Problems · NHTSA complaints

2004 Hyundai XG 350 problems

Owners filed 91 complaints about the 2004 Hyundai XG 350 with NHTSA between Nov 2003 and May 2024. The most-cited component is vehicle speed control (22).

Complaints
91
Filed with NHTSA
Crashes
16
Reported by owners
Fires
4
Reported by owners
Injuries
5
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Vehicle speed control22
  2. Air bags21
  3. Suspension14
  4. Structure12
  5. Service brakes, hydraulic10
  6. Electrical system8
  7. Engine5
  8. Power train5
  9. Steering4
  10. Engine and engine cooling4
  11. Service brakes3
  12. Fuel/propulsion system2
  13. Wheels2
  14. Exterior lighting2

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Data from NHTSA Complaints API · synced Oct 28, 2026NHTSA vehicle page
02 —Trend

When complaints were filed

Does it get worse with age? Complaints per calendar year filed
View as table
Model yearComplaints filed per calendar year
20032
20044
200511
200613
20073
20082
20095
20106
20114
20123
20134
20148
20157
20164
20176
20182
20194
20200
20210
20221
20231
20241

Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.

03 —Owner reports

Top problems in owners’ words

Verbatim from NHTSA complaints, newest first

Vehicle speed control

22 reports11 crashes
“UNINTENDED ACCELERATION. WE HAVE REPORTED THIS DEFECT TO HYUNDAI DEALERS AND CORPORATE OFFICE TO NO AVAIL. U.S. TRANSPORTATION SECRETARY RAY LAHOOD, MARCH 2010, ANNOUNCED TWO MAJOR INVESTIGATIONS DESIGNED TO ANSWER SAFETY ISSUES OF UNINTENDED VEHICLE ACCELERATION FOR ALL MANUFACTURES. WHAT HAVE YOU AT NHTSA IDENTIFIED AND ADDRESSED AS POTENTIAL VEHICLE-RELATED CAUSES OF UNINTENDED ACCELERATION?”
Owner complaint to NHTSAFiled Dec 17, 2017Vehicle speed controlODI 11055116

Air bags

21 reports4 crashes
“AIRBAG LIGHT CAME ON IN 2011 AND WAS TOLD ENTIRE SEAT HAD TO BE REMOVED TO STOP LIGHT. COULD NOT AFFORD THE COST. RETURNED TO DEALER AGAIN IN 2014 AS HAD READ CONNECTOR UNDER SEAT MIGHT BE DISCONNECTED WHICH COULD BE CAUSING THE PROBLEM AND DEALER FOUND THIS TO BE TRUE AND SECURED THE CONNECTED AND THE LIGHT WENT OUT; HOWEVER, WITHIN FEW WEEKS, LIGHT CAME BACK ON AND HAS REMAINED ON SINCE. I DID NOT ASK THE DEALER ABOUT IT AGAIN, KNOWING I WOULD HAVE TO PAY FOR A MAJOR TAKE-OUT OF THE SEAT TO CORRECT. OVERALL, THE LIGHT HAS BEEN ON FOR AT LEAST 5 YEARS. I AM THE ORIGINAL OWNER. THE LIGHT CAME ON BEFORE MILEAGE WAS 51,131 AND MILEAGE IS CURRENTLY 83,486. I COVER THE LIGHT WITH ELECTRICAL TAPE AS IT DISTURBS ME THAT I CAN'T GET IT EASILY FIXED. I DOUBT IF THE AIRBAGS WORK BUT DON'T KNOW FOR SURE AND PROBABLY WON'T UNLESS I HAVE AN ACCIDENT OR A RECALL IS MADE FOR THE DEALER TO FIX THE PROBLEM.”
Owner complaint to NHTSAFiled May 24, 2016Air bagsODI 10870477

Suspension

14 reports1 crash1 fire
“vehicle has a front rusted subframe in two spots on passenger side it will not pass inspection. it is Dangerous to keep driving it it looks like there is a recall on this issue in 04/2009, but it says 0 unrepaired recalls which is obviously not correct Manufacturer: HYUNDAI MOTOR COMPANY Mfr's Report Date: APR 14, 2009 NHTSA CAMPAIGN ID Number: 09V124000 EA08016 NHTSA Action Number: EA08016”
Owner complaint to NHTSAFiled Feb 6, 2023Suspension, Structure, Unknown or otherODI 11505836

Structure

12 reports1 fire
“THERE IS VISIBLE RUST/CORROSION DAMAGE OF THE FRONT SUB- FRAME OF MY VEHICLE. THE FRONT SUBFRAME HAS THINNED AT RUSTED LOCATION. THE RUSTED SUB-FRAME IS CHEWED HALF OF MY SUB-FRAME. I AM WORRIED THAT CORROSION MAY PROGRESS AND MAY DETACH FROM THE SUB-FRAME, EVENTUALLY INCREASING SAFETY RISK. I HAVE NOTICED STEERING PULL.”
Owner complaint to NHTSAFiled Sep 7, 2019StructureODI 11253914

Service brakes, hydraulic

10 reports2 crashes1 fire
“TL* - THE CONTACT OWNS A 2004, HYUNDAI XG350. THE CONTACT STATED THAT A NUMBER OF TIMES WHEN HE APPLIED THE BRAKES THE VEHICLE ACCELERATED. THE CONTACT STATED THAT ON 02/16/2007 WHEN HE APPLIED THE BRAKES THE VEHICLE KEPT ACCELERATING AND HE HIT THE VEHICLE IN FRONT OF HIM. THE VEHICLE STRUCK THE BUMPER OF THE SECOND VEHICLE AND THERE WAS NO DAMAGE, A POLICE REPORT WAS NOT FILED. THE CONTACT STATED THAT THE ROADS WERE SLICK AND WET AND HE WAS GOING UPHILL. THE CONTACT STATED THAT THERE WAS SLUSH ON THE ROAD, AND HE WAS SLOWING DOWN FOR A TURN DOING 5 MPH. THE CONTACT STATED THAT MECHANIC BELIEVED THE FAILURE WAS IN THE COMPUTER THAT CONTROLS HOW MUCH GAS FLOWS INTO THE ENGINE. THE CURRENT AND FAILURE MILEAGE WERE BOTH 30000. *AK”
Owner complaint to NHTSAFiled Feb 16, 2007Service brakes, hydraulic, Vehicle speed controlCrash reportedODI 10182753

Electrical system

8 reports1 fire
“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.”
Owner complaint to NHTSAFiled Jan 27, 2015Power train, Electrical systemODI 10679287
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.