2018 HYUNDAI ELANTRA GT Engine Problems

Car was being driven home when car started shaking heavily and check engine light started flashing. Car had been needing 1qt of oil every 600-800 miles, depending on drive (highway would go longer). Pulled off to the side and plugged in code reader - found that cylinder 3 misfired and catalyst system below threshold. Was able to get the car home. Towed it to Hyundai dealership the following week once they were available and they found a bad cylinder head and leaking cylinder. Assumption is the amount of oil it was using ended up backing up carbon buildup. Car has less than 100,000 miles on it and even with maintenance it needs a new engine.

Engine is burning excessive amounts of oil regularly.

In mid-2024, the vehicle experienced a flashing check engine light. I brought it to Murfreesboro Hyundai (TN), where they confirmed the oil was low and started an oil consumption test. A bearing clearance test (BCT) was also performed and passed. After back-and-forth over several weeks, I was told the oil consumption was within spec, but the dealership stated Hyundai would cover all necessary repairs, including a combustion chamber cleaning, under warranty. I was told this work was completed and the vehicle was returned to me. In July 2025, the exact same flashing CEL returned. I brought the car back to the same dealership, where they again found the oil was 2.5 quarts low. However, this time they claimed no previous combustion cleaning or repairs had been done, and that I would now need to pay over $1,100 out of pocket for the same cleaning that was supposedly already performed — and which they had told me would be covered under warranty. This indicates that the dealership misrepresented completed service work, failed to address a recurring defect, and is now trying to shift the financial burden to me. Hyundai’s claim that oil consumption is not “high enough” to warrant coverage is concerning, especially when the condition continues to damage the engine and cause driveability issues. This appears to be part of a broader known defect affecting Hyundai 2.0L engines. I am requesting that NHTSA investigate Hyundai’s handling of oil consumption, engine misfire, and warranty practices related to the 2018 Elantra GT and similar models.

It uses a lot of oil with no visible leak or reason. I put new oil in all the time. All the time! For two years since buying it used. Warning light does not come on till it's out. Car is hot, of course, and stops running in the middle of the road. I see there is a recall on some elantras for oil piston seals but not this car. Seems it should be.

The engine burns oil quickly which could lead to the engine blowing. I have to get more oil changes than average to the engine burning oil.

Mileage: 106,112

The engine is consuming excessive oil. The car has about 72k miles on it and I’ve owned it for almost 4 years. I called corporate Hyundai to tell them what’s going on after having multiple recalls fixed at the dealership, I was allowed to drive off the lot with no oil in my vehicle. Upon getting an appointment for the engine issue via corporate Hyundai, I was told to they would have to keep my car but have no loaner vehicles for me because they’re all out of commission for engine issues. I shortly received a call from them saying the engine isn’t covered under warranty and that they have to do a $942 cleaning and then if that doesn’t work, I need a new engine and Hyundai will do nothing to help me with this because I am not the first owner. I bought the car from a Hyundai dealership.

My vehicle has 55,000 miles, and the engine completely stalled while I was driving to the dealership to get it looked at. I had my oil change done 01/04/2024, and barely drove it since I dropped it off 01/11/2024. After weeks of waiting on any update, I was finally contacted that today, 01/26/2024, my car had no oil and this is why my engine failed. I have video evidence of the oil change, and the dealership is trying to place blame on the mechanic that has done the oil change. Upon further research, I am made aware of the class action lawsuit in CA, alleged that excess oil consumption is to blame for faulty engines.

Engine, power train, malfunction changing my speed control. No warning lights, first ticking noise from engine then knocking loud noise from engine. Noticed ticking about 4 days ago at first, today on freeway going 60-70 mph just changed to loud knocking, immediately engine warning starts to flash on dash board then speed just drops from 60-70 mph to 35 mph almost got hit by trucker and another car . Under 90 day warranty still from dealership (27 days since purchased) no license plate yet but insured and registered. Read many complaints of the same problems from numerous of people having the exact same problem. Very dangerous when vehicle stops accelerating on a steep pass on hwy with heavy traffic, this was almost an accident report to dispatch but luckily I reacted fast enough to swerve to the side before hitting the vehicle behind me and missing 18 wheeler trying to get to the right shoulder because theirs no space on left just concrete dividers! To close for comfort I can imagine what really can happen to someone that can't react as quickly as I did. Feeling like a victim their is no way they were not aware of this problem that has happened to many others when it is coming from a Chrysler dealership after reading so many complaints and reviews. I wish I would of known before hand ✋️ I would of not even bothered but now this is what I'm dealing with instead of feeling safe and comfortable being in a reliable, gas efficient vehicle that I just purchased for $30,000 and my jeep as a down payment not happy with dealership nor product. Who do I look to, when insurance or dealership can't protect me from situations like this it's not fair to someone that's struggling day by day paycheck to paycheck and this happens and now on waiting list until December so dealership is able to take a look at it. This should be most definitely brought to attention!!!

I have noticed over the last year or so that the engine was burning oil. This was indicated by Express Oil Change multiple times during oil changes, including today. The oil level today didn't even register on the dipstick, so it seems this is getting worse. I can get oil change records on request from the above company.

My 2018 ELANTRAGT was stolen due to Hundaes ineptitude and refusal to put in proper safety features. My car has been recovered but Hyundai does not have enough parts to supply this current crisis so my car will be in the shop for a minimum six weeks prior to being sent back to Hyundai dealership for the software upgrade that they are using as a fix. I don’t think this is enough on behalf of Hyundai. My car has lost resale value between 20 and 40%. I believe Hyundai needs to make proper compensation to me as a consumer. Additionally, my car was stolen in Oakland California at night and I. Stranded due to excessive call volume and had to go to downtown Oakland to one police plaza at night as a 60 year old widow with bad feet. I would like to see some support coming from your department as Hundaes position seems to be to make this a consumer issue that we are all financially responsible for.

Engine rod bearing failure cause engine broke if You have any information please give me and hyundai have a recall for knock sensor they cause a premature engine failure cause Fire in most of the case

We were driving the car and all of a sudden it would only go 30 mph and starting making a noise, pulled over and car would not go anymore. I took to a shop authorized from my carmax care program and it was diagnosed as rod bearings broken in the engine. This is a know issue with this model and Hyundia extended the warranty due to know issue. We were then advised to take to a dealer since a warranty issue, when it got there and they looked at it and the repair shop called them to tell them they broke it down to failure the dealer is now trying to charge me 8 hrs labor to look at. This is not a my issue , its a manufacture issue so I should not have to pay all this money to have same diagnostic I reported to Hyuandi headquarters and also reported the shop. Someone needs to fix this issue my case # with Hyundai is 20400619

On July 11, 2022 I was driving home when the MIL warning started flashing on my dashboard, and then my car began to stall. I was able to drive the car home and then have it towed to a local shop, who said that my oil was nearly gone and refilled it. The shop recommended that I take my car to the Hyundai dealership to have it checked out as it should have had at least 200 more miles before it needed an oil change. This is supported by my Hyundai dealership's sticker stating that my next oil change was due August 15 or at 52350 miles. As of today, July 23, my car has 52,209 miles on it. On Monday, July 18 I dropped off my car at the Killeen Servicemax center and asked them to run a diagnostic check and they couldn't find anything wrong with the car. My service advisor never spoke to me in person about my concerns and wouldn't answer my calls or text messages. My concern is that my car is burning far more oil than it should, and makes me want to check the oil level every month. I did recently renew my safety sticker for my registration and the car passed. I did research online and saw that there are pending lawsuits in California for 2018 hyundais' excessive oil consumption. I don't feel safe driving my car anymore. Thank you.

Engine seized and turned off unexpectedly and would not restart for hours. When it did start up a few seconds later it turned off again without driving this time. The battery, gas and oil were fine. It is now very very noisy and undrivable. There was a light ticking prior, but nothing concerning or I haven't heard most cars do. Yes, available for inspection. I was very lucky I had hardly pulled out of my parking spot. If this had happened while driving in the street or freeway I could have caused an accident. It hasn't seized again, but I am not driving except to the dealer who said the engine needs to replaced and is not honoring the warranty. There was a recall on this model that stated what is doing now was the reason for the recall. They replaced some cable, but it did nothing for the issue. No warnings prior besides the light ticking which is a normal characteristic of Hyundais, and I experienced this first hand with my last Hyundai Elantra model, but it did not ever have issues.

Oil drips on driveway. Warning sensors for blind spots disfunctional.

The connecting rod bearing in cylinder 1 is bad and I noticed online alot of other models were listed with the same problem but not my model. My engine block needs to be replaced. Car has not been inspected by hyundai but just a licensed local mechanic because the dealerships said it would be months before they can look at it.

So took my car for a recall at Hyundai which it was related to a camp 966 engine monitoring. The car has been turning off multiple times so took it to them and they told me it needs a new engine at only 60,000 miles on it.

At 77,000 miles, with immaculate care taken of the engine with regular maintenance (and only 2 weeks since the previous oil change), the engine failed at the end of an 11.5 hour road trip and left me stranded on the side of a busy highway. This vehicle has the Hyundai Nu 2.0 GDi engine, which has been recalled in other vehicles for this same issue (and sometimes resulting fires), but not THIS vehicle.

On December2, 2021 I was driving on the freeway when my engine made a high pitched sound followed by a banging sound inside the engine. There were no warning messages or symptoms prior to the incident. I immediately pulled off the freeway as much as I could. Then the engine just quit running. It was terrifying as I was in morning rush hour traffic and couldn't pull all the way off the road. I called a tow company, then my local Hyundai repair shop. I was told by them that they wouldn't be able to look at it for 6 weeks! I ended up having it towed to a local auto repair shop in my neighborhood and was told that there was a complete engine failure. As the car was 3,000 miles over warranty the Hyundai dealer would look at it but it would take at least 2 months. I still owe money on the car and need a car for work so decided to have it repaired. The cost of that repair was 8,578.00, in addition I had rental cars for a month.

The contact owns a 2018 Hyundai Elantra. The contact stated that while driving approximately at 40 mph a loud ticking noise was suddenly present coming from the engine compartment and the vehicle would not properly accelerate. The vehicle was taken to the local dealer who diagnosed that the engine was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was not yet contacted regarding the failure. The failure mileage was 56,000.

Mileage: 56,000

Driving down the freeway when my engine starting making strange noise before a boom occurred from the front of the car and completely shut off. No warning lights either

I WAS DRIVING ON A THE INTERSTATE GOING 75 MPH WHEN I HEARD A LOUD THUMPING NOISE FROM THE FRONT RIGHT SIDE, I LOST POWER STEERING, POWER BRAKES AND THE CAR SHUT OFF. I HAD TO STRUGGLE TO MANEUVER AND STOP THE CAR TO THE EMERGENCY LANE. IT WAS THEN TOWED TO THE DEALER THAT DISCOVERED THE TIMING CHAIN FAILED. THE TIMING CHAIN ALSO DAMAGED OTHER INTERNAL PARTS THROWING FLUID THROUGHOUT THE ENGINE AND CAUSING METAL SHARDS FROM OTHER INTERNAL COMPONENTS. THE CAR HAS 32K MILES AND LESS THAN 3 YEARS OLD.

Mileage: 32,000

I BOUGHT A 2018 HYUNDAI GT SPORT 3 MONTHS AGO. SINCE DAY ONE CAR HAS BEEN STALLING AND HAVING A HARD TIME STARTING. I WAS ON THE HIGHWAY DOING 75MPH AND THE CAR JUST TURNED OFF NO WARNING. I CALLED THE DEALER IN MY AREA LET THEM KNOW ABOUT THE STARTING ISSUES AND THE STALLING ISSUES WITH THE CAR I TOOK IT IN TO THEM FEW DAYS LATER. THEY KEPT IT FOR 3 DAYS AND TOLD ME SORRY WE DO NOT KNOW WHAT TO TELL YOU. TOOK IT HOME AND THAT DAY THE CAR STALLED ON MY WAY HOME. I TOOK THE CAR BACK TO THE DEALER AND THEY HAD IT FOR 23 DAYS AND REPLACED THE FUEL PUMP AND THE INJECTION SYSTEM AND STILL DID NOT WORK. THE DEALER I BOUGHT IT FROM REPLACED THE BATTERY, KEYS STARTER AND ALTERNATOR BEFORE I BOUGHT IT AND THEY DID NOT TELL ME THIS CAR WAS HAVING ISSUES. THE CAR IS BACK AT THE DEALER 3/7/2019 WITH STALLING ISSUES AND RUST BUILD UP ON THE BOTTOM OF THE CAR. I HAVE A CASE WITH HYUNDAI AND THEY KEEP TELLING ME TAKE IT TO ANOTHER DEALER 4 DEALERS LATER AND NOTHING.CHECK ENGINE LIGHT CAME ON FLASHING ONE DAY BUT WENT OFF AND NO CODES FOUND. THIS HAS BEEN GOING ON FOR ABOUT 21/2 MONTHS CAR IS OUT OF SERVICE NOW FOR A TOTAL OF 26 DAYS NOW INCLUDING THE DAYS ITS BEEN AT THE CURRENT DEALER.

Mileage: 87

CAR SHUT OFF WHILE ON THE HIGHWAY RANDOMLY STARTED SHAKING. ALL LIGHTS TURNED ON CHECK ENGINE,MOTOR OIL LIGHT BATTERY LIGHT. CAR SHUT OFF TO THE POINT WHERE I COULDN'T ACCELERATE. SO IMAGINE BEING ON THE HIGHWAY AND YOUR CAR SHUTS OFF RANDOMLY WHILE YOUR IN MOTION AND CANT ACCELERATE TO MERGE TO THE EMERGENCY LANE. THIS HAPPENED 4 MORE TIMES ON MY WAY TO THE DEALERSHIP LESS THEN 800 MILES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Mileage: 800