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2018 Hyundai Sonata engine complaints

Page 6 of 9: complaints 131 to 160 of 224, newest first, as owners wrote them.

See the summary of 2018 Hyundai Sonata engine problems: which part fails, at what mileage and related recalls.

Filed Oct 30, 2023 · Engine · NJ

I was driving and when I made a left turn I heard a sucking type of noise coming from the engine. I immediately made an appointment at my local Hyundai dealership, however they were booked for another month so I made it at my local mechanic shop. After inspection by the mechanic I was told and confirmed that the noise was a result of having barely ANY OIL LEFT IN MY ENGINE!!! Because the oil pan had a hairline crack in it and had leaked the oil out. My check engine light had never come on through this process. This is so dangerous because my engine could have eventually seized while being in traffic with potential harm to both myself, people in my car and other vehicle traffic!!! Also, WHO KNOWS HOW MUCH DAMAGE WAS DONE TO MY ENGINE AS A RESULT OF THIS!!! My engine can be ruined!!!

Filed Sep 20, 2023 · Engine · 77,347 miles · NY

The contact owns a 2018 Hyundai Sonata. The contact stated while driving 65 MPH uphill, the vehicle shuddered. The check engine warning light and low oil pressure warning light were illuminated. The contact was able to pull to the side of the road and turned off the vehicle. The vehicle was towed to an independent mechanic, where an oil change was performed, and the spark plugs were replaced. The vehicle was repaired. The contact related the failure to the federal safety agency Action Number: DP22003 (Engine). The dealer was notified of the failure. The manufacturer was not notified of the failure. The failure mileage was approximately 77,347.

Filed Sep 15, 2023 · Engine, Transmission · PA

My car is misfiring, hesitating accelerating, severely shaking and vibrating which you can feel in the pedals and steering wheel, and the check engine light is on. This issue has been ongoing for over a week already. When the engine light first came on on 9/7, i pulled over on the side of the road and had a mobile mechanic check it out. The code was coming up as a bad ignition coil in cylinder 1. When he took out the coil and spark plugs, he saw scoring on the spark plug from oil as well as oil being consumed in the cylinder itself which has been causing my vehicle to misfire. The mobile mechanic stated on his invoice that I need a new engine. I took my car to Faulkner Hyundai on 9/11 and they said the best they can do is an oil consumption test even though they personally know I need an engine as well. I have not been able to drive the vehicle due to the ongoing issues, I am afraid for my life and safety that god forbid the car stalls out on the highway while I am traveling to or from work I could get into a major accident. They are putting my life in jeopardy.

Filed Sep 11, 2023 · Engine · 59,000 miles · NC

The contact owns a 2018 Hyundai Sonata. The contact stated while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic, who retrieved DTC Code: P1326 and related the failure to Technical Service Bulletin: 20-01-024H-1 (Theta GDI Engine DTC P1326 - Engine Inspection / Replacement); however, the vehicle was not covered under the TSB. The vehicle was not repaired. The manufacturer was made aware of the failure but informed the contact that there was no recall associated with the VIN. The failure mileage was approximately 59,000.

Filed Aug 23, 2023 · Engine · MN

Oil leaking, replaced gaskets Oil continues to burn at a fast rate. Putting up to 6qt oil extra every month. Oil changes have been regular. Dealership only cleaned engine and told me that was all they could do.

Filed Aug 20, 2023 · Engine · VA

While I was driving the car shut off by itself.

Filed Aug 4, 2023 · Engine, Fuel system · 127,961 miles · GA

Car consumes TOO much oil. Even after I get an oil change I have to add more oil weeks later and the oil is always black. Several times the sensor has gone out on me on the hwy and I’m not able to accelerate or go over 35 miles which is extremely dangerous .

Filed Aug 2, 2023 · Engine · IL

This vehicle consumes one quart of oil every 1000 miles. I have documentation to prove it. Hyundai has done their own asessments and claimed that it consumes less. There was a class action lawsuit filed in California for this issue.

Filed Jul 25, 2023 · Engine · NY

My engine was burning oil, I was/ am up to date with my oil changes. The oil suddenly kept being dirty. My car broke down twice. One time oil was shooting out of the top of my engine and it was smoking. Hyundai claimed it was neglect and only accepted my paper copy of oil changes but not the ones on my debit card statement.

