Problems · NHTSA complaints

2005 Kia Optima problems

Owners filed 144 complaints about the 2005 Kia Optima with NHTSA between Jul 2005 and Jun 2022. The most-cited component is latches/locks/linkages (66).

Complaints
144
Filed with NHTSA
Crashes
7
Reported by owners
Fires
1
Reported by owners
Injuries
6
People reported injured
Deaths
0
Reported to NHTSA
01 —By component

Complaints by component

One complaint can cite several components
  1. Latches/locks/linkages66
  2. Electrical system29
  3. Structure22
  4. Air bags22
  5. Fuel system, gasoline9
  6. Engine and engine cooling6
  7. Exterior lighting4
  8. Seat belts3
  9. Power train3
  10. Service brakes, hydraulic2
  11. Steering2
  12. Seats1
  13. Equipment adaptive/mobility1
  14. Fuel/propulsion system1

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 27, 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
20054
20064
20071
200811
200916
201021
201127
20129
201317
201411
201511
20164
20174
20182
20190
20200
20210
20222

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

Latches/locks/linkages

66 reports
“The contact owns a 2005 Kia Optima. The contact was unable to use the key to manually unlock the door to the vehicle. Additionally, the vehicle failed to open consistently from inside the vehicle. Due to the failure, the contact was unable to take the vehicle to the dealer to be diagnosed. The vehicle was not repaired. The manufacturer had not been informed of the failure. The failure mileage was approximately 82,000.”
Owner complaint to NHTSAFiled Jun 22, 2022Latches/locks/linkagesODI 11470536

Electrical system

29 reports1 fire
“AFTER REPAIRING THE MASS AIR FLOW HOSE,PURGE VALVE,AND THE VALVE COVER GASKET. IT DIDN'T PASS THE STATE INSPECTION. I WAS TOLD TO DRIVE IT A LITTLE LONGER TO PUT MILES ON THE CAR. SO I DID.. AFTER SEVEN WEEK GOING BACK TO HAVE IT CHECK IT WAS STILL SHOWING NOT READY. THE MERCHANIC THERE COULDN'T TELL ME WHAT THE PROBLEM AND THEIR SUBJESTED TO TAKE IT TO THE DEALER AFTER PUTTING 1175 MILES ON MY CAR”
Owner complaint to NHTSAFiled Aug 14, 2017Electrical system, Unknown or otherODI 11015035

Structure

22 reports
“driver side door lock does not open using the arm rest switch. wife was in the car could reach the switch but not the unlatch lever . Car was overheating with Ac on with keys in the ignition . Had to have her roll down the passenger door window to manually open the rear passenger side door . From the rear seat I could reach the lever and unlock the door. If I could not it would have been a fire hazard.”
Owner complaint to NHTSAFiled Apr 18, 2022StructureODI 11461246

Air bags

22 reports6 crashes
“THE LIGHT FOR MY AIR BAG HAS BEEN STAYING ON AND MY HORN QUIT WORKING FOR OVER A YEAR NOW. I FINALLY TOOK IT TO THE SHOP FOR THEM TO LOOK AT IT, THEY TOLD ME IT WAS A CLOCK SWITCH (I BELIEVE I SAID THAT RIGHT) WHICH IS SOMETHING IN THE STEERING CONNECTED TO THE AIRBAG AND HORN. I AM CONCERNED THAT THE AIRBAG MIGHT ACTIVATE WHILE I AM DRIVING WHICH WOULD NOT BE GOOD. MAYBE EVEN NOT WORK IF I GET IN A WRECK.”
Owner complaint to NHTSAFiled Jun 22, 2017Air bags, Unknown or otherODI 11000725

Fuel system, gasoline

9 reports
“IN 2011 WE HAD A HOLE FORM IN THE GAS TANK OF OUR 2005 KIA OPTIMA. WE TOOK IT TO A REPAIR SHOP IN WHICH THEY DETERMINED THAT THE STRAPS THAT HOLD THE GAS TANK IN HAD CAUSED WEAR ONTO THE ACTUAL TANK. THEY REPLACED THE TANK WITH NEW GAS TANK (ORIGINAL FACTORY GAS TANK) ON FEBRUARY 7, 2012 THE SAME PROBLEM OCCURRED AND THE VEHICLE HAS BEEN TAKEN BACK IN FOR SERVICING. *TR”
Owner complaint to NHTSAFiled Feb 12, 2012Fuel system, gasolineODI 10447687

Engine and engine cooling

6 reports
“THE CAR WILL RUN FINE, THEN ENGINE WILL START TO MISFIRE. THEN LOSE POWER (PUT THE GAS PETAL TO THE FLOOR AND CAR DOES NOT MOVE AND THE ENGINE DOES NOT REV UP DUE TO THE INCREASED GAS FLOW.) THE ENGINE WILL SHUTTER AND TURN OFF. LE IT SIT FOR 5 TO 10 MINUTES AND THE CAR WILL START. THE CAR WILL DRIVE FOR ANOTHER 5-10 MINUTES AND SHUT OFF AND WILL NOT RUN FOR START FOR SEVERAL MINUTES AND WILL NOT DRIVE BEYOND COUPLE HUNDRED FEET. WE HAVE REPLACED THE CAM SENSOR, CRANK SENSOR, EGR VALVE, SPARK WIRES, SPARKS, COIL PACKS, WATER PUMP, ALL BELTS, ALTERNATOR, BATTERY, AND SHORT BLOCK REBUILD (WARRANTY WORK). THE CODE WAS THE FIRST TIME WAS MISFIRE IN 1 AND 4 CYDERS, AFTER THE REBUILD THE CODE IS MISFIRE 2 AND 3 CYDERS. WE HAVE THE COMPUTER REPROGRAMMED TWICE. THE DEALERSHIP HAVE NO CLUE. *TR”
Owner complaint to NHTSAFiled Oct 21, 2011Engine and engine coolingODI 10432365
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 27, 2026

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