2020 Hyundai Sonata driver assistance & safety tech problems

Related recalls

No recalls on file.

What owners say

1. Filed Aug 26, 2026NCCrashBrakesDriver Assistance & Safety TechElectrical System

   Parking malfunction. Parked, running car moved itself to reverse and backed up a driveway crossing a dirt road and hitting a fence and post. This car could have hit and severely injured anyone who was in the path while it was reversing on its own. Car was in reverse and all parking sensors were blaring when the car was found minutes later.

   NHTSA complaint #11759884 · source
2. Filed Aug 23, 2026AZDriver Assistance & Safety Tech

   The reverse camera only shows a black screen and will put drivers in danger while not being able to see behind them while reversing. This needs to be recalled and repaired. Especially in situations where a person is reversing out of a driveway onto a major/busy road. Sometimes it works, but a lot of the time it is just a black screen with the green, yellow, and red lines to indicate how far your wheel is turned. But it doesn’t allow you to actually SEE where you’re backing…

   NHTSA complaint #11758919 · source
3. Filed May 29, 20262,000 miCADriver Assistance & Safety Tech

   The contact owns a 2020 Hyundai Sonata. The contact stated while driving at various speeds, the vehicle experienced phantom braking and nearly came to a complete stop. The contact stated that the automatic emergency braking system unexpectedly engaged while there were no roadway obstacles or vehicles near the vehicle. The vehicle was taken to the dealer, who informed the contact that they would need to verify whether the repair would be covered under the active warranty. The…

   NHTSA complaint #11740813 · source
4. Filed Oct 30, 2025130,000 miTNDriver Assistance & Safety Tech

   The contact owns a 2020 Hyundai Sonata. The contact stated that while reversing, the back-over prevention camera malfunctioned, and there was no image of the rear of the vehicle displayed. The contact stated that the display screen only displayed lines. The contact stated that the failure caused a visibility hazard for the driver. The vehicle was examined by an independent mechanic who determined that the camera was faulty and needed to be replaced. The vehicle was not yet…

   NHTSA complaint #11696513 · source
5. Filed Sep 12, 202546,000 miALDriver Assistance & Safety Tech

   The contact owns a 2020 Hyundai Sonata. While the contact's wife was reversing, the back over prevention camera system displayed a black screen. The dealer was made aware of the failure. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact referenced an unknown recall with a similar failure; however, the VIN was not associated. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately…

   NHTSA complaint #11686955 · source
6. Filed Jun 3, 202564,000 miNCDriver Assistance & Safety Tech

   The contact owns a 2020 Hyundai Sonata. The contact stated that after shifting into reverse(R), the back over prevention camera screen temporarily displayed an image before the screen went black. The contact stated that the failure had become a recurring failure, but recently became a constant failure. The contact had not taken the vehicle to a dealer or independent mechanic to be diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage…

   NHTSA complaint #11664535 · source
7. Filed May 4, 2025TXDriver Assistance & Safety TechElectrical SystemTransmission & Drivetrain

   My 2020 Hyundai Sonata has a recurring defect in its engine or transmission, causing sudden deceleration to ~10 mph without warning, often on major highways, with warning lights (check engine, ESC, traction control, etc.) flashing seconds before the car decelerates. This forces me to swerve off busy roads, endangering me, my passengers, and other drivers. Near-misses with traffic pose an extreme safety risk, causing significant emotional distress. The car, at a Hyundai…

   NHTSA complaint #11658811 · source
8. Filed Apr 6, 2025TXDriver Assistance & Safety TechElectrical SystemTransmission & Drivetrain

   My 2020 Hyundai Sonata has a recurring and dangerous defect involving sudden deceleration while driving. Without warning, the car abruptly slows to ~10 mph—often on the highway—while numerous dashboard warning lights activate. This poses an extreme safety risk to me, my passengers, and other drivers, as it forces me to maneuver off the road to avoid being hit. The issue began in January 2021, just five months after I purchased the car new. It has occurred repeatedly and…

   NHTSA complaint #11653076 · source
9. Filed Apr 6, 2025TXDriver Assistance & Safety TechElectrical SystemTransmission & Drivetrain

   My 2020 Hyundai Sonata has a recurring and dangerous defect involving sudden deceleration while driving. Without warning, the car abruptly slows to ~10 mph—often on the highway—while numerous dashboard warning lights activate. This poses an extreme safety risk to me, my passengers, and other drivers, as it forces me to maneuver off the road to avoid being hit. The issue began in January 2021, still with less than 4,000 miles and just five months after I purchased the car…

   NHTSA complaint #11653038 · source
10. Filed Dec 9, 2024MDDriver Assistance & Safety TechAcceleration & Cruise Control

    while driving my car on 3 different days the car slowed down, and the lights came EPB on, on the dashboard the EPB light came on the check engine light came on , forward collision light, auto hold light, slippery road light , and caution light with a ! mark.

    NHTSA complaint #11629778 · source
11. Filed Mar 14, 2024CADriver Assistance & Safety TechFuel, Hybrid & EV PropulsionAcceleration & Cruise Control

    While driving at about 45mph a warning flashed on my dash. I couldn't read it before it disappeared, but it was something about front collision., contact dealer. the car immediately lost all power. Everything was still running, but I had no acceleration. I had to back down a busy road into a vacant lot. I had just come off of the highway when this happened, if I had still been driving on the Highway, I would have been hit by a car from behind, since there was no warning at…

    NHTSA complaint #11577446 · source
12. Filed Oct 27, 2023CACrash1 injuredTowedAirbagsDriver Assistance & Safety Tech

    I was driving Home from work and I fell a sleep behind the wheel and Hit a park car. The police report states that my impact speed was 50mph. My insurance company is very concerned that my Air Bags or sensors are defective and that I contact you immediately. Due to the damage and impact of the accident.

    NHTSA complaint #11552328 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology