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KLUNK
KLUNK

2004 Kia Optima

The Verdict

50 Proceed with Caution

The 2004 Kia Optima has 225 owner complaints filed with NHTSA. The most reported issues are body (125 complaints) and electrical (63 complaints). With a Klunk Score of 50/100, it earns a "Proceed with Caution" rating. If you're shopping for a Kia Optima, consider the 2010 model year which has 69% fewer complaints.

Safe Bet

The 2010 has 69% fewer complaints

View the 2010 Kia Optima dashboard →

50

Klunk Score: Proceed with Caution

About average for complaint volume. Research the specific issues before buying.

How is this calculated?

The Klunk Score ranks this vehicle year against all others in our database based on total owner complaints filed with NHTSA. 100 = fewest complaints (top tier), 0 = most complained-about. Scores above 60 are better than average; below 40 means more problems than most.

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Under the Hood

Each number is a complaint. Darker = bigger problem.

YearBodyBrakesElectricalEngineTransmission
200167832279
2002521227154
200373538226
2004125663247
200573250163
2006530672312
2007347922310
2008306642815
20092014371629
2010123241217
20111383712627017
2012280628844334
20134397311770433
201418723413187
2015213487164912
2016149119945036
2017434261718
201829133014610
2019631820926
2020127101016

By Category

Body
125
Electrical
63
Engine
24
Transmission
7
Brakes
6

By Severity

1
112
2
99
3
4
4
10

Worst Problems

Complaints

Body 2

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 issue. When I contacted KIA, their response was "as my car is not under warranty, they are not required to repair the car" The car in question has 70, 558 miles on it. We are the 2nd owner.

17mo ago
Body 2

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 reports of this on Kia forums and general Google search. There was no warning that this part was wearing out until it became impossible to open the door.

47mo ago
Engine 1

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 VIN was not included. The manufacturer was informed of the failure and confirmed that the vehicle was not included in a recall. The failure mileage was approximately 145,000.

53mo ago
Electrical 1

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

64mo ago
Body 1

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 THE CRUISE CONTROL.

90mo ago
Body 1

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

101mo ago
Electrical 4

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 ATTENTION. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE VEHICLE WAS DESTROYED. THE MANUFACTURER WAS NOT CONTACTED. THE VIN WAS UNKNOWN. THE APPROXIMATE FAILURE MILEAGE WAS 57,000.

103mo ago
Electrical 1

UNABLE TO OPEN PASSENGER DOOR DUE TO DOOR LOCK ACTUATOR STOPPED WORKING. UNSAFE TO DRIVE.

104mo ago
Body 1

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. THE CONTACT WAS INFORMED THAT THE FRAME WOULD NEED TO BE REPLACED, BUT NO REPAIRS WERE MADE. SINCE WINTER WAS APPROACHING, THE CONTACT WAS CONCERNED THAT THE FRAME WOULD COMPLETELY CRACK DUE TO THE WEATHER AND SALTED ROADWAYS IN HER STATE. THE CONTACT RECEIVED A MANUFACTURER RECALL AND EXTENDED WARRANTY NOTICES IN 2009. THE VEHICLE WAS TAKEN TO THE DEALER, BUT NO ISSUES WERE FOUND. THE DEALER SENT PICTURES OF THE CRACKED FRAME TO THE MANUFACTURER. THE MANUFACTURER WAS NOTIFIED AND ISSUED CASE NUMBER: 2560103. THE MANUFACTURER STATED THAT THEY WOULD CONTACT THE LOCAL DEALER. THE CONTACT WAS AWAITING A CALL BACK FROM THE MANUFACTURER AND DEALER. THE FAILURE MILEAGE WAS APPROXIMATELY 48,000.

105mo ago
Body 1

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 EMERGENCY. THIS IS VERY COMMON IN KIA OPTIMA MODELS.

112mo ago
Body 2

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.

113mo ago
Body 2

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: 09V183000 (SUSPENSION) AS A POSSIBLE SOLUTION TO THE FAILURE; HOWEVER, THE VIN WAS NOT INCLUDED. THE FAILURE MILEAGE WAS APPROXIMATELY 57,000. ..UPDATED 05/05/17 *BF *CN

114mo ago
Engine 2

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 LATER TOWED TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE TIMING BELT FRACTURED AND THE ENGINE NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE, BUT DID NOT OFFER ANY ASSISTANCE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 163,000.

114mo ago
Electrical 3

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

115mo ago
Body 1

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 FAILED TO REPAIR THE VEHICLE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 178,000.

115mo ago
Body 2

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 WAS 101,000.

116mo ago
Body 1

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 WAS AN ISSUE. RIGHT NOW IT IS INCONVENIENT TO CLIMB OVER THE CENTER CONSOLE. I SEE THIS IS NOT THE FIRST COMPLAINT ON THIS SUBJECT AND THE PROBLEM SEEMS ENDEMIC TO THIS CAR. THE PROBLEM STARTED INTERMITTENTLY FROM SEPTEMBER 2016 AND NOW IS PERMANENT AS OF NOVEMBER 30.

117mo ago
Electrical 2

AIR BAG LIGHT ON DASHBOARD STAYS ON, STARTED TWO DAYS A GO.

118mo ago
Body 1

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 CARJACKING. INTERNET RESEARCH SHOWS THIS TO BE A COMMON ISSUE AROUND 100K MILES. THIS SHOULD BE A RECALL EVENT...

119mo ago
Electrical 2

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

120mo ago

225 total

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