23 of the 333 complaints about the 2020 Hyundai Elantra are about the driver-assist systems — 7% of everything reported for this model year. Half of the failures with a mileage on record happened before 1,700 miles.
23
Complaints
3
Crashes
0
Fires
0
Injuries
Filed with NHTSA, in their own words.
FORWARD COLLISION AVOIDANCE: WARNINGS
Logic board failure part number 99211-F2000 leading to inoperable lane keeping assist and forward collision avoidance.
NHTSA complaint #11757608 — an unverified report by a vehicle owner.
LANE DEPARTURE: ASSIST
Logic board failure part number 99211-F2000 leading to inoperable lane keeping assist and forward collision avoidance.
NHTSA complaint #11757608 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: WARNINGS
I have a 2020 Hyundai Elantra Limited that was purchased new in December of 2020, has 17,764 miles, and no damage. At the end of May/early June of 2026, the car gave warning messages for the following: check forward collision avoidance assist system, check lane keep assist system, and check high beam assist system. The car was inspected by the dealership, from which it was purchased, on June 29, 2026. The technician report says error codes C1604 and C1606 were found and that the car required replacement of the front camera system at the cost of $1991.49. Front camera failure negates the ability to use the advanced safety features of this car. These features are so important to alert and, more importantly, assist the driver avoid accidents and improve all motorists safety. I have read numerous complaints depicting the same problem with this front camera system. Hyundai issued TSB 20-BE-006H due to multiple problems just like the one that happened to me. I have corresponded with Hyundai about this situation and my concerns on why a car with this few miles and no damage had a failure of this magnitude. They are unwilling to assist due to the warranty expiring 6 months ago. For components this important to the safety of all drivers, I would like to see a recall established to hold Hyundai accountable for faulty components. Safety should not be limited by a warranty and last longer than 5 1/2 years. Than you for your consideration.
NHTSA complaint #11748184 — an unverified report by a vehicle owner.
LANE DEPARTURE: ASSIST
I have a 2020 Hyundai Elantra Limited that was purchased new in December of 2020, has 17,764 miles, and no damage. At the end of May/early June of 2026, the car gave warning messages for the following: check forward collision avoidance assist system, check lane keep assist system, and check high beam assist system. The car was inspected by the dealership, from which it was purchased, on June 29, 2026. The technician report says error codes C1604 and C1606 were found and that the car required replacement of the front camera system at the cost of $1991.49. Front camera failure negates the ability to use the advanced safety features of this car. These features are so important to alert and, more importantly, assist the driver avoid accidents and improve all motorists safety. I have read numerous complaints depicting the same problem with this front camera system. Hyundai issued TSB 20-BE-006H due to multiple problems just like the one that happened to me. I have corresponded with Hyundai about this situation and my concerns on why a car with this few miles and no damage had a failure of this magnitude. They are unwilling to assist due to the warranty expiring 6 months ago. For components this important to the safety of all drivers, I would like to see a recall established to hold Hyundai accountable for faulty components. Safety should not be limited by a warranty and last longer than 5 1/2 years. Than you for your consideration.
NHTSA complaint #11748184 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
Around 9 p.m., I was driving home on the XXX highway at about 60 mph. The road was clear, with no obstacles ahead, and it was lightly drizzling in the [XXX] area. Suddenly, the car's emergency braking system activated, then returned to normal. Although it startled me, thankfully there were no cars behind me to avoid a collision. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11740572 — an unverified report by a vehicle owner.
BACK OVER PREVENTION
The contact owns a 2020 Hyundai Elantra. The stated that the backup camera was inoperable. No warning lights were illuminated. The contact stated that failure was related to NHTSA Campaign Number: 24V879000 (Back Over Prevention). The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was contacted, who confirmed there was no recall. But no assistance was provided. The failure mileage was approximately 19,100.
NHTSA complaint #11734908 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: WARNINGS
I no longer have this vehicle, as I traded it in once I was able to lower some of my negative equity. During owning the 2020 Hyundai Elantra, a deer it the side of my vehicle and knocked me into the center of the road while I was driving. No airbags had come out, nor was any sensor activated. About 6-8 months later, I was driving down the same road and a deer had run across the road. The forward collision sensor did not alert me (I was paying attention to the road, but would have absolutely heard it), and my airbags did not deploy. My car suffered over $9,000 in damage and I had a concussion.
NHTSA complaint #11728934 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: WARNINGS
The headlights failed their soldered incorrectly. It looks like a child did it. The back camera has yet to work since shows black screen, and then the lane Assistant shuts off in the middle of the road and there’s nothing blocking it. lights went out and kept going out no matter how many times I replaced the bulb when I was on the highway. I took it into Firestone and they stated that the company fucked up the wiring system.
