Most common 2004 Hyundai XG350 problems
Share of the 44 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Hyundai XG350 complaints by model year
Best XG350 years: 2003, 2004. Years to avoid: 2005, 2002. Compare all years →
2004 Hyundai XG350 recalls (1)
Suspension
Hyundai is recalling 188,282 my 2001-2004 sonata and my 2001-2004 xg300 and xg350 vehicles originally sold in or currently registered in the states of connecticut, delaware, illinois, indiana, iowa, maine, maryland, massachusetts, michigan, minnesota, missouri, new hampshire, new jersey, new york, ohio, pennsylvania, rhode…
Remedy: Dealers will measure the thickness of the front sub-frame and inspect the front sub-frame for corrosion damage and, if necessary, the front sub-frame will be replaced with a new sub-frame that incorporates additional…
What 2004 Hyundai XG350 owners say
Air bags
Air bag sensor light came on. New sensor was put in under warranty. A year later the sensor light came back on. It was replace at my cost ($250) because it was out of warranty. A year later the sensor light comes back on. It was not fix, however, when the timing belt was replace in 2013 at 60,000 the sensor light went off. After recent dealer computer repairs in March of 2015 the sensor air bag light came back on April 2015. My neighbor has the identical model and has the same problem with the sensor light.there are blogs on line that discuss the failures of the air bag sensor. I don't know if the air bag works or not.
Dt: the contact complained about sudden acceleration. The problem occurred when slowing down or after the vehicle came to a complete stop. The vehicle was involved in an accident. The contact was pulling into a parking space when the vehicle accelerated and ran into a building. The only damage to the vehicle was to the front bumper cover. Upon impact, the airbags did not deploy. The consumer was wear his seat belt. No injuries were sustained. The contact took the vehicle to the dealership. They could not duplicate the problem and no repairs were done. Updated 1/11/2006 -
Speed control & acceleration
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.
Electrical system
Tl* the contact owns a 2004 Hyundai XG350. While exiting a parking space, the vehicle accelerated independently. The contact depressed the brake pedal various times, but the vehicle failed to stop until the ignition key was turned to the off position. The vehicle could be restarted, but the failure recurred. The vehicle was taken to the dealer and an independent mechanic where the failure was unable to be replicated. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was 80,000.
2004 Hyundai xg350l has had intermittent air bag light come on dash during warranty period. All repairs under warranty as simple fix of loose connections. Within six months of out of warranty period air bag light on again and taken to Hyundai dealership who now states that this repair is out of warranty and will cost over one thousand dollars. In the interm the supplementary restraint system will not work.
2004 Hyundai XG350 engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.5L 6-cyl | 5-speed automatic | FWD | 15 / 24 / 18 |
EPA ratings. Class: Midsize car.
Frequently asked questions
Is the 2004 Hyundai XG350 a good car?
Based on 44 owner complaints filed with NHTSA, the 2004 XG350 rates better than average: 47% fewer complaints than a typical year of the XG350 at the same age. It is one of the best XG350 years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2004 Hyundai XG350?
The air bags — 14 complaints, 32% of all complaints for this model year, most often about frontal. Next are the speed control & acceleration (12) and electrical system (6).
How many recalls does the 2004 Hyundai XG350 have?
There is 1 recall for the 2004 Hyundai XG350, the most recent from April 16, 2009 (suspension). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Hyundai XG350?
The best years by complaints, compared at the same age, are 2003 and 2004. Years to avoid or approach with caution: 2005 and 2002. See the full Hyundai XG350 years comparison.
At what mileage do 2004 Hyundai XG350 problems happen?
The median mileage reported in complaints is about 63,000 miles; 47% of problems with a recorded mileage started before 50,000 miles.
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.