2014 Hyundai Elantra acceleration problems

VEHICLE SPEED CONTROL

Vehicle Information: 2014 Hyundai Elantra SE Sedan, 4-Cylinder, 6-Speed Automatic, FWD Build Location: USA-Built Version (Montgomery, AL - VIN '5NP') Ownership: Second owner, purchased Certified Pre-Owned (CPO) from the Hyundai of New Port Richey dealer (Florida) in March 2016. Vehicle is owned outright. Mileage: 128,638 Approximate Date Incident Noticed: October 1, 2025 DESCRIPTION OF CRITICAL SAFETY DEFECT & WARRANTY REJECTION I am reporting a failure of the clock spring assembly, which compromises critical safety features and poses an unreasonable risk, especially since this vehicle regularly transports passengers, including children. My VIN was rejected by the Hyundai TXXA Clock Spring Extended Warranty validator despite exhibiting the exact failures covered by the campaign. Safety Failures: Airbag (SRS): Warning light is constantly illuminated; driver-side airbag is disabled and will not deploy, endangering the driver and front passenger. Horn: Completely inoperable, eliminating a vital safety communication feature required to warn other drivers. Cruise Control: Buttons on the steering wheel are non-functional. These failures are caused by a broken electrical connection within the clock spring (which typically runs the Airbag, Horn, and Cruise Control circuits). I believe the denial is related to my vehicle being the USA-Built version (VIN '5NP'). I request that NHTSA investigate why this safety campaign arbitrarily excludes USA-built Elantras (but not Korean-built) experiencing the identical failure, thereby placing an unreasonable repair cost burden on owners for a critical safety component.

NHTSA complaint #11699634 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

This has occurred three separate times, but this report explains what happened during the most recent occurrence. I was driving at 40 mph. The car in front of me hit their brakes, so I lightly tapped my brakes to slow down. When I tapped the gas pedal, the car would not increase speed. The check engine light, oil light, and battery light each turned on simultaneously. The car then stalled completely, but the lights remained on and the car didn’t lose power. I hit the brakes (which were now hard to push down), hit my emergency flashes so that the car behind me would pass me, pulled over to the side of the road, and then I turned off the car. When I turned the car back on, 30 seconds later, all of the lights were off and the car started with no issue.

NHTSA complaint #11593241 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

My car is only at 46000 miles.SinceI'm purchase from dealer it has given me the same issues of RPMs shooting up &speedometer going out of control the car wont go past 20mph & jerks back & forth, tyrning off while driving & has had a b"bad" drive since purchase. I dont know the issue and its never been fixed by dealer even though i took it in a few times for these issues. it now foing it again. my life is in danger with this care since purchase & hyundai shouldve replaced my car or engine but they do not care. this car is a lemon. and now the car can go on fire parked or driving? what can be done..on the nextvpart of complaint im putting down ladt week sice this is the newest incident of the desc.

NHTSA complaint #11568443 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

The piston rings do not seal leading to increased oil consumption and very low oil. My safety was put at risk because when I pulled out into traffic that was going at a high speed I could not accelerate. There was no warning or indication that this was going on prior to this incident. Yes this has been confirmed by a Hyundai dealership and the component was inspected. There was no warning sign before this incident.

NHTSA complaint #11561580 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

I have 2014 Hyundai Elantra it unsafe to drive put in drive it wouldn’t go forward . It jerky hard to go. Failure of light. Transmission.steer clutch shaft

NHTSA complaint #11542009 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

While driving over the last month, the car shuts off with no warning. There are no check engine or other lights that come on once it shuts down. There does not appear to be any consistency in the occurences, sometimes while idling, sometimes while driving 40 mph. Up until recently, the car would restart once I put it in neutral, but it now does not restart right away.

NHTSA complaint #11529070 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

I was driving the vehicle normally down the highway. When I exited the highway, I came to a stop light and made a complete stop at which point the engine stalled. I restarted the vehicle, the check engine light appeared, but I couldn’t get it to register any RPMs and I was left stranded in a busy intersection until help arrived.

NHTSA complaint #11517487 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

my car will stall randomly at stop signs and red lights with absolutely no warning. it’s super dangerous and has almost caused a wreck. i have taken it to mechanic and no codes are being thrown and it’s showing nothing is wrong. it’s a matter of time a accident happens and someone gets hurt. I would definitely like to figure this out!

