to take the vehicle to a dealer for assistance. The contact stated the vehicle was taken to a dealer but was not diagnosed; however, the dealer made the contact aware of similar issues with excessive oil consumption. The contact was informed that he had to pay out of pocket for an oil consumption test. The oil consumption test was not performed, and the vehicle was not repaired. The manufacturer was made aware of the failure, and a case was opened. The failure mileage was approximately 80,000.
My 2017 Hyundai Sonata is using oil at a ridiculous rate. The rapid oil consumption has caused me to be left stranded twice & I had to have it towed to a mechanic both times. I’m having to take it every 2 weeks to be checked by a mechanic & it’s low everytime I take it to him. He’s had to replace all the spark plugs 2 different times since October of 2023, which is very costly for me. I’m a single, working mother of 4 children. 2 of which are in college. So I definitely can’t afford all the towing & repair fees. I purchased an extended warranty, which covers the engine, when I bought the car. My mechanic has reached out to them to tell them his findings & recommendation. The warranty company thinks it is normal for the car to use a quart of oil every 2 weeks. I need help asap as my warranty will expire in 8,000 more miles. Please help me resolve this issue so I’m not left stranded again. Sincerely, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
I purchased my 2017 Hyundai Sonata brand new. At only 37,000 miles, it literally ran out of oil without any prior warning on [XXX], stranding me on the side of the road. The Hyundai dealership has required two oil consumption tests and a combustion chamber cleaning, but the problem continues. This excessive oil consumption issue is well known and well documented by thousands of other Hyundai owners whose vehicles have a Theta II 2.4L engine. Hyundai requires the engine to completely fail before it qualifies for an engine replacement. A friend of mine's Hyundai Sonata caught on fire due to this very same issue while going over the Sunshine Skyway Bridge in St. Petersburg, FL in June 2023. If that isn't a safety issue, I don't know what else is. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2017 Hyundai Sonata. The contact stated while driving at an undisclosed speed, the vehicle suddenly lost motive power with the check engine warning light illuminated. The vehicle was taken back to the residence. The vehicle was not diagnosed or repaired by an independent mechanic or local dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 104,000.
WHEN I DRIVING MY CAR DROPPED 20 MPH DURING ENGINE RUNNING. HYUNDAI CAR CARE CENTER REPAIRED WITH $4825.35. AFTER 10 DAYS AFTER I PICKED MY CAR, I HAD SAME PROBLEM. I ALSO PAID $1864.67 TO TAKE CARE OF CAR PROBLEM. I THINK THIS PROBLEM HAS TO TAKE CARE OF RECALL. I REQUESTED HYUNDAI RECALL CAMPAIGN CENTER BUT NO ANSWER. I NEED YOUR HELP. HYUNDAI CASE NO IS [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
My car has been burning excessive amounts of oil for the past 6 months now. It is so bad there is excessive carbin built up in the piston rings that caused my engine to missfire 2 times in less than six months. Today 5-7-2024 to my car back to the dealer for that problem and they told me I need a new engine but unfortunately it was not coverd by the engine extended warranty. Please help me resolve this issue because I cannot afford a new engine or a car.
Engine oil is consumption. I went to dealer they send the the request to the Hyundai that my engine oil is consuming. The Hyundai reject to replace the new engine for the following resons. 1. I am not the original owner 2. the car has 129k miles
Have problem with high oil consumption which caused carbon deposits to burn valves. I was driving on the highway when engine light came on the car lost power and stalled on the road. At highway speeds that could have caused a collision with traffic. The car was bought at a dealer with 35000 miles on it when I started to notice a slight problem. The car now has 88500 miles on it and has gotten worse. The dealer said it needs a new engine which Hyundai has denied. The dealer said too many mile’s between oil changes but all maintenance has been done when needed at the dealer and Big-O. I have noticed online many complaints with the same problem. I contacted Hyundai have case #23502874 Cost to repair $9743.94 at dealer
While driving on the highway the car stopped .. it was towed to Hyundai as it is still under warranty and ultimately we were told it suffered "catastrophic engine failure" I was also told that a new engine would not be covered. When I asked why I was instructed to give maintenance records which I did. It was denied BEFORE they asked for records. I have been going back and forth with Hyundai and the reason they have given me is an exact effect of their ongoing issues with the THETA II- GDI engine. I have compiled so much research regarding the defect and Hyundai stopped responding to me when I asked them the difference between my car's engine and those that Hyundai knowing delayed recalling and the thousands of same engines that have determined as defective. This has been going on for months and I am not going to let it go and there is a growing petition for another investigation to be opened. Hyundai deliberately delayed recalling a known defect that has affected thousands of vehicles and it is shameful they are playing games. I have an enormous file of data that would indicate the 2017 Sonata Theta II is just as defective as all the others and that their own mechanics have gone on the record admitting that an oil blockage from metal shavings will ultimately cause a catastrophic failure. I have emails from Hyundai and Texts from dealer on cost. I am checking with my attorney to see if they can be shared.
