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Kia Optima HybridModel year report

2012 Kia Optima Hybrid Problems

Compared with other Kia Optima Hybrid years

More complaints than typical for this model

74/100 1.7× a typical year · 50 = typical

Nearby years with fewer complaints than typical and no open NHTSA investigation: 2014

Based only on NHTSA complaints, recalls and investigations. Not adjusted for how many vehicles were sold, and not a reliability rating. How this is calculated

Complaints
109filed with NHTSA
Median mileage
87,200miles, 99 complaints with mileage
Recalls
3campaigns on record
Trend
StableComplaints filed in the last 3 full calendar years are within 25% of the 3 years before.
NHTSA crash rating
5 / 5stars overall
EPA fuel economy
36 mpgcombined, 2.4L 4-cyl · hybrid FWD · 34 city / 38 hwy

Sources: NHTSA records for the 2012 Kia Optima Hybrid (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error

What owners report

Most complaints from owners of this model year describe engine failure, often preceded by a knocking or ticking sound and ending in a stall, loss of power, heavy smoke or, in a few cases, an engine compartment fire. These reports cluster between roughly 60,000 and 120,000 miles, though a few come in lower. Smaller groups of complaints cover sudden brake loss with hybrid system warnings, jerky or delayed transmission behavior, and clunking noises from the steering.

  1. Engine

    Engine knocking, seizure and failure

    • 53 complaints (49%)
    • median 96,000 mi at 6.6 yrs old (51 state mileage)
    • 4 mention a crash, fire or injury
    • owner-quoted repair $4,500 (median of 10 quotes)
    • filed 2016–2024

    Owners describe a knocking, ticking or clanging noise from the engine that grows louder over time, followed by lost power, stalling, heavy smoke or a seized engine that will not restart. Several say dealers first told them nothing was wrong, and later diagnosed connecting rod bearing damage, oil sludge or a thrown rod and recommended engine replacement. A number of owners note the hybrid was not covered by engine recalls that applied to non-hybrid versions of the same car. Typically reported between about 60,000 and 120,000 miles, often at highway speed when power is lost.

    Recall 20V7500003 related service bulletins

    What to check: Listen for a knock or tick at cold start and during acceleration, and ask for oil change records. Since some complaints mention oil consumption and sludge, check the oil level and look for smoke on a test drive; also ask whether any engine-related service campaigns were completed for this VIN.

    2 excerpts from owner complaints in NHTSA records

    “After ~20k miles, I noticed a slight tapping/knocking noise coming from the engine. I took the car to the dealership for maintenance and asked about the noise. They said there was nothing wrong. Over time, it got a bit louder but not much and each time it was taken to the dealership, they would say there was nothing wrong. …”

    NHTSA complaint #10903342, filed 2016-09, 80,000 miles

    “For the past year my car has had a problem losing power in the middle of the freeway, very dangerous, dropping from 70 MPH to 40 with no acceleration forcing me to put on my hazards and pull over. Ive taken it to dealerships and payed over $700 for them to tell me they couldnt find anything wrong.the engine oil light comes on thousands of miles before its time to be changed. …”

    NHTSA complaint #11207610, filed 2019-05, 128,000 miles
  2. Brakes

    Brake pedal to the floor with hybrid warning

    • 17 complaints (16%)
    • median 80,000 mi at 6.7 yrs old (13 state mileage)
    • 3 mention a crash, fire or injury
    • filed 2013–2026

    Owners describe the brake pedal sinking to the floor with little or no braking effort while a hybrid system warning tells them to stop and check the brakes, sometimes accompanied by a grinding sound. Some say the condition cleared after restarting the car and then returned. Others report ABS and check engine lights staying on. Reported from about 30,000 to 160,000 miles, including at low speeds while braking for a stop.

    Recall 23V6520001 related service bulletin

    What to check: Ask whether the brake-related recall work was completed for this VIN, and test the pedal feel with the car running and after a restart. Any warning message about the hybrid system and brakes should be investigated before driving.

    2 excerpts from owner complaints in NHTSA records

    “I have had 2 issues: my uvo system has malfunctioned multiple times and my system is going to be replaced again today. I have had brake issues, my master cylinder was replaced and its going back in today for brakes. Now my car is pulling to the left! I have 25,000 miles on this car!”

