Which parts fail
Components named in complaints (accelerator pedal, throttle, sudden acceleration, cruise control).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2017 Hyundai Tucson owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2017 Hyundai Tucson. The contact stated that while reversing out of the driveway, the vehicle failed to accelerate despite depressing the accelerator pedal numerous times. The contact then firmly depressed the accelerator pedal, and the vehicle experienced an unintended acceleration at approximately 35 MPH. The vehicle drove into the neighbor's yard and crashed into the neighbor's house. No air bags were deployed. No injuries were sustained, and medical attention was not received. A police report was not filed. The contact was able to drive away from the scene. The insurance company had the vehicle towed to an independent mechanic for inspection. The manufacturer was not made aware of the failure. The failure mileage was approximately 24,000.
The contact owns a 2017 Hyundai Tucson. The contact stated while driving at various speeds, the vehicle would suddenly lose motive power and would not immediately accelerate while depressing the accelerator pedal. Additionally, the vehicle would not exceed 60 MPH while depressing the accelerator pedal. The vehicle was taken to the local dealer who indicated that no failure was found. The contact was informed that the vehicle operated as designed. The contact also stated that while operating the vehicle, the brake lights remained illuminated at all times. The vehicle was taken to the local dealer who replaced a sensor and the failure was remedied. No further information was available. The failure mileage was 68,000.
The contact owns a 2017 Hyundai Tucson. The contact stated that while driving at various speeds, the vehicle stalled with an unknown warning light illuminated. The vehicle then abruptly accelerated forward with the continuous depression of the accelerator pedal. The contact had taken the vehicle to a dealer however, the mechanic was unable to determine the cause of the failure. Upon investigation, the contact discovered NHTSA Campaign Number: 21V727000 (Engine) which she linked to the failure. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 33,000
The contact owns a 2017 Hyundai Tucson. The contact stated while driving approximately 35 MPH, the oil and battery lights illuminated continuously. Additionally, the vehicle decelerated and stalled. The vehicle was unable to restart. The vehicle was towed to the dealer. The contact was informed that there was no oil in the engine. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 55,164.
The contact owns a 2017 Hyundai Tucson. The contact stated that while depressing the accelerator pedal, the vehicle failed to respond while stopped at a red light. A dealer was contacted. The vehicle was taken to the dealer to be diagnosed; however, the diagnostic result was unknown. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 95,000.
The contact owns a 2017 Hyundai Tucson. The contact stated that while the accelerator pedal was depressed, the vehicle hesitated and failed to move. There were no warning lights illuminated. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 68,000.
I was driving to work after dropping my son off and I took a right turn onto a street and my car slowed down and the check engine light came on, flashing. I continued to drive to work as I was one minute away and needed to get off the street asap. (where I turned had no room for pulling over). I parked my car. I had a prenatal appointment to go to, so I started my car. No check engine light when started until I got on the on ramp to the mass pike, my car went from 50 to 35 in a matter of minutes. I went into the breakdown lane until the next exit which was only a mile or so. I pulled into a gas station and called my husband to come get me as I still had an appointment to go to. After my appointment we retuned to my car and had it towed to the dealership as it is not safe to drive while pregnant. They told me it may be an engine issue and they will try to expedite my car. …
The check engine light started flashing and the vehicle would not go over 25 miles per hour. Thankfully I was pulling into a parking lot when the reduction in speed occurred. If this had happened on the interstate (which I commute on regularly) it could have been extremely dangerous. Hyundai dealership never returned my calls about service, I had the vehicle towed to another service provider (Jensen Tire & Auto) who performed a diagnostic which showed codes P0300/0302/1326/0011. They also said the engine was 2 quarts low on oil and there was no sign of an oil leak. The vehicle mileage was at 74344. I had oil changed at 71579 miles with full synthetic, and at 66230 miles prior to that. There is no sign of oil leak where I park the car. I regularly change my oil and service my car according to the manufacturer recommendation (just not at the dealership). …
My 2017 Hyundai Tucson is experiencing dangerous, sudden engine stalling, which are symptoms directly matching Service Campaign T1B. These critical safety issues surfaced following a total engine replacement in June 2025. Despite the vehicle being within the 12-month/12,000 mile workmanship warranty, the dealership is refusing to honor this coverage or offer goodwill assistance. My claim is based on a documented pattern of physical and technical negligence: - Failure to Update Software: The dealership failed to perform the mandatory ECM/TCM software integration (Campaign T1B) during engine swap, which is required to prevent the exact stalling I am now experiencing. - Dismissal of Warning Lights (Code P0456): One day after the engine replacement was "completed," I returned to the dealership because the Check Engine Light illuminated with Code P0456. …
Car has been hesitating to start this last week, Friday 6/2/23 warning lights came on & air conditioning stopped working. My local Hyundai shop is booked 2 weeks out so I already have an appt for 6/13/23. But on 6/2 I barely made it to a shop close to my home for a diagnostic check. Code P1111 was stored, cleared & retested. It's for fuel pump, circuit was tested & no faults were found & test driven with no return of code. Picked up car on Monday 6/5 with no issues. Tuesday car hesitated to start, 3rd time it started with no issue & no warning light/s. Today 6/7 around noon while I was making a turn the car completely shut off without warning. I've also noted that the oil level is always low, I have to check & put in oil at least every 2 weeks but there doesn't seem to be an oil leak. Also from stop to go at a light for example the car hesitates and then jerks forward. …
Acceleration complaints in other Tucson years
Frequently asked questions
How common are acceleration problems on the 2017 Hyundai Tucson?
NHTSA has 88 complaints about the speed control & acceleration of the 2017 Hyundai Tucson, 8% of the model year's 1,092 complaints. The component named most often is accelerator pedal (3 mentions).
Is there a recall for 2017 Hyundai Tucson acceleration problems?
No. NHTSA lists no speed control & acceleration recall for the 2017 Hyundai Tucson, 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 Tucson acceleration problems start?
Half of the complaints with a recorded mileage happened before about 12,000 miles, and 76% before 25,000 miles.
Is it dangerous?
Owners linked 3 crashes, 0 fires and 2 injuries to speed control & acceleration 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.