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Car · Kia problems

2015 Kia Optima problems

1,010 owner complaints filed with NHTSA for the 2015 Kia Optima. The most reported area is engine and engine cooling (64% of them). NHTSA also lists 131 service bulletins and 4 recall campaigns.

1,010owner complaints
31say a crash was involved
74say a fire was involved
24injuries and deaths reported

Counts are what owners told NHTSA, as filed. NHTSA does not confirm each report, and a complaint is not proof of a cause. Injuries: 23. Deaths: 1.

Complaints by area

Each bar is the share of this model year's 1,010 complaints that name that area. A complaint can name more than one area, so the shares add up to more than 100%.

14 smaller areas not shown (136 complaints in total).

Do not compare models by these numbers. NHTSA has no sales count for each model, so a model with more complaints may just have sold more cars. Use them to see which areas owners write about, not to rank cars.

Service bulletins

NHTSA's database lists 131 repair bulletins from Kia for the 2015 Kia Optima. A bulletin is a repair instruction sent to dealers. It is not a recall and does not mean your car is covered. The 8 newest:

  1. TSB_TRA046_R5Received April 23, 2025

    Power train (transmission and drive)

    New/revised sections of this bulletin are indicated by a black bar in the margin area.

  2. TSB_TRA046_R4Received June 4, 2024

    Power train (transmission and drive)

    Information relating to the correct transmission fluid type and fill quantity requirement for each Kia model.

  3. CS2310Received August 2, 2023

    Technical service bulletin customer satisfaction: Kia genuine remote start control module upgrade for anti-theft logic compatibility (CS2310) - this bulletin provides information to update the...

  4. CS2303Received March 6, 2023

    Technical service bulletin customer satisfaction: anti-theft S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2303) - This bulletin provides the procedure to upgrade the software logic of the Integrated...

  5. TSB_ELE273Received February 2, 2023

    Fuel system

    High-voltage battery safety plug fuse inspection and replacement - This bulletin provides information associated with the "Hybrid System Warranty Extension Program" (WTY029) to inspect and, if...

  6. TSB_TRA046_R3Received December 6, 2022

    Power train (transmission and drive)

    Transmission fluid application guide - This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model.

  7. TSB_SST067_R2Received September 17, 2022

    Engine and engine cooling

    Bearing clearance tester (BCT) PROCEDURES - This bulletin provides information regarding test procedure of the Bearing Clearance Tester (BCT) Special Service Tool (SST).

  8. PS720Received May 4, 2022

    Engine and engine cooling

    Pitstop: injector harness routing for PI1802Y/Z AND PI1803Y/Z ENGINE REPLACEMENTS - This bulletin provides information to address a no-start or hard start with poor running condition after engine...

Recalls

NHTSA lists 4 recall campaigns for the 2015 Kia Optima. Recall repairs are free at a Kia dealer. The 3 to look at first:

  1. 23V652000September 25, 2023Do not drive notice

    Service brakes, hydraulic

    The Hydraulic Electronic Control Unit (HECU) may experience an electrical short, which can result in an engine compartment fire while parked or driving.

  2. 21V331000May 10, 2021Do not drive notice

    Service brakes, hydraulic

    Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.

  3. 18V907000December 19, 2018

    Fuel system, gasoline

    The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.

See all 4 recalls for the 2015 Kia Optima, or check your VIN below to see which are open on your car.

Common repairs in this area (not a diagnosis)

These are repair jobs that sit in the areas owners report most. A complaint may need a diagnosis first: the same symptom can come from many causes, and a serious one such as engine failure is not fixed by a cheap part. They are not a forecast of what your Optima will need. Ranges are US estimates for all makes.

Start with a diagnosis

Engine and engine cooling 648 complaints · 64%

No repair price here: this area usually needs a diagnosis first. A diagnostic scan (check engine light) runs $55 to $250.

Electrical system 135 complaints · 13%

Service brakes 90 complaints · 9%

Steering 69 complaints · 7%

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Check your VIN

Complaints and bulletins cover a whole model year. Only the VIN shows what is open on your car.

0 of 17 characters

Recall and complaint data comes from NHTSA, the US government's vehicle safety agency, and is cached for up to a day. Recall repairs at a dealer are free. A recall that is not listed may not apply to your car or may not be filed yet. Check nhtsa.gov/recalls too.

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2015 Kia Optima: questions

What are the most common problems on the 2015 Kia Optima?

Of the 1,010 owner complaints filed with NHTSA for the 2015 Kia Optima, 648 (64%) name engine and engine cooling, and 135 (13%) name electrical system. A complaint can list more than one area, so the shares add up to more than 100%. These are owner reports, not proven causes.

Is the 2015 Kia Optima reliable?

These numbers cannot say. NHTSA complaints have no sales count to compare against, so a high number on one model does not mean it fails more than another. Use them to see which areas owners write about, then check your own VIN for open recalls.

Do these complaints include crashes or fires?

Owners marked 31 of the 1,010 complaints as involving a crash and 74 as involving a fire. They also reported 23 injuries and 1 death. NHTSA records these as the owner reports them and does not confirm each one.

How many recalls does the 2015 Kia Optima have?

NHTSA lists 4 recall campaigns for the 2015 Kia Optima. Recall repairs are free at a Kia dealer. Enter your VIN to see which ones are open on your car.

What is a service bulletin?

A service bulletin is a repair instruction a maker sends to its dealers. It is not a recall, and it does not mean your car is covered. NHTSA lists 131 repair bulletins for the 2015 Kia Optima.

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Sources

Complaint, bulletin and recall counts come from NHTSA as filed. Repair prices are estimates from our own ranges. Not a repair shop, estimates only.