Filed Jul 10, 2023 · Engine · TN · fire

I first reported issues with my vehicle to a local Hyundai dealer January 16, 2023. I was advised I couldn’t get an appointment until March 8, 2023. Since March 8, 2023 I have taken my car to the dealer my numerous times for a series of testing over the course of 3 months. I was advised my car was burning too much oil of oil per 1000 miles. I was also advised that the transvalve and engine needed to be inspected by an adjuster to determine a faulty engine in order to get approval from the manufacturer. My car was at the dealer for almost a week. On June 15, 2023 the Hyundai dealership advised the engine was faulty. I was also advised warranty approved for a new engine due to faulty engine/oil consumption. I was advised to pick up my vehicle from the dealership. On June 16, 2023 I picked up my vehicle. I was told by the dealership to keep driving my vehicle until the new engine came in due. I was denied a loaner/rental at the time even though they knew the car had a faulty engine. Immediately after leaving the dealership dealership my car started smoking. I pulled over immediately got out. The car caught on fire and burst into flames. This was a very dangerous safety risk. It caused panic attacks, anxiety, headaches, and lots of sleepless nights. If I hadn’t gotten out sooner I could’ve been severely injured or dead. The car is with the insurance company. A field investigation has been done by the insurance. They determined faulty engine and total loss if the vehicle. It is still available for inspection if needed. There were no warning lamps or messages before the car started smoking or caught fire.

Filed Jul 4, 2023 · Acceleration, Electrical · TX

My 2018 sonata has been stalling out while I’m driving more so when I accelerate.I have a baby that I’m scared to drive with in the car because it does it randomly. It has been happening more & more everyday. I got new parts/starter etc. No codes on dash. Have an appointment next week with Hyundai to take a look.

Filed Jun 16, 2023 · Engine · GA

Oil consumption problem 2018 Hyundai Sonata

Filed Jun 7, 2023 · Engine · WA

After only 38,000 miles, the engine seized up and failed to start. Has been a the dealership where I purchased it for 2 months and has yet to be looked at

Filed May 30, 2023 · Engine · OH

When driving the car on the highway - "check engine - hybrid system" warning lights come on and indicate hybrid system issue and to shut car off immediately. Extreme safety issue as the car goes from highway speeds to 35MPH almost instantly. This has happened seven times now and Hyundai keeps indicating that technicians are following engineering guidance in fixing the issue related to the knock sensor. The seventh occurrence happened on May 23rd of 2023. First one was in December 2021. As Hyundai is unable to correctly fix the issue I have repeatedly asked for them to replace the car since it is an extreme safety issue but they will not do so. Still waiting for diagnosis of the latest occurrence from May 23rd. Hyundai does not acknowledge that this issue is of safety concern and just indicates that the issue has been fixed each time it occurs.

Filed May 15, 2023 · Engine · 33,000 miles · TN

The contact owns a 2018 Hyundai Sonata. The contact stated that while driving approximately 30 MPH, the vehicle lost motive power and stalled in traffic. The vehicle was misfiring, and the RPM was abnormally elevated. While driving 40 MPH, the vehicle stalled again. There were no warning lights illuminated. Additionally, the vehicle was consuming an excessive amount of engine oil. The contact was adding approximately two quarts of engine oil every two weeks. The vehicle was taken to the local dealer but was not diagnosed. The vehicle was taken to another local dealer, Twin City Hyundai (3024 Alcoa Hwy, Alcoa, TN 37701, (866) 229-3953) but was not diagnosed or repaired. The manufacturer was not yet contacted. The failure mileage was approximately 33,000.

