Problems · NHTSA complaints
2010 Kia Optima problems
Owners filed 75 complaints about the 2010 Kia Optima with NHTSA between Jun 2010 and Mar 2026. The most-cited component is power train (24).
Complaints
75
Filed with NHTSA
Crashes
7
Reported by owners
Fires
2
Reported by owners
Injuries
5
People reported injured
Deaths
0
Reported to NHTSA
Complaints by component
One complaint can cite several components
- Power train24
- Air bags17
- Electrical system13
- Engine9
- Vehicle speed control6
- Service brakes4
- Latches/locks/linkages3
- Engine and engine cooling2
- Steering2
- Exterior lighting2
- Seat belts2
- Structure2
- Forward collision avoidance1
- Suspension1
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Data from NHTSA Complaints API · synced Oct 28, 2026NHTSA vehicle page
When complaints were filed
Does it get worse with age? Complaints per calendar year filed
3
2
7
16
6
10
8
2
5
4
2
3
3
1
0
2
1
View as table
| Model year | Complaints filed per calendar year |
|---|---|
| 2010 | 3 |
| 2011 | 2 |
| 2012 | 7 |
| 2013 | 16 |
| 2014 | 6 |
| 2015 | 10 |
| 2016 | 8 |
| 2017 | 2 |
| 2018 | 5 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 0 |
| 2025 | 2 |
| 2026 | 1 |
Mileage at failure isn’t a structured field in NHTSA complaint data, so we don’t chart it. Some owners mention it in their reports below.
Top problems in owners’ words
Verbatim from NHTSA complaints, newest first
Power train
24 reports1 crash
“The car lurches or jerks when slowing down or stopping at about 20 mph . Lurch or jerking is enough to jerk to the driver . Has anyone got answer to why the Kia Optima 2010 does this.”
Air bags
17 reports6 crashes
“TL* THE CONTACT OWNS A 2010 KIA OPTIMA. THE CONTACT STATED THAT THE AIR BAG WARNING LIGHTS WERE ILLUMINATED. GERVAIS KIA (6 INDUSTRIAL AVE, LOWELL, MA 01851, (978)454-1202) WAS CONTACTED AND INFORMED OF THE FAILURE. THE CONTACT WAS INFORMED THAT THE SEAT OCCUPANT DETECTION SYSTEM NEEDED TO BE REPLACED AT A COST OF $5,000. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 100,000.”
Electrical system
13 reports
“1.We were driving and the car just cut off. Not from the lack of fuel but cut off in the middle of traffic. (Available for inspection) 2.The car stopping in traffic running about 65 mph causes the safety of all on the highway. A very dangerous situation. 3. The problem has showed itself numerous times. 4. The car had been inspected/checked after the incident. There was no errors on the computer after diagnosis. 5. No errors nor warning lights prior the incident. After the incident, the car cranks right back up without error.”
Engine
9 reports
“The engine on my 2010 Kia Optima suddenly seized without warning around 150,000 miles. The vehicle had no knocking sounds or warning signs prior to failure. A mechanic diagnosed the vehicle with a seized engine. This created a sudden loss of vehicle operation. I am concerned this may be related to the known engine failure issues reported in Kia vehicles.”
Vehicle speed control
6 reports1 crash
“ENGINE BLEW DOING 40-45 ON A COUNTY ROAD 1,000 RPM 5TH GEAR, IN AUTOMATIC. 2ND TO 1ST, SOFT TO HARD KICK. VEHICLE SPEED SENSOR MUST BE FAULTY I HAVE TO PUMP BRAKE MORE TO SLOW THE ENGINE SPEED IT LIKES TO BOG TRYING TO SPEED UP IN AUTOMATIC MODE”
Service brakes
4 reports
“Car would not engage into “Park” while attempting to park car in driveway. Shifter would not engage in any gear. Tried to reset button in center console. Contacted mechanic, he towed to garage. Plastic clip connected to cable broke. Earlier Kia’s had a recall due to this issue, why not all Kias due to it is still happening. I was very fortunate that this happened to me in my driveway and not on the highway. I understand there is the same part at the other end of the cable, connects to transmission and shifter, if it also breaks it is going to be very expensive to repair due to placement of the part. I had to rent a vehicle for work while part had to be ordered and replaced.”
Data from NHTSA Complaints API (owner reports, unverified) · synced Oct 28, 2026
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.