NHTSA complaint #11510067 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

The contact owns a 2014 Hyundai Elantra. The contact stated while at a stop when the contact accelerated to move forward and the vehicle accelerated at high speed and the contact noticed white smoke was coming from the exhaust of the vehicle. An independent mechanic diagnosed the vehicle and stated that the rings around the engine needed to be replaced and that the vehicle had an oil leak, The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 120,000.

NHTSA complaint #11488790 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

I own a 2014 Hyundai Elantra. When the accelerator pedal is engaged, the vehicle hesitates and only accelerates to about 20 mph. The vehicle also stalls while at a complete stop and while driving. The vehicle was taken to an independent mechanic to be diagnosed multiple times, but a failure code could not be found. The mechanic cleaned all the sensors; however, the failure was not corrected. The mechanic stated that the throttle body was causing the vehicle not to accelerate and stall while driving. The vehicle was taken to the dealer for the recall and The vehicle was not repaired.

NHTSA complaint #11466026 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

When driving the vehicle the tachometer and speedometer remain at zero. This has been happening on and off for about a month. Multiple scan tools have been used to scan the vehicle with no codes appearing. Sometimes the vehicle will rev up but not accelerate.

NHTSA complaint #11447221 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

I financed my 2014 Elantra a few months ago in September and this engine is failing

NHTSA complaint #11446713 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL* THE CONTACT OWNS A 2014 HYUNDAI ELANTRA. WHEN THE ACCELERATOR PEDAL WAS ENGAGED, THE VEHICLE HESITATED AND ONLY ACCELERATED TO 20 MPH. THE VEHICLE ALSO STALLED WHILE AT A COMPLETE STOP. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC TO BE DIAGNOSED, BUT A FAILURE CODE COULD NOT BE FOUND. THE MECHANIC CLEANED ALL THE SENSORS; HOWEVER, THE FAILURE WAS NOT CORRECTED. THE MECHANIC STATED THAT THE THROTTLE BODY WAS CAUSING THE VEHICLE NOT TO ACCELERATE. THE VEHICLE WAS NOT TAKEN TO A DEALER. THE MANUFACTURER WAS CONTACTED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 93,532.

NHTSA complaint #11243598 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

2014 ELANTRA DRIVING THE CAR IN TOWN AT SLOW SPEEDS, USUALLY AROUND 15-25 MILES AN HOUR, WITH RPMS AT ABOUT 1250. FIRST NOTICED AN ISSUE WITH EXTREMELY JERKY DRIVING, BUT ADDED GAS AND THE PROBLEM WENT AWAY, AND I THOUGHT IT WAS A ONE-TIME THING. ABOUT A WEEK LATER, IT HAPPENED AGAIN. I SET AN APPOINTMENT TO THE MURDOCK HYUNDAI OF MURRAY UTAH TO SOLVE THIS ISSUE THAT WAS PUTTING MY FAMILY AND MY SECURITY IN RISK. ON JUNE 18TH AROUND 6 PM, THE DID A DIAGNOSTIC CHECK IN THE DEALERSHIP AND THEN, THEY RECOMMENDED ME TO CLEAN MY GAS INJECTORS, TO DO A TUNE-UP, TO DO AN ALIGNMENT AND TO ADD NEW FOUR TIRES CHANGE SINCE THEY WERE TOTALLY DAMAGED., SOME KIND OF HYUNDAI SOLVENT CLEANERS FOR THE GAS ENGINE. ALL OF THE SERVICES HAD A TOTAL OF $1043 DOLLARS. I THOUGHT IT WAS ALL IT NEEDED BUT NOT IT WAS NOT. A FEW DAYS LATER, THE CAR STARTED TO HAVE THE SAME SYMPTOMS AS BEFORE, LOSING POWER AGAIN, ENGINE SLOWING DOWN AND BAD GAS MILEAGE... I SET UP ANOTHER APPOINTMENT WITH THE DEALERSHIP.

NHTSA complaint #11228287 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL:CRUISE CONTROL

HYUNDAI ELANTRA. CONSUMER WRITES IN REGARDS TO VEHICLE AIRBAGS MALFUNCTION DURING ACCIDENT AND OTHER VEHICLE ISSUES. *SMD THE CONSUMER STATED THE AIRBAGS DID NOT DEPLOY DURING AN ACCIDENT.

