2011 Kia Optima Transmission and drivetrain Problems
- Complaints
- 25about this part
- Share
- 4%of 594 total for the year
- Median mileage
- 36,000miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 25 complaints about the transmission and drivetrain of the 2011 Kia Optima, 4% of the 594 complaints for this model year. Where a mileage was given, the median is 36,000 miles.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“18v363 17220 it has made a loud clanking/knocking noise. It stalled then completly died once I got off the main highway and wouldnt crank again. It uses an awful lot of oil. Upon first oil change it had shards of metal in it. The place I got the vehicle from says they put new motor in it among other things but I havent seen in change in things other than it doesnt smoke under the hood while idling.”
NHTSA complaint #11373251, filed 2020-11, 79,000 miles“My Kia Optima (2011) had started a ticking engine noise at around 90k mark and now it's escalated to a lower end was told by service departmenta t about 92k it was normal noise of camshaft and I only noticed it under loads and higher elevation on overpasses. I have been using mobil1,fully synthetic motor oils and a k&n oil filters. This last week I have noticed that it was getting louder.and from the engine compartment. …”
NHTSA complaint #10838955, filed 2016-02, 92,000 miles“My Kia was making a whistling noise on and off for awhile then my oil light would flicker so I figured I need an oil change. Got my oil changed and then the car started make a knocking noise and would get worse with acceleration and would have a hard time accelerating. It would jolt and vibrate and make knocking and flapping noises. Turn on my road to go home and lost power. My car slowly came to a stop I could not accelerate at all. My engine, battery, oil, and eps light came on. …”
NHTSA complaint #10990664, filed 2017-05, 107,500 miles“While on my way to pick up my daughter from school at around between 1 and 2 oclock pm I was stopped at a 4 way stop at ga hwy 225 in springplace , as I proceeded through the 4 way while in motion I hear and feel a sudden jolt to my vehicle and I skid to a stop thank god it had just went through the stop sign and did not gain any speed. I exited the vehicle and glanced underneath thinking that I had hit something, instead I noticed that my motor and transmission where no longer connected to my vehicle on the driver side but they where laying almost on the ground. …”
NHTSA complaint #11253260, filed 2019-09, 170,000 miles“On 5-4-14 I was driving from wisconsin when we decided to stop at wal-mart, while we were waiting for a person to move out of its parking spot, my Optima start to accelerate even when I had my foot in the brake, my first reaction was to move the gear shift to neutral and then the engine start racing up the RPM were very fast (was in neutral), at the moment a lady and her small kid were crossing in front of my car, god knows what it would happened if I wouldn't move the gear to neutral. …”
NHTSA complaint #10588664, filed 2014-05, 29,500 milesRelated service bulletins
- 11017172Apr 17, 2025TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. New/revised sections of this bulletin are…
- 11000787May 16, 2024This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission…
- 10226555Nov 18, 2022TECHNICAL SERVICE BULLETIN: TRANSMISSION FLUID APPLICATION GUIDE - This bulletin provides information relating to the correct transmission fluid type and fill quantity…
- 10174520Apr 24, 2020TECHNICAL SERVICE BULLETIN: - TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. This bulletin provides information relating…
- 10130104Feb 16, 2018TSB - DRIVESHAFT SERVICEABILITY - This bulletin has been revised most recently to include additional information. This bulletin provides information regarding axle shaft…
- 10127029Dec 13, 2017TSB - SERVICE ACTION: TURBO OIL FEED LINE REPLACEMENT (SA300) - This bulletin provides the procedure to replace the turbo oil feed line on some 2011-2015MY Optima (TF), produced…
- 10089382Aug 3, 2015Tsb: 6-spd. A/t adaptive value reset /relearn - this bulletin provides the procedures necessary to reset and relearn the adaptive values after transmission replacement or…
- 10092147Jun 1, 2015Tsb: 6 spd a/t solenoid replacement multiple dtcs - this bulletin provides information relating to the replacement of various shift solenoids on 6-speed automatic transaxles…
- 10089761Jun 1, 2015Tsb: 6 spd a/t solenoid replacement multiple dtcs - this bulletin provides information relating to the replacement of various shift solenoids on 6-speed automatic transaxles…
- 10091489Dec 6, 2013Tsb: automatic transmission fluid application guide - this bulletin provides information relating to the correct automatic transmission fluids that are required for each kia…
Transmission and drivetrain: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 27 | 18% |
| 2019 | 17 | 8% |
| 2018 | 19 | 8% |
| 2017 | 21 | 8% |
| 2016 | 74 | 10% |
| 2015 | 49 | 5% |
| 2014 | 20 | 3% |
| 2013 | 64 | 5% |
| 2012 | 54 | 6% |
| 2011 | 25 | 4% |
| 2010 | 24 | 32% |
| 2009 | 33 | 28% |
| 2008 | 18 | 13% |
| 2007 | 13 | 8% |
| 2006 | 14 | 9% |
| 2005 | 3 | 2% |
| 2004 | 8 | 4% |
| 2003 | 8 | 6% |
| 2002 | 6 | 6% |
| 2001 | 12 | 8% |
Other parts of the 2011 Kia Optima
256 complaintsSteering
100 complaintsExterior lighting
88 complaintsElectrical system
63 complaintsBrakes
47 complaintsOther or unknown
41 complaintsAir bags
31 complaintsFuel system
26 complaintsBody and structure
21 complaintsVehicle speed control
19 complaintsSuspension
18 complaintsVisibility (wipers, defrost, mirrors)
11 complaints
← All problems reported for the 2011 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