Filed Apr 27, 2023 · Engine · OH

In January, At 65k miles I took my car in for an oil change. I informed them I was putting a quart of oil every month for the last 3 months just to keep the oil light off on my dash. Tech told me all Hyundais are burning oil and to just drive it until the engine blows and I’ll get a free engine replacement through Hyundai. The following month in February, I went to get my back brakes done. Mechanic told me I had no oil left in my car. They filled it up for me. In March, I took my car back to the dealership service center and demanded service. I was told I needed to do a combustion cleaning which would cost $700 and my extended warranty would not cover it because it’s considered general maintenance. I threw a fit and they agreed to do an oil consumption test. A few days ago I hit the 1k miles I was supposed to drive and took my car in for the first check. It was almost 2 quarts low and they said the next step in Hyundais flow chart is the combustion cleaning. They told me 1. It doesn’t actually clean anything and 2. Hyundai says this is the fix to the issue but it doesn’t actually fix anything. They said after, we would do another oil consumption test and then we could submit to Hyundai under “good faith” and ask for an engine replacement. I started researching and see this is a major issue with Hyundais and leave people with a blown engine and Hyundai refuses to cover anything. I traded it in today and got a new car, not a Hyundai!

Filed Apr 17, 2023 · Electrical, Engine · NC

Was driving on freeway on the way back from visiting family in different state when rpms dropped off and suddenly lost power. Car began shuddering and check engine light started blinking. Put hazards on and somehow managed to pull over to shoulder. No problems with car or anything to indicate anything was wrong before this. Called to have car towed to dealership where they said there was a software problem and it was falsely indicating low oil levels. ECM was reset and software updated for $233 which they said fixed the problem. Said that carbon deposits may have caused the software to misread and that may have been why there was no indication of problems before. Hope so because i have a long drive back.

Filed Mar 30, 2023 · Electrical, Engine · 111,325 miles · NJ

During the drive, check engine lights on then suddenly, HEV warning lights with turn off the engine with critical alert sound. I was drove again after attempting to start several times then again & again... It freaked me out when I drove on the highway, and yet to fixed & afraid to go to the dealer becase of cost & uncertain reasons. This could be big accidents on the highway.

Filed Mar 18, 2023 · Electrical, Engine · KY

Knocking of the engine , engine light continues flashing , lack of acceleration finally feb of this year the turbo blew up an the car stop running all symptoms of knock sensor problems . I’m Taking it to Hyundai on Dixie on Monday in two days an I hope they don’t deny the federal recall an I will have to have a loaner car . They have told me the last 5 years my title was flawed last month they denied saying that an told me my warranty was voided with 41,000 on my car

Filed Mar 13, 2023 · Engine · KY

The Engine Failed. It is currently sitting at the local Hyundai Dealership. As it pertains to my safety, the Engine failed while traveling on a Major Expressway in the morning on my way to work. Upon towing the vehicle to the dealership, it was effectively confirmed to me I am not the only person suffering from this problem. The vehicle has been inspected by the dealership and determined to be an engine failure. No warning, no other symptoms prior to this incident.

Filed Mar 3, 2023 · Brakes, Engine · TN

As soon as I start to press on my brakes the vehicle starts violently pulsating and locks up. Took the dealership they said my rotors and brakes were fine and we're unable to give any reason for this. Without brakes I cannot stop my vehicle and it seems like a faulty ABS but no light on dashboard. The engine consumes nearly 5.2 qts of oil in 1000 miles. Being this is not normal I have no idea I was running out of oil as soon as I was changing it which could have led to my entire engine stalling out and causing me to wreck. It's putting my life as well as other people's on the roads and danger

Filed Feb 23, 2023 · Engine · OH

Hairline crack in engine oil pan possibly resulting in engine failure

Filed Feb 23, 2023 · Engine · PA

This car engine has failed on multiple occasions. About 12 months ago, I observed a great loss of coolant. The car would frequently overheat even when I added coolant. Eventually, I was able to have the engine replaced at the dealership where I purchased the car, but this was right at the end of the vehicle's warranty. Even with a new engine installed, I still lose coolant all the time. It does not appear to leak anywhere, but the reservoir is consistently empty.

Filed Feb 8, 2023 · Engine · MO

There is a rod barring warranty on my car for my engine. My engine has completely faulted. Hyundai has informed me that they are going to take at least 3 months to fix it and will not give me a vehicle for the time they have mine. I took my car to the shop to check it out, a week before it went out and Hyundai was fighting it, so I wasn’t able to get it there until it completely went out after trying to figure it out for a week prior

Filed Feb 6, 2023 · Electrical, Engine · CA

I was driving on freeway and all dashboard warning started to flicker on and off simultaneously then my steering wheel locked in place. I was unable to stop or turn wheel and had to maneuver car until it came to a stop. I had to get it towed home. I spoke with dealership and asked me to tow it to them so they can look at it and gave me a report that mention nothing about what I originally told them it did while I was driving but pointed out everything else that was wrong with it that added up to more than $4,500.00 in repairs. Dealership guy got upset that I asked him to email rather than phone calls and didn’t want to answer anything through email only phone calls he was refusing service and kept pushing us to approve all the other expenses without telling me anything about why the car did what it did. He then told me that it was my fault since car was just passed over 100,000 miles and I should’ve known that was going to happen. Luckily nobody got hurt during this. My wife was pregnant at the time and thank goodness nothing bad happened and dealership guy was so unprofessional and rude and just wanted our money rather than help by giving us any answers.

Filed Jan 17, 2023 · Engine · KY

I own a 2018 Hyundai Sonata SE. The car now has 60,000 miles on it. I first reported to the Hyundai Dealership that my valves are "chattering" with acceleration up to 35 mph. I was advised my engine was low on oil. I completed a oil change and valves are still chattering. I was advised that the engine is dirty and I would have to pay for an engine cleaning at $350.00 After the cleaning the valves stopped chattering for about 1000 miles then the noise came back. I was then told to complete an oil consumption test. Part 1 of the test my car burned 2 quarts in 1000 miles. Part 2 with a cleaning my car burned .5 quarts after a cleaning, so it passed the oil consumption test. I was told by the dealership that after a couple of oil changes or around 6000 miles the car will burn oil again at the rate of over 1 quart per 1000 miles. The also told me that I would have to do the oil consumption test again. The dealership stated that the engine is faulty and and engine replacement is what needs to happen to correct the problem versus this band aid fix. I was also advised if I wanted to speed up the process don't check the oil between oil changes because it will burn 5 quarts of oil before the next oil change. This will cause the engine to lock up. THE ENGINE IS FAULTY IT NEEDS TO BE RECALLED BEFORE SOMEONE GETS KILLED.

Filed Jan 12, 2023 · Engine · TN

My vehicle is unable to accelerate past 65mph. I had it towed to a local repair shop whom ran a diagnostic and they are advising there is a hyundai/kia recall on engine. To my knowledge, I was not advise by Hyundai of any recall when my spouse reached out to Hyundai directly. I was on the highway with family traveling back from Christmas vacation when the incident occurred. There was a crash ahead due to the rain so traffic had slowed down. Once I drove passed the accident and attempted to accelerate the engine light appeared I could no longer accelerate. Very scary when your on a 4 lane highway hours away from home. I was able to pull off to the nearest exit for safety as it rained.

Filed Dec 5, 2022 · Engine · TX

My car started leaking oil from the oil drain bolt area. I took it to the dealer and they said the oil pan had a defect, they called it a “weld crack”. A quick internet search shows that this is a very widespread issue.

Filed Nov 10, 2022 · Electrical, Engine · KY

Loss of power on highway or during normal driving possibly due to oil pan assembly according to odi 11481745. This has cause near-miss accidents on highway on ramps a number of times. Separate issue, when the outside temp is at our below 30°F the starter can fail to turn over resulting in a car that won't start even with jumper cables applied.

Filed Nov 9, 2022 · Engine · IL

Purchased Certified Used 2018 Hyundai Sonata in March of 2021. Engine oil light came on at 36,863 miles in July of 2021, and I took car to repair shop. I was told that these cars (2018 Hyundai Sonata) excessively burn oil -- though under 60K miles was "early" -- and that it would need to be constantly monitored. Car went through four quarts of oil before next oil change at 42,437 miles. Took car to local Hyundai dealership and was told there was a "crack in my oil pan" (though there were no oil spots in my driveway or garage that would point to an oil leak from a pan). Pan was replaced. Engine oil light came on again (despite problem being "solved") TWO MONTHS LATER AT 44,129 miles. I put a minimum amount of oil into the engine and drove over to dealership to have issue resolved. They told me it was sparkplugs, which they replaced. Checked oil level at each gas fill up. Car went through FIVE quarts of oil before oil change at 47,432 miles!!!! Five quarts in 3,000 miles. Dealership now states I must get approval from Hyundai to do an oil consumption test.

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