NHTSA complaint #10694544 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL* THE CONTACT OWNS A 2014 HYUNDAI ELANTRA. WHILE DRIVING APPROXIMATELY 40 MPH, THE VEHICLE FAILED TO ACCELERATE WITHOUT WARNING AND THE RPM'S FAILED. THE CONTACT TOOK THE VEHICLE TO FAMILY HYUNDAI (8101 W 159TH ST, TINLEY PARK, IL 60477), BUT THE FAILURE COULD NOT BE DUPLICATED. THE CONTACT SENT AN EMAIL TO THE MANUFACTURER, BUT HAD NOT RECEIVED A RESPONSE. THE FAILURE MILEAGE WAS 28,804.

NHTSA complaint #11052176 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

WHILE DRIVING STRAIGHT ON INTERSTATE AT 65MPH WHEN THE TRACTION CONTROL LIGHT CAME ON FOR OVER 30 SECONDS AND DRASTICALLY SLOWED THE VEHICLE TO UNDER 20MPH. WEATHER CONDITIONS WERE COMPLETELY DRY AND ROAD SURFACE WAS SMOOTH. HAZARD LIGHTS WERE PUT ON TO WARN OTHER DRIVERS FROM POSSIBLE COLLISION AND I PULLED OVER. THIS HAS HAPPENED ON TWO OCCASIONS IN A 3 WEEK PERIOD. CAR WAS TAKEN TO DEALERSHIP WHERE THEY SAID NO CODES CAME UP AND THEY COULD NOT REPLICATE DESCRIBED PROBLEM. A RECALL WAS ISSUED IN 2011-2012 FOR SIMILAR ISSUE ON SAME MAKE AND MODEL.

NHTSA complaint #10991263 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL* THE CONTACT OWNS A 2014 HYUNDAI ELANTRA. THE CONTACT STATED THAT THE SPEEDOMETER WAS NOT READING ACCURATELY AND FLUCTUATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 15,000.

NHTSA complaint #10668980 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

TL* THE CONTACT OWNS A 2014 HYUNDAI ELANTRA. THE CONTACT STATED THAT WHEN ATTEMPTING TO RESUME ACCELERATION AFTER A COMPLETE STOP, THE VEHICLE DECELERATED. THE FAILURE OCCURRED NUMEROUS TIMES. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN WAS UNABLE TO DIAGNOSED OR DUPLICATE THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 300.

NHTSA complaint #10630403 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

I HAS RECENTLY TRADED IN MY 2012 HYUNDAI ELANTRA FOR A 2014 HYUNDAI ELANTRA. THE 2014 HAD STARTED DOING WHAT THE 2012 DID OCCASIONALLY, ACCELERATE WHEN I RELEASED MY FOOT FROM THE GAS TO SWITCH TO THE BRAKE TO BEGIN SLOWING DOWN FOR A LIGHT. AFTER I'VE APPLIED THE BRAKE AND I'M COASTING BEFORE I NEED TO APPLY IT AGAIN, THE CAR WILL ACCELERATE. I USED TO THINK IT WAS MY IMAGINATION, THEN I READ OTHERS CONFIRMING IT DOES HAPPEN. LATELY I'VE ALSO HAD AN ISSUE WITH THE CAR ACCELERATING WHEN I DO TOUCH THE GAS, THE ENGINE REVS UP AND BOLTS FORWARD LIKE I FLOORED IT, BUT I ONLY LIGHTLY TOUCHED THE GAS. I'LL BE BRINGING IT TO THE DEALER SOON FOR THESE ISSUES.

NHTSA complaint #10607815 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

I TOOK MY FOOT OFF THE GAS PEDAL TO SLOW THE CAR DOWN AS I WAS APPROACHING ANOTHER VEHICLE IN FRONT OF ME STOPPED AT A RED LIGHT. MY FOOT WAS NEITHER ON THE GAS NOR THE BRAKE AND THE CAR ACCELERATED AS IF I WAS PRESSING THE GAS PEDAL.

NHTSA complaint #10593619 — an unverified report by a vehicle owner.

VEHICLE SPEED CONTROL

MY LOW FUEL INDICATOR LIGHT HAD JUST TURNED ON. WAS GOING UP A VERY SLIGHT GRADE AND THE CAR STOPPED IN THE MIDDLE OF THE ROAD.

NHTSA complaint #10593617 — an unverified report by a vehicle owner.