3rd generation · TF (K5 in Korea/China) · 6,097 complaints, 3,557 with mileage
Owners filed 6,097 complaints with NHTSA about the 2011–2015 Kia Optima, and 3,557 of them record the mileage at which the failure happened. That is enough to show not just what fails, but when.
Failures are spread across the mileage range, with the middle half between 45,000 and 115,000 miles. The median is 81,868 miles.
The most-reported areas are the engine (35.4% of complaints, typically around 96,404 miles), the steering (10.9% of complaints, typically around 50,000 miles), problems owners could not categorise (8.8% of complaints, typically around 71,000 miles).
10 recall campaigns cover this generation.
| System | Complaints | Share | Typical mileage | Middle half |
|---|---|---|---|---|
| Engine | 2,160 | 35.4% | 96,404 | 66,000–122,125 |
| Steering | 662 | 10.9% | 50,000 | 10,000–89,000 |
| Unknown Or Other | 535 | 8.8% | 71,000 | 47,000–100,000 |
| Electrical System | 525 | 8.6% | 80,000 | 46,000–107,500 |
| Structure | 311 | 5.1% | 64,000 | 40,000–96,000 |
| Fuel/Propulsion System | 239 | 3.9% | 85,000 | 62,609–117,284 |
| Power Train | 212 | 3.5% | 81,300 | 36,000–107,500 |
| Service Brakes | 210 | 3.4% | 49,800 | 13,131–85,000 |
| Exterior Lighting | 200 | 3.3% | 77,874 | 52,400–114,000 |
| Air Bags | 181 | 3.0% | 84,250 | 60,000–113,000 |
| Year | Complaints | With mileage |
|---|---|---|
| 2011 | 775 | 546 |
| 2012 | 1,263 | 860 |
| 2013 | 1,878 | 1,048 |
| 2014 | 786 | 437 |
| 2015 | 1,395 | 666 |
Complaints about this generation are not spread evenly across the vehicle, and the systems that generate the most of them do not all fail at the same point in a car's life. The median failure across all systems here is 81,868 miles; the figures below show which parts of the car run ahead of that and which run behind.
The engine accounts for 35.4% of complaints (2,160 reports, 1,335 of them with a mileage figure), with a median of 96,404 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 66,000 and 122,125 miles.
A single system taking 35.4% of all complaints is a concentration worth noting. It means that for this generation, most of what owners reported came back to one area of the car rather than being distributed across many small faults.
The steering accounts for 10.9% of complaints (662 reports, 459 of them with a mileage figure), and it fails early — a median of 50,000 miles, well before the vehicle's overall median. Failures clustered this far below the rest of the car usually point to a design or manufacturing problem rather than wear, because wear does not selectively target one system on low-mileage examples. The middle half of these reports falls between 10,000 and 89,000 miles.
Problems owners could not categorise accounts for 8.8% of complaints (535 reports, 199 of them with a mileage figure), with a median of 71,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 47,000 and 100,000 miles.
The electrical system accounts for 8.6% of complaints (525 reports, 263 of them with a mileage figure), with a median of 80,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 46,000 and 107,500 miles.
Body structure accounts for 5.1% of complaints (311 reports, 105 of them with a mileage figure), with a median of 64,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 40,000 and 96,000 miles.
The fuel and propulsion system accounts for 3.9% of complaints (239 reports, 118 of them with a mileage figure), with a median of 85,000 miles, close to the vehicle's overall pattern. The middle half of these reports falls between 62,609 and 117,284 miles.
Within this generation, complaint volume is not constant across model years. The 2013 model year drew the most — 1,878 complaints — while 2011 drew the fewest at 775. The median year sits at 1,263.
NHTSA records 10 recall campaigns covering vehicles in this generation. A recall means the manufacturer or the regulator concluded there was a safety defect or a standard was not met, and that a free remedy is owed to owners — including second and later owners.
The campaigns cluster around the hydraulic brake circuit (3), the fuel system (2), body structure (1). Repeated recalls against the same area of the car generally mean the first remedy did not fully resolve the underlying problem.
Recall status is specific to the individual vehicle, not the model. Checking a VIN against NHTSA's lookup is free and takes under a minute, and it is the only way to know whether a particular car has had the work done.
Of the 6,097 complaints filed against this generation, 243 reported a crash; 513 reported a fire; 217 reported an injury; 13 reported a fatality. Crash-involved reports represent 4.0% of the total.
These are owner-reported outcomes, not verified investigations, and they are not adjusted for how many of these vehicles are on the road. They are included because the distinction between a fault that strands a car and a fault that causes a collision is the one that matters most, and it is not visible in a complaint count alone.
For a buyer, failures on this generation are spread rather than concentrated: the middle half falls between 45,000 and 115,000 miles, with a median of 81,868. There is no single mileage threshold to watch, which means condition and maintenance records are more informative than the odometer.
On inspection, the engine and the steering are where this generation's reports concentrate, so those are the areas worth a specific look. The steering in particular shows a median failure mileage of 50,000, which gives a concrete number to compare against the odometer of any car you are considering.
None of this is a substitute for a pre-purchase inspection on the individual car. Aggregate patterns describe a population; the example in front of you has its own history.
Theta II 2.4L GDI and 2.0L turbo GDI connecting-rod bearing failure. Metal debris left in the crankshaft oil passages during machining at Hyundai's Alabama plant restricts oil to the rod bearings; the bearings wear, producing a knock, then seizure, stalling, and in some cases fire. Addressed by NHTSA recalls 15V-568 and 17V-224 among others, a knock-sensor detection system software update, and warranty extension to 15 years/150,000 miles. NHTSA assessed Hyundai and Kia a combined $210 million in civil penalties in 2020 over the handling of these recalls.
Panoramic sunroof glass spontaneously shattering; subject of NHTSA investigation and Kia service action.
Electric power steering column motor and torque sensor faults causing sudden loss of assist.
| Campaign | Date | Component |
|---|---|---|
| 23V652000 | 2024-03-29 | Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip:Control Unit/Module |
| 22V560000 | 2022-09-26 | Structure:Body:Roof And Pillars |
| 22V093000 | 2022-08-02 | Fuel System, Gasoline:Delivery:Hoses, Lines/Piping, And Fittings |
| 21V331000 | 2021-07-02 | Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip:Control Unit/Module |
| 20V519000 | 2020-10-20 | Service Brakes, Hydraulic:Antilock/Traction Control/Electronic Limited Slip:Control Unit/Module |
| 20V100000 | 2020-06-12 | Fuel System, Gasoline:Delivery:Hoses, Lines/Piping, And Fittings |
| 18V907000 | 2019-01-17 | Engine |
| 18V363000 | 2018-09-28 | Air Bags: Air Bag/Restraint Control Module |
| 17V224000 | 2017-06-20 | Engine And Engine Cooling:Engine |
| 13V114000 | 2013-04-19 | Exterior Lighting:Brake Lights:Switch |