NHTSA complaint #11722670 — an unverified report by a vehicle owner.
BACK OVER PREVENTION: REARVIEW SYSTEM BRAKING
The headlights failed their soldered incorrectly. It looks like a child did it. The back camera has yet to work since shows black screen, and then the lane Assistant shuts off in the middle of the road and there’s nothing blocking it. lights went out and kept going out no matter how many times I replaced the bulb when I was on the highway. I took it into Firestone and they stated that the company fucked up the wiring system.
NHTSA complaint #11722670 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
Cruise control on 55mph, car has slowed down going straight no uphill or downhill and accelerator did not work nothing blocking the accelerator. Had to pull over to a shoulder to shut engine off and on to drive. Tapping cruise control up to speed up in regulated area such as from 55 to a 65mph zone.. cruise control speed lowered. Attempting to speed up with accelerator still only slowing down. 3 times this year I had to change spark plugs within a 6 month period Error code p0302. Replaced battery alongside. Continues p0302 code. Replaced all coils and spark plugs still p0302. Climbing uphill vehicle sometimes looses power that happened twice in 2025 and twice in 2022. 3 times in 2024. That i must turn on hazards and floor the accelerator to gain speed on up hills in neighborhoods going 25 mph. I have dropped to 10 mph. I get oil change regularly. Always when due. Every few months I make sure to get a full car inspection to make sure everything is in proper working order.
NHTSA complaint #11701387 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
I have taken my car in twice due to my car braking when there is not a vehicle and or object in front of me but there are vehicles right behind me that have to brake but Crain denies that there are any issues. My engine light came on a couple of weeks ago and I took it to Auto Zone to have a diagnostic test done. The report states that it has something wrong with the transmission/transmission line and or fluid. When I looked it up online it stated that there are recalls on engine pistons that could cause the diagnostic test to read that it's the transmission. My car is a 2020 Hyundai Elantra value edition but according to your website, there are no recalls!?
NHTSA complaint #11678338 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: WARNINGS
The forward collision or emergency braking system gets activated by direct sunlight. Almost every day I drive with the sun directly in front of me in the morning and the car can activate this system with no need when going 30 to 75 mph on the 405, an extremely busy highway. There have been many almost rear ends if I wasn't able to accelerate through the braking. This is a weekly if almost daily occurrence. The independent auto shop said it can happen but they have replaced break pads twice and I'm only at 60,000 miles.
NHTSA complaint #11577287 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING
The forward collision or emergency braking system gets activated by direct sunlight. Almost every day I drive with the sun directly in front of me in the morning and the car can activate this system with no need when going 30 to 75 mph on the 405, an extremely busy highway. There have been many almost rear ends if I wasn't able to accelerate through the braking. This is a weekly if almost daily occurrence. The independent auto shop said it can happen but they have replaced break pads twice and I'm only at 60,000 miles.
NHTSA complaint #11577287 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
This vehicle has what is now known as "Phantom Braking" since day of delivery over two years ago and was reported to NHTSA previously by me and Hyundai which has not or will not try to correct this Safety Hazard. Last incident this occurred on 3/11/2023 for at least the 6th time. This has happened with vehicles behind me which have come close to hitting me.
NHTSA complaint #11511636 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: WARNINGS
This vehicle has what is now known as "Phantom Braking" since day of delivery over two years ago and was reported to NHTSA previously by me and Hyundai which has not or will not try to correct this Safety Hazard. Last incident this occurred on 3/11/2023 for at least the 6th time. This has happened with vehicles behind me which have come close to hitting me.
NHTSA complaint #11511636 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: WARNINGS
My car does not have forward collision warning or lane departure warning. But sometimes it will randomly pop up and the screen and cause my breaks to abruptly stop and almost crash.This has happened atleast 8 times and the car was bought brand new in 2020
NHTSA complaint #11440768 — an unverified report by a vehicle owner.
LANE DEPARTURE: WARNING
My car does not have forward collision warning or lane departure warning. But sometimes it will randomly pop up and the screen and cause my breaks to abruptly stop and almost crash.This has happened atleast 8 times and the car was bought brand new in 2020
NHTSA complaint #11440768 — an unverified report by a vehicle owner.
LANE DEPARTURE: BLIND SPOT DETECTION
The contact owns a 2020 Hyundai Elantra. The contact stated while driving at various speeds, the vehicle erroneously switched from smart mode to sport mode causing the vehicle to independently accelerated. Additionally, the lane departure system would erroneously activate. The contact also stated that while driving at an undisclosed speed, the vehicle pulled to the right. The contact also stated that the exhaust pipe was rusted. The cause of the failures was not yet determined. The local dealer and manufacturer were notified of the failure. The approximate failure mileage was 400. Consumer stated vehicle needs to brought in again, passenger seatbelt alarm goes off without anyone being in the vehicle. AC was leaking water and sensors keep changing automatically. In addition tire has been replaced after 3500 miles. Manufacture has been contacted several times and refused to buy the car back. Consumer has filed the complaint with the BBB.
NHTSA complaint #11422894 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: WARNINGS
The forward accident avoidance system repeatedly cuts off the gas and prevents the car from moving even when there is nothing that could be considered a hazard in front of the car. It leaves me stranded half way through a turn in an intersection or the entrance to a parking lot. The gas pedal is disabled until the computer decides that it is safe. The service manager at the dealer says there is nothing they can do as the system is extremely sensitive and they get a lot of complaints about it. To be left in the middle of an intersection as the light changes and cross traffic starts or to to be stopped halfway through a turn onto a road with approaching traffic is not safe.
NHTSA complaint #11420844 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
WHEN CRUISE CONTROL IS ACTIVATED, THE ENGINE RPM AUTOMATICALLY INCREASES BY ABOUT 700 RPM. AT 75 MPH, THE ENGINE RPM IS 2300. WHEN CONTROL IS ACTIVATED, ENGINE RPM INCREASES TO 3000 RPM AND REMAINS THERE. THIS DECREASES GAS MILESGE AND INCREASES WEAR ON ENGINE.
NHTSA complaint #11413015 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE: WARNINGS
TL* THE CONTACT'S BOYFRIEND OWNS A 2020 HYUNDAI ELANTRA. THE CONTACT STATED THAT WHILE DRIVING AT VARIOUS SPEEDS, THE FORWARD COLLISION AVOIDANCE SYSTEM ACTIVATED INDEPENDENTLY. THE CONTACT ALSO STATED THAT THE FORWARD COLLISION AVOIDANCE WARNING LIGHT WAS DISPLAYED ON THE INSTRUMENT PANEL. THE CONTACT HAD INITIALLY TAKEN THE VEHICLE TO MITCHELL HYUNDAI (1600 E. PARK AVE, ENTERPRISE, AL 36330) WHERE THE SERVICE TECH STATED THAT THE DEALER TAG MAY HAVE CAUSED THE ISSUE. THE CONTACT DISPUTED THE CLAIM. THE FAILURE RECURRED TWICE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 1,700.
NHTSA complaint #11383433 — an unverified report by a vehicle owner.
LANE DEPARTURE
2020 HYUNDAI ELANTRA. CONSUMER WRITES IN REGARDS TO UNINTENDED ACCELERATION. *LD THE CONSUMER STATED THE CRUISE CONTROL WAS ACTIVATED. WHILE DRIVING UP A HILL, THE VEHICLE SPED UP PAST THE SET SPEED. THE DEALER AND MANUFACTURER WERE NOTIFIED AND STATED THE VEHICLE WAS OPERATED AS DESIGNED. WHILE DRIVING, THE STEERING SUDDENLY JERKED TO THE LEFT ABOUT 1.5 INCHES. THE DEALER TURNED THE SENSITIVITY LEVEL ON THE LANE ASSIST. ALSO, THE VEHICLE DOES NOT A METAL SCREEN OVER THE AIR INTAKE FOR THE HEATER. THIS COULD ALLOW RODENTS TO ENTER INTO THE CAB.
NHTSA complaint #11300931 — an unverified report by a vehicle owner.
FORWARD COLLISION AVOIDANCE
TL* THE CONTACT OWNS A 2020 HYUNDAI ELANTRA. WHILE DRIVING 60 MPH, THE FORWARD COLLISION AVOIDANCE SYSTEM FAILED TO WARN OF AN ICE BUCKET IN THE ROADWAY. WHILE ATTEMPTING TO AVOID THE ICE BUCKET, THE CONTACT STRUCK THE ICE BUCKET WITH THE PASSENGER SIDE BUMPER. THE CONTACT STATED THAT THERE WAS PHYSICAL DAMAGE TO THE BUMPER. A POLICE REPORT WAS FILED AND THERE WERE NO INJURIES. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC FOR THE BODY REPAIRS. THE VEHICLE WAS TAKEN TO ATLANTIC HYUNDAI (193 SUNRISE HWY NORTH SERVICE RD, WEST ISLIP, NY 11795, (631) 587-0700) WHERE IT WAS DIAGNOSED THAT THE FORWARD COLLISION AVOIDANCE SYSTEM FUNCTIONED AS INTENDED. THE MANUFACTURER WAS INFORMED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 500. THE VIN WAS NOT AVAILABLE. *TR*JB *DT
NHTSA complaint #11257932 — an unverified report by a vehicle owner.