2005 Hyundai XG350 Acceleration Problems

Which parts fail

• Accelerator pedal
  4

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

Mileage when the problem started

• Under 25k
  2061%
• 25k–50k
  824%
• 50k–75k
  13%
• 75k–100k
  26%
• 100k–150k
  26%
• 150k+
  00%

Owner reports

Selected complaints filed with NHTSA by 2005 Hyundai XG350 owners, lightly cleaned up (personal details are redacted by NHTSA).

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?

I was almost parked at the curb in front of a drugstore with my foot on brake easing into spot when car lurched forward, jumped the curb and violently crashed into the concrete wall about 6-7 feet away. Wall, not brake, stopped car. People came out from store as crash was heard/felt inside. I don't know what would have happened to me if I didn't have seatbelt on. As it was, my chest was extremely sore for several weeks from seatbelt. Airbag didn't deploy. Car was totaled thank god as I would never drive it again. So many complaints with same issue no recalls or service bulletins. Hyundai line is can't find anything wrong when car was checked by them after accident so it is driver error. …

Speed control - acceleration. On 10 occasions since 03/05 the accelerator pedal can be depressed, nothing happens, and then the vehicle takes off. Yesterday was the last straw - backing up and it did it. When it did take off with accelerator depressed about half way, it took off and even though I was ready for it to do that I couldn't get it stopped quick enough and it hit a pole. It tore rear bumper. I have had it to dealer 4 times and they kept car for 5 days and could not duplicate the problem. Told us until they can get it to do it while they had it - there isn't anything they can do. So far when it has happened pulling out into traffic we were able to avoid getting hit. Cannot understand why NHTSA hasn't addressed this problem. Perhaps because no documented deaths have occurred.....

Tl contact owns a 2005 Hyundai XG350. The contact stated that the vehicle attempted to surge forward while it was stopped with his foot on the brake pedal. The contact applied heavy pressure to the brake pedal to keep the vehicle stopped. The failure occurred four times. One of the failures resulted in a crash. A police report was not filed and no injuries were reported. The vehicle was taken to an authorized dealer once where they were unable to diagnose the failure. The vehicle was not repaired. The failure mileage was 1,500 and the current mileage was 44,000.

I purchased a new 2005 xg350l on December 7, 2005. My initial opinion of the vehicle was that the car ran sluggish unless it was warmed up at least for 5 minutes before driving. Then on December 26, 2005 we went to the store and before turning off the car there was a rough idle. About 45 minutes later we left the store and proceeded home. I sat in the passenger's seat as we drove about of a mile and was forced to sit in stop and go traffic. We stopped with about car length between us and the car in front with his foot on the break. All of a sudden the car started easing forward. He applied more pressure to the break and the car continued to move faster. When he realized the car was not going to stop he then pressed the break with both feet with all of his strength and the car accelerated even more and lunged forward into the car in front pushing it towards the car ahead of it. …

On three occasions over about 4-5 month period ending July 2010 I experienced sudden unintended acceleration with my 2005 Hyundai xgl350. The first 2 times I was stopped at a red light and the car started to accelerate unexpectedly. I already had the brake depressed for the traffic stop and had to press the brake as hard as possible to prevent the car from taking off. The unexpected acceleration surge lasted about 5 seconds then ended. The car did move forward but in both cases I did not have any injuries or damages. I did not take the car in for service after either of these incidents. The third incident happened on July 25, 2010 in norfolk, va. I was parking between two cars in a restaurant parking lot. The parking space faced a curb which boarded some floral landscaping. …

Hello. I was sold a lemon by [redacted] of al's motor sales located on 1126 n. Montello st, brockton, ma 02301.when I went for inspection I got a rejection sticker because the car needed a catalytic converter, timing belts, airbag light being on, headlamps and a backlight, and would mysteriously accelerate on its own for no reason without my foot being on the gas pedal! Once I ran a VIN scan realized that he received the car like this but never disclosed that to me. He also left the information of the previous owners in the vehicle. Rather, he turned off the o2 sensor lights and LED me to believe that the car could pass inspection. I traded my 1998 Infiniti i30 for a 2005 Hyundai xg 350 so that the price of the vehicle would no longer be $3500 but $2400. Within two weeks the check engine light came on. …

2005 XG350 has had two specific problems related to engaging car in drive and acceleration. When car has been sitting overnight or for a prolonged period of time and it is placed in drive, the car just sits there in excess of 15 seconds and then transmission clunks into gear and starts going. This problem occurs daily when car is first started and reappears if car cools down for several hours after it has been driven. Related to this problem is acceleration of vehicle. After gear finally engages, the slightest pressure on the gas pedal can send the car lurching forward quickly. The other day while backing out of the driveway and then placing car in drive, was almost hit by another car coming down the street that no doubt expected us to be moving. Even though we had placed the car in drive, it went nowhere. Lucky the other guys stopped in time or we would have been hit. …

Dt: contact stated when the vehicle was put into drive and the accelerator pedal was pressed vehicle lurches forward. Sometimes this left rubber marks on the pavement or road. At times when the vehicle was put into reverse it would do this in reverse as well. The vehicle when put into gear will go into the higher gears until the rpms reached 4000. Consumer had logged 600 events, and there have been 54 occasions when this occurred. The service dealer did not know why this happened, but did replace the vehicle with the same make and model of this vehicle, and it did have the same defect. The dealer stated there was no recorded complaints with Hyundai. Consumer has contacted the manufacturer several times, but had no resolution. Consumer no longer had this specific vehicle, but felt this was a safety defect and someone should be made aware of this problem.

Acceleration complaints in other XG350 years