2006 Kia Optima Fuel system Problems
- Complaints
- 9about this part
- Share
- 6%of 155 total for the year
- Median mileage
- 51,500miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 9 complaints about the fuel system of the 2006 Kia Optima, 6% of the 155 complaints for this model year. Where a mileage was given, the median is 51,500 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“I had a recall on airbags took it twice to dealer and the light is still on will not go off. Also when I stop and get gas and after I finish pump on the inside it smell so loud just like I waste it on me I have took it to let them check it out cannot find out where it come from”
NHTSA complaint #10820578, filed 2016-01, 96,000 miles“In filling the gas tank when the pump shut off gasoline poured out of the gas tank. The first time I blamed the gas station. It happened again when my daughter was filling the tank. Even after the fuel nozzle was taken out of the tank, a great deal of gasoline poured out of the tank. The dealer checked the car out and said everything was all right. Its not!”
NHTSA complaint #10401858, filed 2011-05, 45,000 miles“I went to go shopping, and at the second stop sign in my neighborhood I stopped. When I tried to drive the gas pedal when pushed would not let the engine go fast enough to go above 20 MPH, then I noticed that the check engine light was on. I pulled over and checked my engine and its fluids, could not find any thing wrong. So I started the car up again, and everything seemed to work fine. So I drove off and the car worked like it should have. I then went to a auto parts store, and they used their meter to check engine codes. …”
NHTSA complaint #10649926, filed 2014-10, 66,961 miles“My vehicle keeps accelerating and slowing down randomly between gears. Can accelerate on. Its own and slow down when more pressure is applied to gas pedal. The check engine light was not on for a month and now it has appeared. This can cause a serious accident.if a less capable person was driving. Many other Kia owners of this.model report. The accelerator pedal position sensor has been the issue for countless owners of this model and have been replaced by the dealer. I have had a diagnostic test done and. It showed the same codes pointing to the accelerator.... …”
NHTSA complaint #10475367, filed 2012-09, 58,000 miles“I bought a new 2006 Kia Optima ex in apr 2006. Sept 2006 the key fobs quit working and the pass side back seat does not secure itself in place at the bottom of the seat and stay/taken to a dealership and fixed. July 2007, the key fob again quit working/taken to the dealership and I was told a TSB was out on this problem and they would replace the receiver which was done. Nov 2007 after the TSB supposedly was taken care of, again the key fob quits working/dealership has again reprogrammed to work again and currently they continue to work. …”
NHTSA complaint #10219099, filed 2008-02, 2,000 milesRelated service bulletins
- 10016851Dec 1, 2004Enhanced diagnosis and repair for p0446/p2422.
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 13 | 9% |
| 2019 | 18 | 8% |
| 2018 | 13 | 6% |
| 2017 | 22 | 9% |
| 2016 | 62 | 8% |
| 2015 | 56 | 6% |
| 2014 | 48 | 8% |
| 2013 | 123 | 9% |
| 2012 | 54 | 6% |
| 2011 | 26 | 4% |
| 2010 | 1 | 1% |
| 2009 | 1 | 1% |
| 2008 | 5 | 3% |
| 2007 | 3 | 2% |
| 2006 | 9 | 6% |
| 2005 | 10 | 7% |
| 2004 | 10 | 4% |
| 2003 | 12 | 9% |
| 2002 | 6 | 6% |
| 2001 | 3 | 2% |
Other parts of the 2006 Kia Optima
46 complaintsLatches, locks and linkages
27 complaintsElectrical system
23 complaintsExterior lighting
16 complaintsTransmission and drivetrain
14 complaintsVisibility (wipers, defrost, mirrors)
13 complaintsBody and structure
12 complaintsEngine cooling
9 complaintsOther or unknown
9 complaintsEngine
7 complaintsVehicle speed control
7 complaintsSuspension
6 complaints
← All problems reported for the 2006 Kia Optima
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology