2018 Hyundai Elantra GT Problems

The vehicle is experiencing engine-related excessive oil consumption, which has led to failure of the catalytic converter and emissions system. The root issue appears to be an internal engine defect causing oil to burn during operation. Yes, the vehicle is available for inspection upon request, including the engine and catalytic converter components. The excessive oil consumption creates a risk of engine damage or sudden engine failure while driving, which could lead to loss of power in traffic. Additionally, a failing catalytic converter can cause reduced engine performance, stalling, or overheating, increasing the risk of unsafe driving conditions, especially on highways or in heavy traffic. Yes, the issue was previously reported to a dealership, including concerns about excessive oil consumption. The problem has continued and worsened over time, now resulting in a check engine light and catalytic converter-related fault codes, confirming the ongoing condition. The vehicle has been inspected by a dealership service department in the past regarding oil consumption concerns. At this time, it has not been inspected by police or insurance representatives. Further inspection by the manufacturer or authorized dealership can be conducted upon request. Yes, symptoms began with excessive oil loss requiring frequent top-offs, followed by the appearance of a check engine light. The issue was first reported approximately one year ago and has progressively worsened, ultimately resulting in catalytic converter-related fault codes and continued oil consumption.

Engine consumes large amount of oil requiring oil refill every week, without turning on check engine and/or engine oil light. Raising the chances to cause accidents due to engine failure while driving, and requiring mechanical intervention to rebuild the engine or a total engine swap. There are over 40 other complaints about this same issue, and it needs to be addressed.

when moving during heavy traffic the car, when braking, will suddenly stop or stop heavily at slow speeds. this causes passengers to be jolted as well as following cars. possible rear end collision is the effect as well. passenger safety of accident is a concern. no warning or indication has been shown at dash.

On 6/27/24 while starting my car in the morning an ABS failure light came on, various other system failure lights came on and have stayed on since that day including Cruise Control and Auto Hold. My car only had 33,250 miles on it! I purchased for an OBDII Reader hoping the failure was just a Wheel Speed Sensor. Unfortunately, the error code registered in the ECU was C240201 “Motor Failure” I brought in my car to a very reputable Auto repair shop, and for a $139 diagnosis fee, they confirmed that the ABS Motor / Pump had failed. The owner of the Repair Shop HAD NEVER seen a car of this age and such low milage have this failure previously. The estimate for repairs was over $2,000 as Hyundai is asking for $1300 + tax for just the part. I have read from on-line forums other Elantra GT 2018-2020 owners having the same failure and thought it should be reported.

when moving during heavy traffic the car, when braking, will suddenly stop or stop heavily at slow speeds. this causes passengers to be jolted as well as following cars. possible rear end collision is the effect as well. passenger safety of accident is a concern. no warning or indication has been shown at dash.

18000 MILES ON THE CAR STARTED HEARING AIR COME FROM THE BRAKE PEDAL. TOOK IT TO THE DEALER WHO INFORMED ME THAT THE BRAKE BOOSTER WAS FAULTY NO RECALL ON THE 2018 ELANTRA GT BUT THERE IS ON THE 2017. CAR LOOSING POWER AND SLIPPING TRANSMISSION. DEALER WAS PLANNING TO CHARGE FOR THE INSPECTION OF A WARRANTIED VEHICLE AND IT ENDED UP WITH A BRAKING SYSTEM ISSUE?

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.

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!!!

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.

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.

when i was in the rear seat and closed left side door, i found myself stuck. the window would not go down from switch as well so i could not use outside handle for exit. after climbing to other side of backseat with my physical impairment (difficult in tight space backseat) i exited and checked outer handle the door opened. i then checked child saftey lock switch and it was not in child safety position. i checked the window power switch at driver door main control and window went down but not back up.

On 6/27/24 while starting my car in the morning an ABS failure light came on, various other system failure lights came on and have stayed on since that day including Cruise Control and Auto Hold. My car only had 33,250 miles on it! I purchased for an OBDII Reader hoping the failure was just a Wheel Speed Sensor. Unfortunately, the error code registered in the ECU was C240201 “Motor Failure” I brought in my car to a very reputable Auto repair shop, and for a $139 diagnosis fee, they confirmed that the ABS Motor / Pump had failed. The owner of the Repair Shop HAD NEVER seen a car of this age and such low milage have this failure previously. The estimate for repairs was over $2,000 as Hyundai is asking for $1300 + tax for just the part. I have read from on-line forums other Elantra GT 2018-2020 owners having the same failure and thought it should be reported.

I HAVE THE SPORT MODEL OF THE ELANTRA GT WITH THE FULL LED HEADLIGHTS AND THERE ARE MOON SHAPED SHADOWS WITHIN THE HEADLIGHT PATTERN THAT ARE VERY DISTRACTING WHILE DRIVING AT NIGHT.

THE LIGHTING AREA OF THE HEADLIGHTS IS MUCH TOO LOW. YOU CAN NOT SEE VERY WELL THE AREA IN FRONT OF YOU. SEE THE ATTACHED IMAGE OF A GROUP OF GIRLS ON THE SIDEWALK. YOU CAN BARELY SEE THEM FROM THE WAIST OR KNEES DOWN.

My vehicle is a 2018 Hyundai Elantra GT sport. The side walls on the Hankook Ventis S1 Noble 2 tires are cracking. The tires lose air constantly and cannot be driven on for a fear of a blowout. There has been a recall for this same make and model of tire just not this size for the same problem. This tire needs to be recalled before someone is hurt from a collision.

The tires came stock on this model car and at the 30K mile mark I noticed cracking or splitting in the sidewalls of each of the tires. I am not aware if the manufacture, Hankook, has released any statements or confirmation about this issue but the issue occurred well with the 50K mile warranty window. This was shocking to see and could have been very dangerous to myself and other drivers had the cracking sidewalls on any of the tires failed or caused a blowout on the road. Because of the nature of this issue there were no warning signs. Luckily I caught this issue before it contributed to any accidents or harm.

MY CAR, WITH LESS THAN 4K, HAS A "SPONTANEOUS" WINDSHIELD CRACK THAT IS LARGE, LONG AND TRAVELS ACROSS MY LINE OF VISION WHICH IS A SAFETY ISSUE. NOTHING HIT THE WINDSHIELD, IT IS PARKED IS LOCKED GARAGE AND I DID NOT DRIVE OVER ROUGH TERRAIN, HIT A POTHOLE, DRIVE UNDER ANY BRIDGES OR PARK UNDER A TREE. I DIDN'T DRIVE ON A HIGHWAY EITHER. I JUST GOT IN MY CAR AND THERE IT WAS! THIS CRACK IS GROWING IN LENGTH AND I HAVE NOTICED SOME BLACK, FOAM TRIM CURLING UP ALONG THE EDGE OF WHERE THE WINDSHIELD MEETS THE HOOD. THERE IS NO VISIBLE POINT OF CONTACT THAT I CAN SEE, NO CHIPS, NO STAR BURST CHIP - JUST SMOOTH ON THE OUTSIDE AND INSIDE OF CAR. THERE IS ALSO SOME STRANGE SPLATTER MARKS ON THE INSIDE OF THE WINDOW AS IF A SMALL CARBONATED BEVERAGE WAS SHAKEN UP. OPENED & SPRAYED ON IT BUT THE SPOTS ARE HARD & CAN'T BE EASILY SCRAPED OFF. I WILL BE CONTACTING THE DEALERSHIP TO SEE IF THEY WILL REPLACE IT AS I DO BELIEVE THIS IS A MANUFACTURING DEFECT.

TIRE: HANKOOK VENTUS S1 NOBLE 2. SIZE: 225/40R18 88W. ABNORMAL CRACKS ALL AROUND THE CIRCUMFERENCE OF OUTER SIDEWALL OF OEM TIRE FIRST NOTICED AT 17K MILES. TIRES HAVE 22K MILES NOW. NEW PORT RICHEY HYUNDAI INSPECTED ALL FOUR TIRES AND SPOKE TO HANKOOK AND ARE AWARE OF THE NHTSA RECALL FOR THE SAME BRAND AND MODEL TIRE WITH EXACTLY THE SAME DISCREPANCY BUT DIFFERENT SIZE AND WILL NOT REPLACE THEM. HYUNDAI SAID HANKOOK MAY OFFER TO REPLACE ONLY IF I PAY A PRORATED AMOUNT. TIRES ARE OEM INSTALLED ON MY 2018 HYUNDAI ELANTRA GT SPORT. VEHICLE IS GARAGED DAILY, NO DANGEROUS DRIVING, OR PASSENGER OR CARGO WEIGHT IN EXCESS LOADED WHILE STATIONARY OR WHEN DRIVING.

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.

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.

The contact owned a 2018 Hyundai Elantra GT. The contact stated on one occasion, while driving the transmission locked up at two stop lights while in neutral (N) and stalled. The vehicle was able to restart. Additionally, the contact stated that while powered off, and being towed in Neutral (N) by a motor home, a passing driver notified him of a fire in the vehicle. The vehicle was pulled to the side of the road where fire was observed emanating from the engine compartment. The flames spread to the rear of the motor home and the contact attempted to disengage the hitch. The contact sustained a hand injury but did not receive medical attention. The fire department extinguished the fire. A police report was filed. The vehicle was towed to a lot where it was deemed totaled. The contact stated that the insurance company ruled the origin of the fire as the drive train of the vehicle. The manufacturer was notified of the failure and a case was filed. The failure mileage was approximately 19,000.