2016 Hyundai Elantra acceleration problems

Filed Jul 25, 2026 · Acceleration, Suspension · NC

P0420 P0441 P0014 P1326 C1260 C1688 C2130 These are the codes that's affecting my car

Filed Dec 20, 2025 · Acceleration, Engine · CA

Engine turns off unexpectedly when driving. all power steering and brakes stop working when engine itself off. entire engine, drive train, and vehicle shakes while driving. Transmission is a replacement as first one failed after 90 days of purchase. paid labor for replacement and waited over 6 weeks without a vehicle. Now replaced oem transmission slips out of gear. making vehicle difficult to drive as the transmission and engine sputter and make ride jerky. car has turned off on the freeway in traffic 3 times. almost causing an accident each time. car has been robbed at least 5 separate times. stealing items within the vehicle. car was locked and next day it is unlocked and my stuff all gone. i am scared to drive the vehicle. i believe it is a lemon.

Filed Apr 11, 2024 · Acceleration, Engine · TX

*4th report to the federal safety agency* Trouble getting response from HMA case manager. Delaying/not responding to multiple emails/calls/contact forms. Please advise. 1. What component or system failed or malfunctioned, and is it available for inspection upon request? - Multiple systems continuing to fail/malfunction. Multiple attempts to repair at Hyundai dealerships. Vehicle is currently at the dealer service center where it was originally purchased on [XXX] (Dealer number P113588 , Ron Carter Hyundai) now Big Star Hyundai. Yes - PLEASE conduct VIN inspection on this vehicle. I am waiting to hear back from dealer & HMA case manager to confirm vehicle specifications relating to VIN in their system and full engine inspection results. 2. How was your safety or the safety of others put at risk? - First reported and diagnostics completed by dealer [XXX]. Problems with engine have continued and escalated to current. Latest safety risk event occurred [XXX] while driving on high traffic freeway in Houston, TX with child passenger. Vehicle lost ability to control speed/driving power suddenly stopped/failed resulting in tow to dealership. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? - Yes. Included notes in attached reports from previous dealer visits. Symptoms, reporting & attempts to repair started within warranty window. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? - Previous inspection reports attached. 5. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? - CEL was on and off at the start of symptoms Dec. 2021. Dealer replaced MAP sensors and the issues continued without warning lamps. Dealer stated they could not diagnose anything without warning lamps. Dealer reported unknown diagnosis and closed case. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 27, 2024 · Acceleration, Engine · TX

Initial report on March 7, 2022 (approx. 94K miles), second report on Dec. 12, 2023 (approx. 111,700 miles). Third report March 27, 2024: Recent event occurred on March 23, 2024 (approx. 112K miles) when my vehicle suddenly stopped moving while driving 55mph on a freeway with child passenger in the vehicle, putting both of us at risk for collision. Vehicle did not have any warning lights turn on prior to or during event. The vehicle did not move again after multiple attempts to accelerate to exit freeway safely. After shifting to neutral and back to drive, the vehicle suddenly jolted and accelerated randomly while holding foot on the gas pedal (no control over timing of acceleration). We were able to exit the freeway safely. This same issue repeated multiple times while driving us to a safe area to call for a tow truck. The vehicle was towed to dealership location it was originally purchased at on March 26, 2024. Diagnostics appointment scheduled for March 28, 2024. I have completed oil change services on this car about every 1,200 miles to keep the engine running since there was no solution for any of my previous reports to dealership (even when opening a case with Hyundai), their previous determination was to close case since the diagnostics report did not show error codes in report. Previous dealership advisor made a verbal comment that the real problem is something their computers do not scan codes for, and his recommendation was to "drive it til the wheels fall off" after paying thousands in services that did not solve the root problem. Hoping this appointment will lead to a safer outcome.

Filed Dec 12, 2023 · Acceleration, Engine · OR

What component or system failed or malfunctioned, and is it available for inspection upon request? Available for inspection upon request. Please do! Loss of power. Reported same issues a year ago. Brought to dealership, sold on other services that did not solve problem. Opened a case with Hyundai. No solution. How was your safety or the safety of others put at risk? Random loss of power. Hyundai rep stated it’s a problem their systems do not actually scan for so it’s common this won’t appear in inspection reports. Has the problem been reproduced or confirmed by a dealer or independent service center? Dealer rep drove my car and mentioned he noticed it tries to accelerate when idle, but without a code he can’t do anything about it. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? A Hyundai dealership inspection was completed. Suggestion I buy a new engine. I declined since the multiple repairs paid for already were supposed to fix the problem, but they didn’t. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No warning lights for anything in over a year but I am still dealing with same loss of power and acceleration control issues.

Filed Apr 24, 2023 · Acceleration, Electrical · NJ

My Hyundai Elantra started completely shutting off while I was driving. This happened on multiple occasions like in slow traffic and while going high speeds on the highway. This is scary and dangerous when my toddler child is in the car. I took it to 3 different mechanics and no one can find any codes or anything wrong with it---but it continues to happen and put my life and my daughters life at risk. I have seen so many people complaining of the same thing--but nothing has happened? This last dealership has had my car for 3 weeks (and counting) but still cannot find the issue. I have about 125,000 miles on the car.

Filed Oct 18, 2022 · Acceleration · 58,000 miles · AZ · crash

The contact owns a 2016 Hyundai Elantra. The contact stated that while driving out of the driveway, the vehicle experienced unintended acceleration. During the incident, the engine's RPMs suddenly increased before the vehicle erroneously accelerated forward and crashed into a tree causing body damage to the vehicle. During the crash, no injuries were reported and no police report was taken. The vehicle was taken to the local dealer who was unable to determine the cause of the failure. The manufacturer was notified of the incident. The failure mileage was 58,000. The contact stated that the failure occurs very rarely at approximately 1 to 2 times a year.

Filed Jun 3, 2022 · Acceleration, Engine · MD

April 2022 Car engine stalls while at stop sign or light. Started happening once or twice every few weeks. Took the vehicle to two repair shops but could not diagnose the issue. Vehicle giving no diagnostic codes or warning lights. May 2022 vehicle is now stalling and losing acceleration while driving on busy highway, leaving me and my children on the highway shoulder. Car loses acceleration and coasts to a complete stop. No warning lights have come on previously. Could not book an appointment with Hyundai dealer until June 25, 2022. As of June 3rd 2022, check engine light is on and car having trouble starting back up after stall. Vehicle is stalling and losing acceleration 2-3 times a day no matter the speed. Booked appointment with Hyundai dealer in another area for June 9, 2022.

Filed Dec 15, 2021 · Acceleration · 62,000 miles · OH · crash

The contact owns a 2016 Hyundai Elantra. The contact stated that while pulling into a parking space with her foot on the brake pedal, the vehicle inadvertently accelerated and crashed into the tires of another vehicle. There were no warning lights illuminated. The air bags failed to deploy. The contact did not sustain any injuries. A police report was filed. The contact and her husband drove the vehicle to her residence. The dealer was notified of the failure and advised the contact that they were not aware of such failure. The manufacturer was not notified of the failure. The vehicle was not diagnosed or repaired. The approximate failure mileage was 62,000.

Filed Oct 9, 2021 · Acceleration, Engine · OR

I lost power while driving my 2016 Hyundai Elantra gt and also started hearing a knocking sound so I pulled over and knocking sound got real loud. A friend came and towed me home about 70 miles and the next morning I checked the oil and my oil was empty. My car has been out of commission for over a month and my mechanic says that a ball bearing is the reason for my engine failure and knocking sound.