    NHTSA complaint #10537233, filed 2013-08, 2,000 miles

    “I was driving at 45 miles per hour in all sudden my car shuts off and says hybrid safety issue check break. The car shut off on me and my brake went right to the floor and I could not stop. So I ran into a field thank god that was right there and I had my four year old kids in the car. I turn the car back on and everything went back to normal started driving it did it again and my brake went right to the floor and said the same thing. I have saw four other complaints about this. …”

    NHTSA complaint #11100567, filed 2018-06, 140,000 miles
  3. Electrical system

    Hybrid system warning and loss of power or shutdown

    Mentioned in 5 of 60 sampled complaints

    Drivers report a hybrid system warning message telling them to pull over and shut off the car, sometimes with a do-not-drive message, after which the vehicle will not restart or will not accelerate above low speed. Some have been told the hybrid battery failed, others that a drive motor temperature sensor or hydraulic control unit was at fault, and a few had no cause found. Mostly reported from about 70,000 to 160,000 miles, often at highway speeds.

    Recall 23V6520002 related service bulletins

    What to check: Ask whether the car has had any hybrid system warnings or stored codes, and have a hybrid-capable shop read the battery and motor electronics before purchase; a routine test drive will not reveal these faults.

    2 excerpts from owner complaints in NHTSA records

    “The orange square wrench light on the dashboard came on but as soon as the car was turned off would go away. No trouble codes showed up. It happened 3 times in a week so once it popped on, went to the dealership to diagnose while it was still running. While driving there, the car had very little power-making the left turn into the dealership (crossing heavy oncoming traffic) was scary since the gas pedal was to the floor and the vehicle was barely moving. …”

    NHTSA complaint #10967262, filed 2017-03, 99,500 miles

    “The contact owns a 2012 Kia Optima Hybrid. While driving approximately 50 MPH, the vehicle started to slow down and then stalled without warning. The vehicle was able to coast to the side of the road. The contact powered off the engine. The vehicle was restarted, but the failure recurred. The vehicle was towed to an independent mechanic where it was diagnosed that the hybrid battery failed and needed to be replaced. The vehicle was not taken to a dealer and was not repaired. …”

    NHTSA complaint #11090297, filed 2018-04, 107,000 miles
  4. Steering

    Clunking noise and play in the steering

    • 6 complaints (6%)
    • median 84,000 mi at 7.0 yrs old (5 state mileage, few)
    • filed 2016–2019

    Owners report a clunk or pop when turning the wheel or driving over small bumps, sometimes with vibration or wobble through the steering wheel at highway speed. Some describe the noise starting quietly and becoming loud over time, and one notes the dealer found the alignment within specification and said the car was normal. Usually reported between about 50,000 and 84,000 miles, with a few noted much earlier.

    8 related service bulletins

    What to check: With the car parked, turn the wheel side to side and listen for a clunk, then drive over uneven pavement at low speed. Ask whether the steering gear or motor-driven power steering components have been repaired under any service bulletin.

    2 excerpts from owner complaints in NHTSA records

    “When I move the steering wheel from side to side I can hear a popping noise when I am driving as well as when I am at a stop. The steering wheel has excessive vibration and raddling when I am driving between 65-75 on the highway, it decreases at 80 MPH. I have gotten my tires checked as well as an alignment so it is not an issue with that.”

    NHTSA complaint #11138961, filed 2018-10, 84,000 miles

    “This vehicle is dangerous and extremely faulty. I have had to replace the transmission due to the car traveling at no more than 55 MPH. In addition, there was extreme knocking within the steering wheel in which the steering wheel had to be replaced as well. Then my car started drifting again with white smoke coming from under the hood and exhaust. Now Kia is saying that the engine is faulty and needs to be replaced. My car is not being serviced for a recall on the engine because it is a hybrid, yet non-hybrid Kia cars have a recall for it. …”

    NHTSA complaint #11130766, filed 2018-09, 100,000 miles

Buying note. This model year draws a high share of engine failure reports, so service records and a pre-purchase inspection focused on the engine and hybrid system matter more than cosmetics. Confirm which open recalls or service campaigns have been completed for the specific VIN before agreeing on a price.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.

NHTSA recorded 109 consumer complaints for the 2012 Kia Optima Hybrid. 99 of the complaints include a mileage, and 15% of those were filed for vehicles with under 50,000 miles; the median is 87,200 miles. Of all complaints, 5 involved a crash, 5 a fire, 2 an injury, according to the filers. NHTSA lists 3 recall campaigns and 135 technical service bulletins for this model year. Compared with the other 4 Kia Optima Hybrid model years that have at least 25 complaints and are old enough to compare, this one scores 74 out of 100, where 50 is a typical year for the model (more complaints than typical for this model). The comparison allows for the era and for how long each year has had to collect complaints, but not for how many vehicles were sold.

Which parts are reported most

Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.

Also reported: Engine cooling (2), Wheels (2), Exterior lighting (1), Hybrid propulsion system (1), Seat belts (1), Suspension (1).

Example complaints

Engine: “Engine lost power stated smoking all over trunk engine going 60 MPH on rt15 thurmont maryland outside of camp david, oil was everywhere loud boom, my grandson was in the back seat at this time as well, dealership telling me they are not at falt or replacing enging,as I see a federal investigation on this issue as well, I need my car repaired or replaced asap,.”