My husband was driving the car on I95 yesterday, no lights on on the dashboard. Suddenly, the engine stalled and he had to pull out before it completely stopped. He could not get the car to start again. The only light on at that moment was a light indicating the key was not inside the car. He went home with a friend to get the other key, but it didn't started as well. The car spent the night at a shoulder on I95. This morning, he called an independent service center and after checking the car, they said the engine stalled because it run out of oil. There was no apparent leak and no lights indicating a problem with the engine oil. It was changed 2,000 miles ago only. The mechanic also mentioned that Hyundai had similar problems with other cars and that we should call them for that. Since there is no recall for the car, they wouldn't help at the dealer, unless we scheduled a service, which is available for April 21 only.
The contact owns a 2017 Hyundai Sonata. The contact stated while driving approximately 65 MPH, the vehicle suddenly stalled. There was no warning light illuminated. The vehicle was able to be restarted and was taken to an independent mechanic and the local dealer, where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and confirmed that the vehicle was not included in a recall campaign. The failure mileage was unknown. The VIN was not available.
My car was eating up oil and there was no leak in it. Then the vehicle stopped working. I kept up the maintenance for the vehicle and when I reached out to Hyundai they told me to take it to my local dealership to get fixed and they stated that they could not fix it, but according to the class action suite I was suppose to get it fixed
Motor burning oil with no leaks causing it to need replaced, with out any reasoning.
The engine was the part which failed. While driving the engine stalled and would not go forward. A foul smell was coming from the engine and the engine was rattling. The floor was wet on the passenger side interior. We let it cool down and took it to the dealer. They did not offer any explanation concerning why the car was not operating poorly or why the car smelled bad or why it stalled frequently and lost full power. Steve Taylor Hyundai service department quote "we don't know what's wrong with your car". It had 78383 miles on it. Taylor Hyundai said we can trade it in but you will have negative equity on your new loan. We were not credited for our trade in but we lost 4 or 5 thousand dollars on the trade-in. They did not cover the car with the warranty and did not repair it. The paperwork on the sale is quite confusing and does not make sense, but we know we lost money on the purchase of another car, and they did not honor the warranty. HELP
The car started to stall and engine lights were flashing in the middle of interstate and it wouldn’t go above 60mph almost was about to get hit from the back
A couple of weeks ago my car seemed to be skipping when I started driving. I had no idea what could be wrong but some kind of intuition made me think to check the oil. I had the oil changed in December 2023 but had only driven about 1000 miles since then. I'm working from home so not driving alot. My oil was VERY low - it didn't even measure up to the first fill line. I started reading info online and realized that many Hyundai Sonata owners were reporting similar issues, so I went to an auto store bought a quart of oil and put that in. After testing, I got another quart of oil and put that in, finally bringing oil level to amount recommended by the lines on the oil stick. A couple days later I took my car to the local dealer, Tuscaloosa Hyundai. As soon as I started describing the problem, they immediately knew what was wrong - another sign that this problem is way too common. They performed some type of combustion chamber cleaning with oil and filter change and charged me $672. I drive a 2017 Hyundai Sonata Sport. When changing oil in December 2023, car had 60780 miles on it. The oil change personnel did say that the car seemed to be using too much oil, which may be why I thought to check it when the car was acting weird. When I took it to the dealer in April 2024, the car had 61816 miles on it. If I had not checked the oil, my engine could have been destroyed and I could have been left stranded on the side of the road. With so many other Hyundai owners claiming the same problem, I can't understand why this vehicle wasn't recalled so that the problem could be fixed, and/or that this problem which could have serious consequences wasn't covered by Hyundai. I am [XXX], don't drive far from home and drive very carefully. There should be no reason a car with 60000 miles on it is consuming oil at this rate. No warning lights were on in my car to indicate that I had an issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Excessive or consumption. Purchase a car three weeks later car started misfiring I was able to get the car to a mechanic shop. I was told that the car needed a tuneup, spark plugs and ignition call was changed mechanic noticed oil on top of the engine and advise me to get an engine gasket. Gasket was replaced 2 weeks later oil light comes on I added 5 quart of oil the light goes off I notified the mechanic again was able to get the car in the shop took mechanic replaced the gasket week later oil light was flickering took the car to have oil change. There was no oil in the car, three weeks later oil light flickering again checked oil it was empty I added five more quarts to the car and took the car back to the back the mechanic one he inspected it he informed me that the engine in the car for some reason consume a lot oil and that I should take the car to Hyundai dealership. I checked Hyundai recall for the oil consumption issue the car model I have is not apart of the recall. I could have lost my life when the car stalled due to oil is leaking where the spark plugs are located. Hyundai need to recall all 2013-2017 Hyundai sonata and Elentra
5-6 quarts of oil consumption between oil changes. Rattle noise with torque on engine or acceleration.
