Problems · NHTSA complaints

2004 Hyundai Elantra problems

Owners filed 182 complaints about the 2004 Hyundai Elantra with NHTSA between Feb 2004 and Feb 2024. The most-cited component is air bags (114).

Complaints
182
Filed with NHTSA
Crashes
24
Reported by owners
Fires
2
Reported by owners
Injuries
26
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Air bags114
  2. Seat belts12
  3. Engine and engine cooling11
  4. Suspension7
  5. Vehicle speed control7
  6. Power train7
  7. Service brakes, hydraulic6
  8. Electrical system6
  9. Engine5
  10. Steering5
  11. Child seat4
  12. Seats3
  13. Fuel/propulsion system3
  14. Structure3

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 Nov 10, 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
200467
200531
200613
20078
20087
20090
201011
201110
20125
20133
20143
20159
20162
20175
20185
20192
20200
20210
20220
20230
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

Air bags

114 reports22 crashes3 related recalls
“VEHICLE 2004 HYUNDAI INVOLVED IN ACCIDENT ON THE STREET, THIS VEHICLE OWNER WAS BELTED WHEN THE ACCIDENT OCCURRED, THE AIRBAGS DEPLOYED, THIS VEHICLE OWNER SUSTAINED SEVERE INJURIES INCLUDING FRACTURED VERTEBRATE OF LUMBAR 1 AND 2 AND FRACTURED RIBS, NOTE NO OTHER VEHICLE WAS INVOLVED, THIS VEHICLE OWNER SIDE SWIPED A TREE AND SUSTAINED MINIMAL DAMAGE TO THE FRONT END, THIS VEHICLE OWNER WAS TREATED AT THE SCENE, TRANSPORTED TO THE EMERGENCY ROOM WAS HOSPITALIZED FOR 7 DAYS; CURRENTLY, RECEIVING OUT PATIENT CARE WITH SCHEDULED MEDICAL APPOINTMENTS, THIS VEHICLE OWNER IS NOT CLEARED TO RETURN TO WORK AT THIS TIME, AND FOR AT LEAST 9 WEEKS. THE FAULTY AIRBAGS FAILED TO KEEP THIS DRIVER SAFE, AND SEVERELY INJURED HIM. HE SUFFERED 2 BROKEN BACK BONES, A BROKEN RIB, SCRAPES AND BRUISES. ON TOP OF THE PHYSICAL TRAUMA, HE AND HIS FAMILY, WIFE AND TWO DAUGHTERS, ARE SUFFERING FROM EMOTIONAL TRAUMA. THE ACCIDENT IN ITSELF, SHOULD NOT HAVE CAUSED THIS PHYSICAL TRAUMA, THE CAR DID NOT FLIP, TURN OVER, OR IMPACT ANY OTHER VEHICLES. THE DRIVER WAS NOT ON A HIGHWAY, BUT A COMMON STREET, SO HE WAS NOT TRAVELING OVER 40 MPH. THE INJURIES SUSTAINED ARE A DIRECT RESULT OF THE…”
Owner complaint to NHTSAFiled Jun 14, 2019Air bagsCrash reportedODI 11220188

Seat belts

12 reports2 crashes
“I HAVE CONTACTED CUSTOMER CARE AND WAS TOLD IT'S STANDARD TO REMOVE A FRONT SEAT AND GIVE THE CAR BACK UNTIL THEY GET PARTS FOR THE RECALL I FEEL THIS COULD CAUSE AIR BAG SYSTEMS NOT TO BE ACTIVE AND ALSO WITHOUT THE SEAT THE CARS ABILITY TO HOLD UP IN A CRASH IS REDUCED DUE TO MISSING COMPONENTS THAT PROVIDE SOME STRUCTURAL SUPPORT ALL I HAVE REQUESTED WAS A RENTAL CAR FOR THE TIME IT TAKES TO PERFORM MY RECALL AS I DO NOT FEEL SAFE DRIVING A CAR WITHOUT A FRONT SEAT I HAVE HAD THE DEALER DECLINE MY REQUEST AND SAID IF I WANT IT DONE THE SEAT WILL BE REMOVED AND THE CAR GIVEN BACK TO ME IS THIS A SAFE PRACTICE FOR A DEALER TO REMOVE A SEAT THAT HAS ONE OF THE SIDE AIR BAGS IN IT AND ADVISE THE OWNER TO DRIVE THE CAR AS NORMAL? ANY ASSISTANCE WITH THIS COMPANY WILL BE MUCH APPRECIATED AND TO BE CLEAR THERE IS A ACTIVE AIR BAG LIGHT ON WITH A CODE THE RELATES TO OCCUPANCY DETECTION FOR PASSANGER FRONT AND SIDE AIR BAGS”
Owner complaint to NHTSAFiled Jun 25, 2018Air bags, Seat belts, SeatsODI 11103705

