2004 KIA OPTIMA Problems
Real NHTSA owner complaints for the 2004 Kia Optima. This model year has 225 NHTSA complaints — top issue: Door Lock Issues.
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This page shows the model year's reputation. The VIN tells you about the specific car — accidents, title issues, odometer rollbacks, and open recalls.
Worst 2004 Kia Optima Problems
Top 3 most-reported issues with average mileage at failure.
Door Lock Issues
Electrical Faults
Structural Problems
Considering a 2004 Kia Optima?
This page shows the model year's reputation. The VIN tells you about this specific car — accidents, title issues, odometer fraud. Full report just $4.99 (vs. Carfax $44.99).
All Problems by Category
Every NHTSA complaint category for the 2004 Kia Optima. A single complaint may appear in multiple categories.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Door Lock Issues | 81 | — | — | — | |
| Electrical Faults | 45 | 2 | 3 | — | |
| Structural Problems | 42 | 1 | — | — | |
| Airbag Malfunctions | 26 | 3 | — | — | |
| Suspension Failures | 19 | 1 | — | — | |
| Engine Problems | 14 | — | — | — | |
| Uncategorized Issues | 12 | — | — | — | |
| Fuel System | 9 | — | — | — | |
| Gasoline | 9 | — | — | — | |
| Transmission / Drivetrain | 8 | 1 | — | — | |
| Steering Defects | 7 | 1 | — | — | |
| Brake System | 7 | 1 | — | — | |
| Seat Belt Issues | 6 | — | — | — | |
| Unintended Acceleration | 5 | 1 | — | — | |
| Headlight/Taillight Failures | 5 | — | — | — | |
| Hydraulic | 5 | — | — | — | |
| Wheel Issues | 4 | 1 | — | — | |
| Equipment | 3 | — | — | — | |
| Tire Issues | 3 | — | — | — | |
| Electronic Stability Control (Esc) | 2 | — | — | — | |
| Equipment Adaptive/Mobility | 2 | 1 | 1 | — | |
| Lane Departure | 1 | — | — | — | |
| Seat-Related Issues | 1 | — | — | — | |
| Fuel/Propulsion System | 1 | 1 | — | — | |
| Visibility | 1 | — | — | — |
Source: NHTSA Complaints Database. Complaint counts may exceed total complaints because one report can span multiple categories.
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2004 Kia Optima. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Showing 225 most recent complaints
Had some noise coming from the front of the car, had my mechanic look at it, he said we needed a control arm. When he took off the cover to replace the control arm, he found the sub frame had rotten and was cracking. As I looked online, I saw that KIA had a recall for this iss…
Door lock/unlock mechanism has failed. Unable to unlock and open door from outside or inside. This defect causes the door to stay locked and unable to open. This can trap people inside of the car if they are unable to crawl out a window or exit from another door. There are many r…
The contact owns a 2004 Kia Optima. The contact stated that after refueling, the vehicle would not start. The vehicle was not taken to a local dealer. Upon investigation, the contact associated the failure with NHTSA Campaign Number: 04V180000 (Fuel System, Gasoline) however, the…
I WAS REPAIRING BRAKELINES, WHILE OBSERVING UNDER CARRIAGE I NOTICED SUSPENSION RUST, FRAME. LOOKED UP RECALLS AND THIS IS ONE. I INCLUDED SCREENSHOT OF PROOG
WHILE DRIVING ON A HIGHWAY WITH CRUISE CONTROL ACTIVE, I WAS UNABLE TO TURN OFF THE CRUISE CONTROL WITH THE STEERING WHEEL CONTROL BUTTONS. THE CANCEL AND SET BUTTONS HAD NO EFFECT WHEN PRESSED. THE CAR REMAINED TRAVELING AT THE SET SPEED. TAPPING ON THE BRAKE PEDAL DID CANCEL TH…
WHILE STATIONARY - DRIVER'S SIDE DOOR WILL NOT OPEN FROM INSIDE OR OUTSIDE WITH KEY, MANUAL LOCK OR ELECTRONIC LOCK CONTROLS (STUCK CLOSED). UNABLE TO EVACUATE CAR FROM DRIVER'S SIDE. SAFETY CONCERN - LACK OF EGRESS
TL* THE CONTACT OWNED A 2004 KIA OPTIMA. WHILE DRIVING 25 MPH, ANOTHER VEHICLE CRASHED INTO THE CONTACT'S VEHICLE FROM THE FRONT. THE PASSENGER SIDE AIR BAGS FAILED TO DEPLOY. A POLICE REPORT WAS FILED. THE CONTACT SUSTAINED STOMACH AND CHEST INJURIES THAT REQUIRED MEDICAL ATTENT…
UNABLE TO OPEN PASSENGER DOOR DUE TO DOOR LOCK ACTUATOR STOPPED WORKING. UNSAFE TO DRIVE.
TL* THE CONTACT OWNS A 2004 KIA OPTIMA. WHEN THE VEHICLE WAS TAKEN TO BILL DORATY KIA (2925 MEDINA RD, MEDINA, OH 44256, (330) 721-9500) FOR ROUTINE BRAKE SERVICE, THE TECHNICIAN FOUND A CRACK IN THE FRONT FRAME. THE DEALER STATED THAT THE VEHICLE WAS SAFE TO DRIVE AT THAT TIME. …
DRIVER DOOR DOES NOT OPEN FROM INSIDE NOR FROM OUTSIDE. WHEN UNLOCKING THE DOORS, ALL DOORS WILL OPEN EXCEPT THE DRIVER'S DOOR. CENTER LOCK MECHANISM OR MANUAL USE OF KEYS DOES NOT HELP. THIS IS WITHOUT A DOUBT A SAFETY PROBLEM WHERE DRIVER CAN BE TRAPPED IN THE CAR IN CASE OF EM…
CANNOT ADD FUEL BECAUSE THE PUMP STOPS FROM FILLING UP THE TANK. IT TOOK ME ABOUT 7 TIMES TO GET IN $7 WORTH OF GAS. EVEN THOUGH THIS CAR ONLY HAS 25,830 MILES ON IT. IT HAS HARDLY BEEN USED. WE PUT GAS IN ABOUT EVERY 3 OR 4 WEEKS - NOT THAT OFTEN.
TL* THE CONTACT OWNS A 2004 KIA OPTIMA. THE CONTACT STATED THAT THE VEHICLE FAILED INSPECTION DUE TO SEVERE CORROSION OF THE SUBFRAME. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE CONTACT REFERENCED NHTSA CAMPAIGN NUMBER: 09V18300…
TL* THE CONTACT OWNS A 2004 KIA OPTIMA. WHILE DRIVING APPROXIMATELY 20 MPH, THE VEHICLE LOST POWER AND SEVERAL INDICATORS ILLUMINATED ON THE INSTRUMENT PANEL. THE VEHICLE SHUT DOWN AND WAS PUSHED TO THE SIDE OF THE ROAD WITH THE HELP OF THE STATE HIGHWAY PATROL. THE VEHICLE WAS L…
THE AIR BAG WENT OFF WHILE MY WIFE WAS REACHING FOR HER SEAT BELT AND SCRAPPED AND BURNED HER ARM. IT SOUNDED LIKE A GUN GOING OFF. I RUSHED HER HOME AND TOOK CARE OF HER WOUNDS
TL* THE CONTACT OWNS A 2004 KIA OPTIMA. THE CONTACT HEARD AN ABNORMAL LOUD SOUND FROM THE VEHICLE WITHOUT WARNING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT DEALER WHERE IT WAS DIAGNOSED THAT THE FRAME FAILED. THE VEHICLE WAS SERVICED PER AN UNKNOWN RECALL; HOWEVER, THE REMEDY FAIL…
TL* THE CONTACT OWNS A 2004 KIA OPTIMA. THE CONTACT STATED THAT THE DRIVER'S SIDE DOOR FAILED TO UNLOCK. THE CONTACT WAS ABLE TO GAIN ACCESS AFTER SEVERAL ATTEMPTS. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE …
DRIVER'S DOOR LOCKING SYSTEM WILL NOT UNLOCK, ALL OTHERS DO. THE DOOR LOCKS ITSELF IMMEDIATELY AS YOU TRY TO UNLOCK EITHER WITH THE KEY (OUTSIDE) OR PRESSING THE CENTRAL LOCK BUTTON (WHEN INSIDE). THIS WOULD BE A SERIOUS PROBLEM IF THE CAR WAS INVOLVED IN AN ACCIDENT AND/OR FIRE…
AIR BAG LIGHT ON DASHBOARD STAYS ON, STARTED TWO DAYS A GO.
PASSENGER AND DRIVER DOOR LOCKS WILL NOT UNLOCK 85% OF THE TIME, PREVENTING NORMAL ENTRY TO / EXIT FROM THE VEHICLE. MULTIPLE ATTEMPTS USING THE KEY IN THE DOOR LATCH ARE REQUIRED TO GAIN ENTRY THE OTHER 15% OF THE TIME. THIS IS A HUGE SAFETY ISSUE IN CASE OF CRASH, FIRE, OR CA…
MY AIR BAG LIGHT COMES ON THERE'S NO WIRES DISCONNECTED UNDER THE SEAT AND MY SEAT BELTS DO NOT RETRACT WELL ALSO MY DOOR LOCKS ARE GETTING STUCK IN LOCK MODE AND MY ENGINE COMES ON AND THEN GOES OFF.AFTER AWHILE.WHEN IN PARK
Source: NHTSA Complaints Database. Real owner reports for the 2004 Kia Optima.
Recalls for 2004 Kia Optima
1 campaignNHTSA recall campaigns for the 2004 Kia Optima. Recalls are free to fix at any authorized dealer. Run a VIN check below to see if your specific vehicle has open recalls.
2004 Kia Optima — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2004 Kia Optima reliable?▾
Severe Issues. The 2004 Kia Optima has 225 NHTSA owner complaints, 8 crash-related, and 1 recall campaign. The most reported issue is Door Lock Issues (81 complaints). Source: NHTSA via VinSpector AI.
What are the most common problems with the 2004 Kia Optima?▾
#1: Door Lock Issues (81 complaints). #2: Electrical Faults (45 complaints). #3: Structural Problems (42 complaints)
At what mileage do problems start on the 2004 Kia Optima?▾
Mileage data is not available or insufficient for this model year.
How safe is the 2004 Kia Optima?▾
The 2004 Kia Optima has 8 crash-related complaints and 3 fire reports out of 225 total NHTSA complaints. 8 injuries were reported. For NCAP lab crash test star ratings, visit nhtsa.gov/ratings.
Does the 2004 Kia Optima have any recalls?▾
Yes — 1 NHTSA recall campaign affect the 2004 Kia Optima. The largest issue: SUSPENSION:FRONT. Check nhtsa.gov/recalls or run a VIN check to see if your specific vehicle has open recalls.
Should I buy a 2004 Kia Optima?▾
The 2004 Kia Optima has severe issues — review the top problems before buying. Pay particular attention to Door Lock Issues issues. Always run a VIN check on the specific car you're considering to check for accident history, open recalls, and title brands.
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinSpector AI.
Wider context: See the full Kia Optima reliability report with year-by-year comparison.
Check Your Specific 2004 Kia Optima
Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud. Full report just $4.99.