2005 Kia Optima

Reliability, what owners report, and what it costs to keep.

71/100

Worth a look

AVOIR's read: a solid ownership case with specific caveats below.

What owners actually report

Owners have filed 144 complaints with NHTSA about the 2005 Kia Optima, and it carries no recalls. These are owner allegations rather than confirmed defects, but the pattern of what people complain about is the most useful signal a used buyer has.

Complaints by area, from NHTSA records for this model-year
Area	Complaints	Share
Latches/locks/linkages	48	33%
Air bags	18	13%
Structure	13	9%
Electrical system	10	7%
Fuel system	9	6%
Engine and engine cooling	6	4%
Electrical system	5	3%
Electrical system	5	3%
Unknown or other	4	3%
Structure	3	2%

In owners' own words

Verbatim from NHTSA complaint records, trimmed for length.

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
NHTSA complaint: Latches/locks/linkages

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 t
NHTSA complaint: Structure

THE DRIVER DOOR BECOME JAMMED AND SOMETIMES WILL NOT OPEN. YOU HAVE TO CONTINUOUSLY/EXCESSIVELY JERK ON IT. DUE TO NOT OPENING, I HAVE TO CRAWL THROUGH THE PASSENGER SIDE DOOR IN ORDER TO GAIN ENTRANCE INTO THE VEHICLE.
NHTSA complaint: Structure

TL* THE CONTACT OWNS A 2005 KIA OPTIMA. WHILE ATTEMPTING TO EXIT THE VEHICLE, THE DOOR'S FAILED TO UNLOCK. THE CONTACT HAD TO EXIT THROUGH THE SUN ROOF. THE CONTACT ALSO STATED THAT HE WAS ABLE TO UNLOCK THE FRONT PASSEN
NHTSA complaint: Latches/locks/linkages

DRIVERS SIDE DOOR LOCKING MECHANISM MALFUNCTION. MECHANISM WILL NOT ALLOW THE DOOR TO UNLOCK, THEREFORE THE DOOR CAN NOT BE OPENED. DRIVER MUST CLIMB OUT OF PASSENGER SIDE.
NHTSA complaint: Structure

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 T
NHTSA complaint: Electrical system

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 S
NHTSA complaint: Air bags

I AM A DISABLED WOMAN WHO BECAME TRAPPED IN HER OWN CAR BECAUSE THE LOCK MECHANISM ON THE DOOR WOULD NOT OPEN NOR COULD I ROLL DOWN THE WINDOW. THIS IS UNACCEPTABLE. I TRIED TO CLIMB OVER THE GEARSHIFT TO TRY THE PASSENG
NHTSA complaint: Electrical system

The seven scores

Reliability raw	73	good
Longevity est.	75	good
Maintenance	83	excellent
Depreciation	82	excellent
Performance	49	below average
Efficiency	41	below average

How it compares in its class

Percentile ranks against other midsize & large cars in the catalog.

Reliability: better than 28% of midsize & large cars
Longevity: better than 38% of midsize & large cars
Running costs: better than 78% of midsize & large cars
Value retention: better than 84% of midsize & large cars

Which of these numbers are measured

What stands behind each score for this car:

Reliability 73: from NHTSA recalls and complaints. This one is a raw count: we do not have a sales figure for this model, so a high-volume car looks worse here than it should.
Longevity 75: an estimate from powertrain and brand record. No 200,000-mile population exists for a 2005 car yet, so this is a prior, not evidence.
Maintenance 83: repair-cost data where we have it for this model, otherwise a mechanical-complexity estimate from engine size, cylinder count and drivetrain.
Safety: no score. NHTSA crash testing thins out for older vehicles and we would rather show nothing than guess.

Common questions

What goes wrong with the 2005 Kia Optima?

Owners have filed 144 complaints with NHTSA for this model-year, and latches/locks/linkages is the most reported area with 48 of them (33%). No recalls are on record for it.

Is the 2005 Kia Optima reliable?

AVOIR scores its reliability 73/100 (good) from NHTSA recall campaigns and complaint density. That figure is a raw complaint count, not yet adjusted for sales volume, so a high-volume model scores worse than it deserves.

How long will a 2005 Kia Optima last?

AVOIR scores its longevity 75/100, but that figure is an estimate built from the powertrain and the brand's record, not a measurement. A 2005 car has no 200,000-mile population to observe yet, so treat it as a prior rather than evidence.

Should I buy a 2005 Kia Optima?

AVOIR's read: worth a look, because a solid ownership case with specific caveats below. Its overall ownership score is 71/100. Condition, mileage and service history still matter more than any score, so get a pre-purchase inspection on the specific car.

Sources: NHTSA recalls and complaints, EPA fuel economy, IIHS awards, and live market listings. A score describes a model-year, not the individual car in front of you. Get a pre-purchase inspection.