Engine and engine cooling

11 reports1 crash1 fire
“TL* THE CONTACT OWNS A 2004 HYUNDAI ELANTRA. THE CONTACT STATED THAT SMOKE EMITTED FROM THE ENGINE WHILE DRIVING 30 MPH. THE VEHICLE WAS MANEUVERED TO THE SHOULDER AND THE CONTACT NOTICED THAT OIL WAS LEAKING FROM THE ENGINE. THE VEHICLE WAS TOWED TO AN INDEPENDENT MECHANIC AND THE CONTACT WAS INFORMED THAT A CRANK SHAFT SEAL NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED AFTER DRIVING APPROXIMATELY 100 MILES. THE VEHICLE WAS TOWED BACK TO THE MECHANIC AND THE CONTACT WAS INFORMED THAT A HEAD GASKET WAS BLOWN. THE VEHICLE WAS THEN TOWED TO AN AUTHORIZED DEALER AND THE CONTACT WAS INFORMED THAT THE ENGINE NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND OFFERED NO ASSISTANCE. THE FAILURE MILEAGE WAS 86,000. THE VIN WAS UNAVAILABLE.”
Owner complaint to NHTSAFiled Nov 25, 2011Engine and engine coolingFire reportedODI 10437243

Suspension

7 reports1 crash
“Rapid rusting of rear subframe cross member. Car rarely gets driven in snow or even bad weather. Went from minimal signs of rust to looking pretty rotted within the past year. Saw recalls on similar Hyundai vehicles. Maybe possible the same steel was used, or same lack of corrosion preventative.”
Owner complaint to NHTSAFiled Feb 1, 2024Suspension, Unknown or otherODI 11569185

Vehicle speed control

7 reports
“TL* THE CONTACT OWNS A 2004 HYUNDAI ELANTRA. WHILE DRIVING VARIOUS SPEEDS, THE THROTTLE POSITIONING SENSOR FAILED ON MORE THAN ONE OCCASION. UPON DECELERATION, THE VEHICLE ACCELERATED WITHOUT WARNING. THE CONTACT DEPRESSED THE BRAKE PEDAL AND THE VEHICLE ACCELERATED RAPIDLY. IN ADDITION, THE CONTACT DESCRIBED THE BRAKE PEDAL AS HAVING A "DEAD SPOT", THUS THE VEHICLE ACCELERATED ON ITS OWN AFTER THE BRAKE PEDAL WAS DEPRESSED. ON ONE OCCASION, THERE WAS AN INCREASE IN THE RMPS THAT WAS DIRECTLY RELATED TO THE WORN POSITION SENSOR. THE CONTACT INDEPENDENTLY REPLACED THE POSITIONING SENSOR. MILLENNIUM HYUNDAI (265 NORTH FRANKLIN ST, HEMPSTEAD, NY 11550) WAS MADE AWARE OF THE FAILURE AND ACKNOWLEDGED THE FAILURES. THE VEHICLE WAS NOT DIAGNOSED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURES. THE FAILURE MILEAGE WAS 105,000.”
Owner complaint to NHTSAFiled Jul 25, 2018Vehicle speed control, EngineODI 11113543

Power train

7 reports
“KNOCKING SOUND STARTED IN RIGHT FRONT WHEN TURNING RIGHT. NOT MUCH BUT PROGRESSIVELY LOUDER & LONGER ON ALL TURNS. THE FRONT TRANSAXLE SHAFT BASICALLY WENT OUT AND HAD TO BE REPLACED ALONG W THE BALL JOINTS IN FRONT END.5 SPEED *TR”
Owner complaint to NHTSAFiled Apr 30, 2011Suspension, Power trainODI 10398375
Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 10, 2026

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