Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2017 Hyundai Sonata owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2017 Hyundai Sonata. The contact stated that while driving at an undisclosed speed, the contact engaged the hybrid function on the vehicle and the vehicle unexpectedly stopped. The contact stated that the accelerator pedal was depressed; however, the vehicle took several minutes to respond. There were several unknown warning lights illuminated. The contact stated that when the vehicle accelerated, the vehicle jerked abnormally. The vehicle was taken to the dealer, where it was diagnosed and determined that the brake sensors had failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The manufacturer was made aware of the failure. The approximate failure mileage was 130,000.
The contact owns a 2017 Hyundai Sonata. The contact stated while driving 30 MPH, the service brakes independently activated, and the vehicle stopped with a hard impact. The contact stated that the failure caused items within the vehicle to be thrown around inside. The vehicle was taken to the dealer; however, the failure could not be duplicated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 45,000.
I purchased the vehicle in December and the same weak it began leaking oil the window won't roll down and the car shuts down by itself. It caused me to have an accident and the dealership has repaired it 14 times with the same issue. They are forcing me to drive an unsafe vehicle I need to report this vehicle as unsafe
The Abs brakes and traction control go in and out and affects the brakes while driving, I know there been reports of fire but for some reason my car is not in the recall, same thing with the air bags lights come on showing faulty air bags and on scanner tools but not recalled even though Hyundai knows about these issues. Now for engine I went to have my engine looked at 2 times for oil consumption and all they did was a combustion chamber cleaning twice which both failed in less the 8100 miles so when I took it back for another oil consumption test for the 3rd time today, the engine light came on, it started knocking, lost power and riding rough. …
I took my car to a shop due to my car having a loud knocking noise coming from the engine bay and lack of acceleration as well as the oil light flickering on and off and once the mechanic inspected my vehicle he said metal particles were being deposited into my oil due to internal engine parts. After picking my car up all the lights on the dash cut on and the car completely had no steering, no brakes, no power but the radio still worked. I barely could turn the steering wheel nor could stop the vehicle due to this and thankfully could coast into an upgrade leveled hill and stop the car. Car would barely recrank or hold power nor would go above 40 mph. Only drove 5 miles to get the car back home safely. Drove back around 3:00 a.m. so there wouldn't be much traffic out in case of something like this happening. Could've been catastrophic!
I was traveling on [redacted] Baton Rouge La. and Gonzales La. at 70 mph when I lost power to my vehicle , an alarm sounded saying it was the Hybrid control system failure, putting my safety at risk as I had to maneuver off the interstate and onto the shoulder during heavy traffic . I called State Farm insurance to get my vehicle towed to Ralph Sellers Hyundai in Gonzales La. where it is being repaired.
The hybrid system failure. Chrck engine light is flashing. Abs system failure. Battery failure. Car can't go over 45mph, lost a job because of the issues. I'm afraid the car is going to blow up or catch fire. I'm afraid to drive it. The acceleration is barely there. It's like the car doesn't even wanna go. It sucks through gas like no other.
Air bag and antilock brake lights came on. First dealer replaced the air bag control module. Secondary issue then identified a defective air bag. Both have not been replaced. I asked for the old parts and was told I could not have them. They were sent back to be rebuilt.
On or about August 13 2022, I notice the oil engine light come for a second, then it went off. After parking vehicle at my home and letting the engine cool off a bit and oil to settle, I checked dipstick only to find out that is was showing DRY no oils whatsoever, I then bought 1 qt of oil and added it to engine still dip stick showed dry and not a drop of oil on it. With still 3,000 miles to go before my next oil change, I decided to take it to PepBoys for a new oil change. After one week dip stick was showing oil on the low side and this time the metal on the stick showed whiteish, like it had been over heated. after this decided to take it to dealership GOSH HYUNDAI In Hemet 92545. I was told it would take 2 days to do some checks and get it ready for an oil consumption test. …
The sensors for braking did not work. I had an accident where I rear ended a truck. The brakes didn't work, only slid into the back of the truck. I was on a busy street when an emergency vehicle turned on sirens at the last second. The truck stopped as it should have. I braked as hard as possible but the car kept going until it collided into the truck. I have read reports on the 2017 Sonata which states the car will stop when it senses imminent danger. This one didn't. My concern is- is there more cars like this one out there that don't work as it should. I purchased this car 02/2017. Had only 23 miles. I took my car in for servicing the day before and was told there was a recall on the car. I never received a notice of recall and still haven't. Supossedly that was taken care of. The invoice shows the recall was for altn screw. It shows it was for santa fe spt/Sonata.
Brake complaints in other Sonata years
Frequently asked questions
How common are brake problems on the 2017 Hyundai Sonata?
NHTSA has 22 complaints about the brakes of the 2017 Hyundai Sonata, 3% of the model year's 766 complaints.
Is there a recall for 2017 Hyundai Sonata brake problems?
No. NHTSA lists no brakes recall for the 2017 Hyundai Sonata, though it has 3 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 Sonata brake problems start?
Half of the complaints with a recorded mileage happened before about 21,000 miles, and 62% before 25,000 miles.
Is it dangerous?
Owners linked 5 crashes, 0 fires and 0 injuries to brakes 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.