Which parts fail
Components named in complaints (battery, alternator, wiring, ignition, instrument cluster, infotainment).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2017 Hyundai Elantra owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2017 Hyundai Elantra. The contact stated upon coming to a complete stop, the vehicle accelerated unintendedly over a concrete bar and drove up a hill. The contact depressed the brake pedal but to no avail. The contact steered the vehicle to the right direction to avoid entering a pool. She then crashed into multiple objects including trees, concrete parking bars, and multiple vehicles before coming to a stop. The air bags did not deploy upon impact. The contact was taken to the hospital by ambulance and was treated for injuries to her neck and back. A police report was filed. Due to the failure, the vehicle was towed to an independent tow yard where it was destroyed. Parking barriers and trees were damaged as a result of the failure. The manufacturer was notified of the failure. The failure mileage was approximately 25,000.
The contact owned a 2017 Hyundai Elantra. The contact stated while driving approximately 45 MPH, the fuel warning light flickered and the radio activated and deactivated independently. The vehicle was taken to a dealer where it was determined that the vehicle was performing as designed due to a satellite not being connected. On another occasion, the vehicle accelerated on its own and the brake pedal hesitated to respond. The contact depressed the brake pedal to the floorboard in order for the vehicle to come to a stop. The vehicle was taken to another dealer due to the above failures; in addition to shuttering and jerking while depressing on the accelerator, as if it was not receiving fuel. The vehicle was not repaired. The contact did a private diagnosis which indicated electrical system malfunction. The contact was informed to start using a halo battery charger to jump the vehicle. …
Often times the rear video backup camera built into the car blanks out when reversing, randomly. Dealership said it's possibly bad wiring but would be expensive to investigate, with me on the hook for paying if they can't locate the issue. After going two years with this issues intermittently occurring, I was able to get a new camera installed under warranty, as a way to ensure the camera itself is the issue. In the end, blanking out condition is still present. I do check my mirrors often but it's not safe for this camera to blank out as often as it does. I'm hoping this is an isolated issue but in the case more owners have this concern I'd like NHTSA to investigate the matter and if needed, recall affected vehicles. …
Component or system failed: The electrical and/or engine system failed spontaneously. Gray smoke originated from under the hood, followed by black smoke and an intense fire. The vehicle is NOT available for inspection as it was declared a total loss and scrapped 30 days after the incident. Safety risk: My safety was at immediate risk as I was inside the vehicle when the fire began. Public safety was also threatened; the Bloomingdale Fire Department had to evacuate a Wendy's restaurant and its customers for two hours due to the intensity of the fire and smoke. Confirmation of problem: The problem was confirmed as a Total Loss due to fire by the Bloomingdale Fire and Police Departments on the scene. Inspections: The vehicle was inspected at the scene by police and fire officials. …
Odometer Fraud. The contact purchased a 2017 Hyundai Elantra. It was discovered that there was a mileage discrepancy. The vehicle was a dealer sale. At the time of purchase, the vehicle mileage was 99,546, and at the time of registration, it was discovered that the title mileage was 99,498. A Carfax report was obtained. During research the documents indicated that the mileage was 179,942. The dealer and title location were contacted.
Driving with no signs or dash lights came on to warning me of any issues. Car started acting like it was stalling out one morning parking it at work. Went to leave work had a very slight almost not noticeable knock sound went I started up. Car was acting like it was running harder then usually. Continued home and my car started seizing up and caused my car to stall completely out while driving on the interstate. I was a mile from home, started my car back up and continued to get somewhere safely and out of danger of the interstate. It stalled out multiple times before reaching my driveway. By then my car seized up and was making a loud knocking sound. I push the car into the garage and check the oil and there was no indication of any oil on my dip stick. Went ahead gave my car an oil change earlier then scheduled. 1.5 quarts of oil only came out and was low almost 4 quarts. …
While sitting at a busy red light (02/15/2022), the car just cut off. No warnings, no lights, just cut off. After several attempts, I managed to get car started. Traffic was piled up behind me. I took it to a local auto store that will run engine checks for free. No problems were found. The employee said it just registered "recharge battery". The car had no more problems that day. I did report it and was supposed to "stop by dealership" in the next few days, as this was "not a safety issue and it could be recharged quickly". The next evening, my daughter drove me to the store for some needed items. On the way back, she was slowly veering right at a yield sign and the engine cut off again. It was dark and the way the road curved, cars coming from behind us would not be able to see us. We were afraid that we would be hit from behind, causing injury to us and anyone in the other vehicle. …
For more than two years, at irregular intervals, the passenger air bag light on the front panel blinks and the associated chime sounds for about two minutes, then stops. This happens with no passenger in the seat. I have asked the dealer (Fitzgerald Hyundai in Rockville, MD) several times to look into this. My concern is that if the air bag alarm cannot be trusted when there is no passenger, how can it be trusted to work when it needs to? This seems to me to be an unsafe condition. The dealership stated that since the problem occurs intermittently, they cannot determine a cause, and advised me to contact Hyundai Motor America and would likely meet with a representative. I contacted the company in July, and was designated Case No. [redacted]. Over the next two months, in several email communications with "[redacted]," I was informed that I should take the car to another dealer. …
The vehicle has experienced ongoing powertrain and electrical malfunctions over several months. The most common symptoms include being stuck in 4th gear (limp mode), complete loss of RPM and speedometer readings, and illumination of the check engine and ESC lights. Most recently, while traveling at approximately 10 mph, the vehicle experienced a sudden loss of both acceleration and braking. The brake pedal became stiff and unresponsive, and the car had to coast to a stop without driver control. This posed a serious safety risk to myself and nearby traffic. These issues have persisted across multiple service visits to Ricart Hyundai in Groveport, Ohio. That dealership has replaced the crankshaft position sensor three times, the powertrain control module (PCM), and the battery, but the underlying problems remain unresolved. …
I am filing a formal complaint regarding my 2017 Hyundai Elantra SE (VIN: [redacted] ). The vehicle is currently experiencing severe safety issues, including unexpected engine stalling and loud mechanical rattling, alongside a P0014 diagnostic code. These symptoms align directly with the defects described in Recall 203 (NHTSA 21V301000) involving improper piston ring heat treatment and Service Campaign 966regarding engine bearing wear. As a consumer, I am extremely concerned about the risk of a crash due to sudden loss of power. I am really concerned for my son and I as I drive my vehicle. I am requesting: 1. An immediate inspection and confirmation of eligibility for an engine replacement at no cost to me. 2. Verification of the lifetime long-block warranty extension associated with the KSDS (Campaign 966) update. 3. …
Electrical complaints in other Elantra years
Frequently asked questions
How common are electrical problems on the 2017 Hyundai Elantra?
NHTSA has 114 complaints about the electrical system of the 2017 Hyundai Elantra, 14% of the model year's 795 complaints. The component named most often is instrument panel › speedometer/odometer (2 mentions).
Is there a recall for 2017 Hyundai Elantra electrical problems?
No. NHTSA lists no electrical system recall for the 2017 Hyundai Elantra, though it has 4 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2017 Hyundai Elantra electrical problems start?
Half of the complaints with a recorded mileage happened before about 42,000 miles, and 24% before 25,000 miles.
Is it dangerous?
Owners linked 6 crashes, 2 fires and 7 injuries to electrical system problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.