Most common 2006 Kia Optima problems
Share of the 155 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Kia Optima complaints by model year
Best Optima years: 2010, 2009, 2008. Years to avoid: 2013, 2015, 2012, 2016, 2011. Compare all years →
2006 Kia Optima recalls (2)
Air bags › Frontal
Kia motors America, inc. (Kia) is recalling certain model year 2006-2008 Kia optima vehicles manufactured from September 29, 2005, through January 29, 2008, and model year 2007 and 2008 Kia rondo vehicles manufactured from September 13, 2006, through March 21, 2008.
Remedy: Kia will notify owners, and dealers will replace the vehicle's air bag clock spring contact assembly, free of charge. The safety recall began on July 11, 2012.
Power train › Automatic transmission › Lever and linkage › Column shift
Kia is recalling certain model year 2006-2008 optima vehicles manufactured from September 29, 2005, through June 13, 2007. There is a possibility that the shift cable May have been installed incorrectly, causing tension in the cable.
Remedy: Dealers will inspect the shift cable and reinstall if necessary free of charge. The safety recall began on March 23, 2011. Owner May contact Kia at 1-800-333-4542.
NHTSA defect investigations
Federal safety investigators have looked into 3 possible defects involving the 2006 Kia Optima:
Transmission Shift Cable Detachment
During manufacture the automatic transmission shift cables in certain subject vehicles were installed incorrectly causing extra tension on the cable.This condition can cause the shift cable to detach from the gear shifter assembly's dowel pin preventing the transmission from being shifted.The shift lever can be moved into the Park (P) position while the vehicle transmission is still in the last used gear before…
Loss of Motive Power
The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021.
Throttle control system vulnerabilities
The Office of Defects Investigation (ODI) of the National Highway Traffic Safety Administration (NHTSA) received a petition letter dated October 10, 2021, requesting an investigation of possible defects in the electronic throttle control (ETC) system on certain Kia vehicles resulting in the opening of DP21-003.
What 2006 Kia Optima owners say
Air bags all 46 →
Airbag- we started the car up and the airbag light came on and has not went off (other than when the car is shut down). After research discovered that an airbag failure was part of a recall for this model, but only for Optima's manufactured from sept 2005 forward. This one was manufactured a few weeks prior, yet has the same problem. After a google search, the issue can be found on Optima's with a manufacture date as far back as April of 2005. The recall needs to be expanded to all 2006 models. Driver door locks- when the door is locked, it will not unlock without a lot of playing with the fob or using key and 'getting lucky' to grab the handle at the correct time while doing so, otherwise it locks back immediately upon pulling the handle. This is a safety issue on 2 levels. …
I purchased my 2006.5 Kia Optima on November 6, 2014. Before my test drive the air bag light illuminated but then turned off, I said something to the dealership (not a Kia dealer) and they diagnosed it and told me it was the airbag module and that they would order a new one and replace it free of charge. After waiting 3 months for the new module to come in, I did some research and found that the 2006-2008 Kia Optima's have an air bag recall, so I contacted a Kia dealership and was told that my car was not part of the recall and that if I wanted them to look at my car at all it would be $99 plus the hourly fee (I don't even wanna know what yhr hourly fee is). But since my car falls in that year range and is having the airbag issue, should it be Kia's responsibility to investigate and if needed, correct the problem?
Locks & latches all 27 →
Hood released while in motion, folded back over windshield and roof top totally blinding driver while in motion. Vehicle was in motion, traveling south on nc hwy 16 at a rate of 50 MPH, two lane road. Hood released and flew up, no known cause or effect. Hood release and/or safety latch obviously released without cause or warning.
The driver side door will not open either by key or by the remote control. This began randomly a few weeks ago, and would open if we jiggled the key a certain way. We could not lock the car since we didn't know if we could get it open again. We both work full time and are an hour away from a Kia dealer. On thanksgiving day, it was accidentally locked and we haven't been able to get it open since. As a result, my husband, age 63 and I, age 62 have to crawl in through the passenger door, over the center console. The Kia dealer contacted will not replace this at no charge, it will cost $200 just to be able to get into our car! It is past the bumper to bumper warranty and the customer service 800 number said it would be up to the district manager to fix it at no cost. The service dept. Tells me that there have been other complaints and knows which part to order without even seeing the car. …
Electrical system all 23 →
Airbag- we started the car up and the airbag light came on and has not went off (other than when the car is shut down). After research discovered that an airbag failure was part of a recall for this model, but only for Optima's manufactured from sept 2005 forward. This one was manufactured a few weeks prior, yet has the same problem. After a google search, the issue can be found on Optima's with a manufacture date as far back as April of 2005. The recall needs to be expanded to all 2006 models. Driver door locks- when the door is locked, it will not unlock without a lot of playing with the fob or using key and 'getting lucky' to grab the handle at the correct time while doing so, otherwise it locks back immediately upon pulling the handle. This is a safety issue on 2 levels. …
I have an 06 Optima (06.5/ ms) 2.4 engine but the problem im having juging from Kia internet forums is spread acros meney years and models it is an intermitant engine stall it can happen at any time ive had it happen at 65mph on interstate this is followed by a series of start stall then it will run fine for a while ive had a complete wire harness check reaced several sensors and other parts nothing has cured the problem it should be recalled and repaired by Kia before some one gets hurt not after.this is a totally random happening
2006 Kia Optima engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.4L 4-cyl | 5-speed manual | FWD | 21 / 31 / 25 |
| 2.4L 4-cyl | 5-speed automatic | FWD | 21 / 31 / 25 |
| 2.7L 6-cyl | 5-speed automatic | FWD | 20 / 28 / 23 |
| 2.4L 4-cyl | 4-speed automatic | FWD | 19 / 28 / 22 |
| 2.7L 6-cyl | 4-speed automatic | FWD | 18 / 25 / 21 |
EPA ratings. Class: Midsize car.
Frequently asked questions
Is the 2006 Kia Optima a good car?
Based on 155 owner complaints filed with NHTSA, the 2006 Optima rates average: about as many complaints as a typical year of the Optima at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2006 Kia Optima?
The air bags — 46 complaints, 30% of all complaints for this model year, most often about frontal › sensor/control module. Next are the locks & latches (27) and electrical system (23).
How many recalls does the 2006 Kia Optima have?
There are 2 recalls for the 2006 Kia Optima, the most recent from January 17, 2012 (frontal). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Kia Optima?
The best years by complaints, compared at the same age, are 2010, 2009 and 2008. Years to avoid or approach with caution: 2013, 2015, 2012, 2016 and 2011. See the full Kia Optima years comparison.
At what mileage do 2006 Kia Optima problems happen?
The median mileage reported in complaints is about 62,000 miles; 41% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.