I have a 2017 Hyundai Sonata sport . I make payments on this vehicle. I have only had this vehicle since [XXX] it just hit 100,000 miles. I was on my way to work and the check engine light came on.. I heard a ticking and knocking sound. Then the car shut off. A few mechanics have looked at the car.. I was told about the defects from shaving not being properly cleaned out.. This has never happened before and this is my only transportation. It’s currently at the Hyundai dealership here in Fredericksburg Virginia. But they of course are telling me it will take up 4 to 6 weeks before even doing an engine inspection on the vehicle and they can’t provide me with a rental. It’s obvious that this is an engine malfunction. I would like to be treated fair in this situation and simply have the engine replaced along with any other vehicle updates or at least another vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
The contact owns a 2017 Hyundai Sonata. The contact stated that within a two week period she has add to add 2 quartz of oil in the engine though she has yet to observe an oil leak. The check engine warning light was illuminated. The vehicle has was not taken to a dealer in independent mechanic. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 161,000.
To whom it may concern, I would like to inform you that I have been experiencing engine power loss and oil evaporation from my Sonata. In fact, I took the vehicle for an oil change in April 26, 2024 and by August 1, 2024, my car was not accelarating and the dashboard was completely illuminated with the engine, air bags and suspension lights. Upon inspection of engine oil dipstick, I was made aware that my oil was missing (evaporated) without any visual undercarriage drips. Therefore, I added 4 qts of synthetic oil to my car recently replaced oil and the car continued without power. Upon connecting a vehicle code reader, it was reported that a spark plug was malfunctioning and I continue with its replacement. To date the vehicle continues to have engine loss of power episodes. Can someone please help as I do not want to die in this vehicle due to a manufacturer's unannounced/undisclosed engine issue. Thank you for your time and consideration.
While driving on the highway the car began shaking, the check engine light came on. After guiding the car to the shoulder, we turned the car off and back on after a few minutes. The engine was completely stalled when we turned the car back on - multiple dash lights were on (check engine, oil, and battery were the ones I remember); the car would not accelerate, when we attempted to drive slowly the car, in drive, started rolling backwards/downhill and would not accelerate at all; and the engine was still idling shakily. Car was towed to a mechanic who diagnosed an engine misfire requiring engine replacement. Hyundai dealership denied this as a warrantable issue under Extended Warranty TXXI/TXXC/Service Campaign T3G. This vehicle is a well-kept 2017 with only 90k miles and should not have had this type of engine failure except as a result of poor manufacture.
My daughter wrote you earlier this week about the severe oil oil usage of her 2017 Hyundai Sonata. I am writing a follow up because I co-signed for her vehicle when she and her children were deserted by her husband. Since my name is listed first on her vehicle title and bank loan I have a special interest in the problems she is experiencing with her Sonata. She indicated in her filing with your department that she has had her local Hyundai dealership change her oil every four to five thousand miles which is true. The last time the oil was changed by the dealership was around [XXX]. When she spoke to the service department last week she was informed that since the VIN was not listed as being part of a recall there was nothing they could do for her. Yet this past week I put four additional quarts of oil in the engine. She and her children live with her mother and me. I can attest to the fact that there is no smoke from the exhaust when the vehicle is idling which would indicate bad valve guides. Nor is there smoke from the exhaust when the car is being driven on the road which would be caused by bad oil rings on the pistons. There is no oil being dripped on our driveway or garage floor which would indicate gasket or seals leaking, but the car is consuming oil at an alarming rate and we need your assistance with this issue. Thank you for your time. [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
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The 2017 Hyundai Sonata has 264 Engine complaints on file. 2 crashes have been reported. Review the timeline above for detailed owner experiences.