Most common 2008 Kia Optima problems
Share of the 144 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 →
2008 Kia Optima recalls (3)
Exterior lighting › Brake lights › Switch
Kia Motors Corporation (Kia) is recalling certain model year 2007-2010 Rondo, model year 2007-2011 Sedona, Sorento and Sportage, model year 2010-2011 Soul, model year 2008-2011 Optima, model year 2010 Forte, model year 2007-2009 Amanti, and model year 2009 Borrego vehicles.
Remedy: Kia will send an interim notification to owners in May 2013. When parts are available, owners will receive a second notification and dealers will replace the stop lamp switch, free of charge.
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 2008 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 2008 Kia Optima owners say
Air bags all 57 →
Power train: at low idle or while slowing down, the car will lose power for a minute until you get on the accelerator and it all comes back on. Alternator had been replaced. And is going to be replaced again soon. Not sure if it's just a bad part. Power steering pump was replaced. The pulley seized. Unrelated. Lighting: third brake light constantly flickers. All Lighting including head lights flicker on and off. Worse when slowing down. Lights on dash board, dome, rear light and head light Bulbs have been replaced. At night when the head lights flicker I cannot see the road. Airbags: the air bag light on dash is always on. Codes have been ran and there are so many. Tried resetting codes it comes back on soon after. Not sure how to go about trying to fix it. All of this has been happening since I purchased the car in November 2024.
Occupant airbag sensor doesn't recognize whether someone is sitting or not. The occupant airbag sensor light goes on and off whether there is a passenger sitting on the seat or not. Kia has extended warranty on this issue however it doesn't let customer know about this part is defected. I was doing my research how to fix the issue and learn that kia had extended warranty for 15 years from the first day of service. the warranty currently expired right now. if I knew there was a warranty, I would go to dealer to fix the issue the day that my wife bought the car.
Engine & cooling all 24 →
Odometer Fraud. The contact owns a 2008 Kia Optima. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed the vehicle's transmission failure. The contact discovered a mileage discrepancy after purchasing the vehicle. The vehicle was a dealer sale. At the time of purchase, the mileage was 198,000. It was later discovered that the mileage on the Title was 217,000.
Basically the engine secede up while driving from one place to another. Causing Me to suddenly just stop in traffic almost causing an accident . Now the car won't start with a new starter and battery. I have no light on the dash, it currently sits at 124,000 miles on it. It's a grate car I just need the problem fixed
Transmission & drivetrain
Odometer Fraud. The contact owns a 2008 Kia Optima. The contact stated that the check engine warning light was illuminated. The vehicle was taken to an independent mechanic, who diagnosed the vehicle's transmission failure. The contact discovered a mileage discrepancy after purchasing the vehicle. The vehicle was a dealer sale. At the time of purchase, the mileage was 198,000. It was later discovered that the mileage on the Title was 217,000.
Power train: at low idle or while slowing down, the car will lose power for a minute until you get on the accelerator and it all comes back on. Alternator had been replaced. And is going to be replaced again soon. Not sure if it's just a bad part. Power steering pump was replaced. The pulley seized. Unrelated. Lighting: third brake light constantly flickers. All Lighting including head lights flicker on and off. Worse when slowing down. Lights on dash board, dome, rear light and head light Bulbs have been replaced. At night when the head lights flicker I cannot see the road. Airbags: the air bag light on dash is always on. Codes have been ran and there are so many. Tried resetting codes it comes back on soon after. Not sure how to go about trying to fix it. All of this has been happening since I purchased the car in November 2024.
2008 Kia Optima engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.4L 4-cyl | 5-speed automatic | FWD | 21 / 31 / 25 |
| 2.4L 4-cyl | 5-speed manual | FWD | 21 / 31 / 25 |
| 2.7L 6-cyl | 5-speed automatic | FWD | 20 / 28 / 23 |
EPA ratings. Class: Midsize car.
Frequently asked questions
Is the 2008 Kia Optima a good car?
Based on 144 owner complaints filed with NHTSA, the 2008 Optima rates average: 19% fewer complaints than a typical year of the Optima at the same age. It is one of the best Optima years by this measure. 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 2008 Kia Optima?
The air bags — 57 complaints, 40% of all complaints for this model year, most often about frontal. Next are the engine & cooling (24) and transmission & drivetrain (18).
How many recalls does the 2008 Kia Optima have?
There are 3 recalls for the 2008 Kia Optima, the most recent from April 1, 2013 (switch). 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 2008 Kia Optima problems happen?
The median mileage reported in complaints is about 62,000 miles; 43% 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.