Acceleration complaints by model year
Which parts fail
Components named in complaints (accelerator pedal, throttle, sudden acceleration, cruise control).
Mileage when the problem started
What owners report
My 2005 Hyundai XG350 has experienced sua, (sudden unwanted acceleration) twice in the last 3 months. This is a very serious and dangerous safety problem that has been reported to Hyundai motor America and the NHTSA too many times. Twice, I pulled into a parking spot and while applying the brake, the car accelerated and I was unable to stop it , even when I stepped on the brake very hard. I wonder why, after so many complaints to Hyundai motor America and the NHTSA, that this very dangerous safety issue didn't warrant a recall, since this problem goes back to 2006.
While following a line of cars through a local city street my car accelerated coming close to the car in front. I brake, the car did not respond. I used all my strength on the brake pedal and the car responded by going faster. To avoid a collision, I swerved to the right into a convenience store driveway. However, I hit the bumper of the car in front of me and this finally stopped my car. I read on a website that this is not an uncommon problem with this model. Why has there been no recall to solve this problem?
We have a 2004 Hyundai xg 350, on at least a half a dozen occasions, while coming to a stop, the car would suddenly accelerate and would not stop while pressing on the brake, luckily we were able to avoid any accidents. We took it to our local Hyundai dealer on 10/20/10, they told us it was the throttle position sensor, they replaced it, said it was fixed. Yesterday, 11/28/10, it did the exact same thing again, only this time we weren't as lucky. My husband tried to stop as he pulled into our driveway, the car suddenly accelerated, and he ran into the front of our house. The front bumper of the car has minimal damage, our house has a huge dent in the front of it. Needless to say, it could have been much worse, he wasn't injured, but he or someone else could have been. …
Dt: the contact was traveling on a very busy street at a low speed. He was directly behind a delivery truck. He was constantly braking and then moving slowly, the contact's foot was never on the accelerator pedal. The engine suddenly accelerated without warning and the contact hit the back of the truck at about 3 MPH. The brakes were applied, but the vehicle failed to stop before hitting the truck. The front of the vehicle sustained heavy cosmetic damage and the hood was damaged as well. No police report was taken at the scene. There were no injuries sustained. The vehicle was seen by the service dealer for diagnostic testing, and the results were negative. Therefore, no repairs were made. The primary concern of the contact was that he saw a similar complaint filed by another vehicle owner online.
Tl* the contact owns a 2003 Hyundai XG350. The contact stated that with the brakes depressed, the vehicle abnormally accelerated and crashed into a building. The contact sustained two shattered knee caps. The vehicle was destroyed and a police report was filed. The contact did not inform the dealer or manufacturer of the failure and was still hospitalized. The approximate failure mileage was 45,000. The VIN was unavailable. Updated 1/24/2012
Vehicle would accererate without warning while brakes applied to slow down or stop. Driver hit another car in the rear and caused $6100 in damage. No one was injured. Car towed for damage repair and subsequently towed from collision shop to dealer. Dealer could find no problem. This problem occured 4 times since car was purchased in 4-03.
Vehicle: 2002 Hyundai XG350 sedan, equipped with ABS system and anti-skid device. Events leading up to failure: since 2003, on three occasions the following happened- while driving at less than 5 MPH, upon depressing the brake pedal the car accelerated. On the fist two occasions no damage occurred. The car stopped on hitting the car ahead. On the third occasion,in September 2009, there was extensive damage to the car and others. On this last occasion I have the impressing that my right foot was firmly depressing the brake pedal, not the accelerator. In speaking with computer specialists, I was informed that there May be a feedback problem in the computer control system. As far as I know the body damage to all cars has been repaired.
Tl contact owns a 2002 Hyundai XG350. The contact was driving approximately 5 miles per hour and the vehicle accelerated. The vehicle crashed into another passengers driver side door. There were no injuries. There was damage to both vehicles. There were no warning lights present. The previous incident the vehicle was at a stop sign and it accelerated on its own. The vehicle is being repaired. There was no police report. The current and failure mileages were 46000. Updated 01/29/08 the consumer stated dealer had complaints of gas pedal and brake pedal are too close. Updated 01/29/08
Frequently asked questions
Which Hyundai XG350 years have acceleration problems?
By NHTSA complaints, the 2005 (40), 2004 (12), 2002 (6) and 2003 (6) model years. Acceleration complaints make up 28% of all complaints for the 2005.
Is there a recall for Hyundai XG350 acceleration problems?
No. NHTSA lists no speed control & acceleration recall for any Hyundai XG350 model year. A widespread problem may still be covered by an extended warranty or a manufacturer service bulletin, so ask a dealer.
At what mileage do Hyundai XG350 acceleration problems start?
Across all years, half of the complaints with a recorded mileage happened before about 23,000 miles; 78% happened before 50,000 miles.
What part fails most often?
Owners most often name the accelerator pedal (8 mentions), followed by the cruise control (1).
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.