NHTSA complaint #11062889, filed 2018-01, 55,550 miles

Electrical system: “The electric motor hydraulic pump needed to be replaced I was told it wasnt a recall however im seeing several of the same complaints. While driving about 55 MPH my check engine light came on message appeared telling me to stop do not drive cant drive safely. Now my vehicle is making a loud knocking noise I have no acceleration power and I have no oil leaks but my car is burning up oil.”

NHTSA complaint #11104828, filed 2018-06, 110,000 miles

Brakes: “Today I just got my car back from the dealership yesterday for the brakes failing in the hybrid system they told me everything was fine but the mechanic said to me that we don't know what's going on with the car so they let me leave with it I was in lake worth today doing 45 miles per hour and it did it again and said check brake car shut off my brakes failed and I ran into a median to stop my car. Kia corporation is not doing nothing about this the dealership does he even have an answer for me and that is gunther Kia. …”

NHTSA complaint #11101949, filed 2018-06, 140,000 miles

Transmission and drivetrain: “Over the last month, I have been experiencing many transmission issues where the my 2012 Kia Optima Hybrid is hard shifting between gears 2-3 and 5-6; same when down shifting. I have had to break extra long because of the downshifting, the car 'lurches' forward, and I fail to get sufficient power in the proper gear when I accelerate.”

NHTSA complaint #10919004, filed 2016-10, 32,000 miles

Mileage when problems were reported

15% of the 99 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 68,000 and 111,000 miles.

4%0–104%10–257%25–5015%50–7533%75–10029%100–1507%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (99 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 87,200 miles.

Complaints by year filed

Trend: stable. Complaints filed in the last 3 full calendar years are within 25% of the 3 years before.

’13’15’1732’19’21’23’26
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Crash test ratings

NHTSA's 5-Star Safety Ratings for the 2012 Kia Optima Hybrid. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.

VersionOverallFrontalSideSide poleRollover
Optima Hybrid · sedan FWD★★★★★5 / 5555 · 9.6% risk

Neighbouring years: 2013: same overall rating. A redesign between years can change both the car and the test.

Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.

Fuel economy and running cost

EPA ratings for each 2012 Kia Optima Hybrid version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).

VersionEngineTransmissionCityHwyComb.Fuel / yr
Optima Hybrid FWD2.4L 4-cyl · hybrid6-speed automatic343836$1,850

Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.

Recalls and investigations

Recall details for the 2012 Kia Optima Hybrid → · Check a VIN at nhtsa.gov/recalls

Technical service bulletins

TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 135 on record; the latest 10 are shown.

See all 135 bulletins →

Other model years of the Kia Optima Hybrid

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
20172623,000254250 · TypicalRising
20151256,2000537—Not enough data
20143145,000053718 · FewerFalling
20135668,000253753 · TypicalRising
201210987,200353674 · MoreStable
20113480,5003—3650 · TypicalRising

All Kia Optima Hybrid model years · Best and worst years by complaints

Frequently asked questions

What are the most common problems with the 2012 Kia Optima Hybrid?

Most complaints from owners of this model year describe engine failure, often preceded by a knocking or ticking sound and ending in a stall, loss of power, heavy smoke or, in a few cases, an engine compartment fire. The issues reported most often: Engine knocking, seizure and failure; Brake pedal to the floor with hybrid warning; Hybrid system warning and loss of power or shutdown.

How many NHTSA complaints does the 2012 Kia Optima Hybrid have?

NHTSA recorded 109 consumer complaints for the 2012 Kia Optima Hybrid as of Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2012 Kia Optima Hybrid is reported most often?

Engine is named most often, in 72 complaints (66% of the total), followed by electrical system with 20.

Has the 2012 Kia Optima Hybrid been recalled?

NHTSA lists 3 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

How did the 2012 Kia Optima Hybrid do in NHTSA crash tests?

NHTSA's 5-Star Safety Ratings give the 2012 Kia Optima Hybrid 5 out of 5 stars overall. Ratings from different model years are only comparable when the vehicle was not redesigned in between.

What gas mileage does the 2012 Kia Optima Hybrid get?

The EPA rates the 2012 Kia Optima Hybrid (Optima Hybrid, 2.4L 4-cyl · hybrid) at 36 mpg combined, 34 city and 38 highway, with an estimated annual fuel cost of $1,850 at 15,000 miles a year. Other engine and drive versions are rated differently.

At what mileage are problems with the 2012 Kia Optima Hybrid reported?

Among the 99 complaints that include a mileage, the median is 87,200 miles and the middle half falls between 68,000 and 111,000 miles; 15% were filed for vehicles with under 50,000 miles.

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. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).

Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.