2017 Hyundai Santa Fe Acceleration Problems

Which parts fail

• Cruise control
  2
• Accelerator pedal
  1

Components named in complaints (accelerator pedal, throttle, sudden acceleration, cruise control).

Mileage when the problem started

• Under 25k
  2775%
• 25k–50k
  514%
• 50k–75k
  13%
• 75k–100k
  26%
• 100k–150k
  13%
• 150k+
  00%

Owner reports

Selected complaints filed with NHTSA by 2017 Hyundai Santa Fe owners, lightly cleaned up (personal details are redacted by NHTSA).

My engine had been using oil at a very fast rate and I was just told that hyundai consume a lot of oil. I have had this car since 77k miles and have issues ever since I bought it. At first I had issues with it not accelerating on the interstate and then it would randomly stop while I was driving, almost like a car hiccup. I took it to the dealership, and other car shops and no one found anything wrong. Finally two weeks ago, I was on I85 and my car was driving really roughly and idling roughly as well. No lights came on until it started to decelerate on the interstate to 30 miles an hour and I had to pull off to the side of the road. Then a bunch of different lights came on and I turned it off and it wouldn't turn back on. …

The contact owns a 2017 Hyundai Santa Fe. The contact stated that while driving approximately 15 MPH on the interstate, the contact heard an abnormal tumbling sound coming from underneath the vehicle. The contact noticed an unknown object had detached from the vehicle. Upon inspection, the contact determined that the detached component was the radar sensor. The Automatic Emergency Braking (AEB) system and the adaptive cruise control became inoperative. The contact stated that the vehicle had not been involved in a crash prior to the failure. The vehicle was taken to an independent mechanic for inspection. The mechanic advised that the radar sensor could not be reattached and stated the failure was possibly caused by a crash. The local dealer was contacted, but the vehicle was neither diagnosed nor repaired. The manufacturer was not informed of the failure. …

The contact owns a 2017 Hyundai Santa Fe. The contact stated while driving approximately 30 MPH, the accelerator pedal became inoperable when depressed and the vehicle stalled. The contact stated that a unknown warning light illuminated. The vehicle failed to accelerate and coasted downhill into a parking lot. The vehicle was towed to the local dealer where it was diagnosed and determined that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was contacted but no additional assistance was provided. The failure mileage was approximately 83,000.

Vehicle spontaneously caught on fire in the engine compartment while driving in a parking lot. Within 30 minutes, the vehicle was incinerated down to the frame. Prior to this incident, a warning had flashed on the message center that the adaptive cruise control system was being disabled. It is pending insurance inspection and we are trying to contract Hyundai. The police report is not available yet, but is with the Faribault, MN, Police Department and is #[redacted].

2017 Hyundai Santa Fe. While driving, the vehicle stopped accelerating. The vehicle operated appropriately until half way through the drive. At stops, it would take several seconds (30ish) for the car to go about 20 mph (rough estimate). The car would not go above 50mph, and this took a few minutes to reach with the gas pedal all the way down. I parked the car and had it towed. After approximately a month at the dealership, the dealership text that there was a hole in the valve cover and that the engine would also need to be replaced. They did not say what was wrong with the engine and later stated, also via text, that to do a diagnostic it would be $350. I purchased the car used with approximately 45000 miles 10 months prior. At the time of the incident, there were 62000 miles on the vehicle. They stated that it would not be covered under warranty because I was not the original owner. …

The engine seized due to an issue with the oil plug and another part, leading to a lack of oil in the system. The vehicle is currently with Hyundai and available for inspection upon request. How Safety Was Put at Risk: While driving on the highway, I suddenly lost acceleration (below 40mphs). I was forced to pull over to the left side of the highway where it was shallow, where I risked being hit by passing vehicles until there was a safe break in traffic, allowing me to maneuver to an exit. This created a hazardous situation for both myself and other drivers. Reproduction or Confirmation of the Problem: The issue has been confirmed by an independent automotive technician, who diagnosed the problem as a blown engine caused by a lack of oil. The vehicle is now with Hyundai for further inspection. …

Hyundai Campaign 9C2 recall update: Took my vehicle in to have the Hyundai Campaign 9C2 recall update performed on the vehicle on June 9th, 2026. Since the update the vehicle is hesitant/jerky upon first drive of the day or anytime it sits more than a few hours. Occasionally it will do this while I am driving. I feel it is a saftey risk because this could cause my vehicle to abruptly hesitate without braking and cause someone to hit me, or worsetransmission to fail while at highway speeds. I took it back to the dealer that performed the required update around june 23rd 2026 and informed them of the problem caused by the 9C2 campaign update.I got the we don't know anything about it causing problems runaround. Even though it has been documented that dealers were notified of this problem. …

Vehicle was brought to an authorized dealership for service, and while there Campaign 9C2 (ECU Software Update for Theta II Emissions Improvement) was performed. Immediately following this software update, the vehicle developed drivability degradation, specifically engine stutter/hesitation and rough transmission shifting during cold starts. When attempting to accelerate in the first few minutes of driving, the vehicle delays engagement and then suddenly surges or lurches forward unpredictably. This creates a safety hazard, as the unpredictable power delivery and lag prevent the vehicle from accelerating safely when merging into traffic or turning across oncoming lanes, placing occupants at an immediate risk of a collision. The software logic error is fully reproducible every time the vehicle has sat long enough to cool down. The dealership confirmed the update was applied. …

Twice my car's gear shifter went from Drive to the right hand side of the gear box. 90% or more of the power cut out immediately creating a massive safety issue. In both instances, i was pulling into traffic after making complete stops at stop signs. The first time, i turned left, the second time I turned right. The shift was untouched by me as it is not a stick shift car. Hyundai charged me close to $400 for the privledge of telling me that I or something bumped the shifter to the right. Also they claim that the shifter is designed to go into low gear if it does go to the right. a low gear should provide more power not cut it out. They refuse to fix the issue, but wanted me to bring it in so they could duplicate a problem that has occurred twice in four months.

After the installation of the Service Campaign 9C2 engine update, the car now seems to surge or rev up briefly at lower speeds like it can't find the right gear or is trying to briefly accelerate. It doesn't seem to be as noticeable at highway speeds, but in residential or low speeds, it's very noticeable and a little unsettling as the car feels like it wants to briefly lunge forward. No lights are on the dash and there is no indication of any malfunction, but it did not behave this way prior to the 9C2 engine program update. I waited for a couple weeks before contacting Hyundai Corporate about this issue because I was hoping maybe the transmission or engine was relearning after a battery disconnection, but it has not gone away.

Acceleration complaints in other Santa Fe years