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2018 Kia Sedona problems

The most common problem on the 2018 Kia Sedona is engine and cooling. It has fewer complaints than a typical Sedona model year.

Typical yearClose to a typical year
Year score
88/100
Owner complaints
49
Recalls
3
Service bulletins
55
Worst area
Engine
Fuel economy
19-21mpg

The worst 2018 Kia Sedona problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Engine
    22
  • Electrical
    11
  • Airbags
    6
  • Body
    3
  • Transmission
    3
  • Brakes
    2
  • Fuel system
    2
  • Lights
    2
  • Seats
    2
  • Wheels
    2
  • Acceleration
    1
  • Driver assistance
    1
  • Locks
    1
  • Seat belts
    1
  • Steering
    1
  • Suspension
    1
  • Tires
    1
  • Visibility
    1

Specific symptoms reported on the 2018 Kia Sedona

Engine failure 12Check engine light 6Airbag light 5Fire or smoke 5Loss of power 5

Recalls 3

Air bagsReported January 25, 2022 · 410,619 vehicles affected
What is wrong
Kia Motors America (Kia) is recalling certain 2017-2019 Sedona, Soul, Soul EV, 2017-2018 Forte, and 2017 Forte Koup vehicles. The Air Bag Control Unit (ACU) cover may contact a memory chip on the printed circuit board and damage the electrical circuit. Circuit damage may result in deactivated air bags that will not deploy in a crash.
Risk
Air bags that do not deploy as intended can increase the risk of injury in a crash.
Remedy
Dealers will inspect the ACU, and either update the software or replace the unit, as necessary. Repairs will be performed free of charge. Owner notification letters were mailed March 21, 2022. Owners may contact Kia customer service at 1‑800‑333‑4542. Kia's number for this recall is SC226.

Recall number 22V031000 · Recall details

Electrical system: wiringReported February 19, 2019 · 94,389 vehicles affected
What is wrong
Kia Motors America (Kia) is recalling certain 2015-2018 Sedona vehicles equipped with manually-adjusted front passenger seats. Over time, the Occupant Detection System (ODS) wiring harness located underneath the front passenger seat may break from the seat being occupied.
Risk
If a child is in a child seat in the front seat, a broken ODS wiring harness will not prevent the front passenger air bag from deploying in the event of a crash, increasing the risk of injury to the child.
Remedy
Kia will notify owners, and dealers will remove the wire harness clip to prevent the wiring harness from breaking. If the harness is found damaged, the front passenger seat cushion will be replaced. These repairs will be performed free of charge. The recall began March 19, 2019. Owners may contact Kia customer service at 1‑800‑333‑4542. Kia's number for this recall is SC175.

Recall number 19V109000 · Recall details

Structure: body: doorReported May 23, 2018 · 106,428 vehicles affected
What is wrong
Kia Motors America (Kia) is recalling certain 2015-2018 Kia Sedona vehicles equipped with a power sliding door (PSD). The PSD may not auto-reverse when its closing is obstructed.
Risk
If the door closes on an occupant, there is an increased risk of an injury.
Remedy
Kia will notify owners, and dealers will reprogram the PSD module software, free of charge. The recall began on June 18, 2018. Owners may contact Kia customer service at 1‑800‑333‑4542. Kia's number for this recall is SC164.

Recall number 18V338000 · Recall details

See all 3 recalls for the 2018 Kia Sedona

Technical service bulletins for the 2018 Kia Sedona 55

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 55 bulletins for the 2018 Kia Sedona

2018 Kia Sedona fuel economy

Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.

EngineDriveCityHighwayCombined
3.3L 6‑cylFWD17-1822-2519-21

What 2018 Kia Sedona owners say

Most recent owner complaints, unedited.

Filed Oct 16, 2026 · Engine, Transmission · IL · fire

I was driving, my car just stopped, couldn’t start, started smoking and started on fire.

Filed Aug 2, 2026 · Engine · HI

2018 Kia Sedona lx stalled while my wife was driving on the highway. No warning lights were on until the vehicle lost all power. Luckily my wife was able to pull the car safely to the side. The vehicle only has 36960 miles. Brought vehicle to the dealer and they said engine was seized. That Kia would not attempt a repair unless I gave copies of oil/oil filters from oil changes that I performed. I did not have these so Kia is not honoring the warranty. I changed the oil every year regardless of the miles. Did not miss. The oil is clean as I just changed the oil a couple months ago. Someone could have been killed. We got that van for our disabled adult son. Thankfully he wasn’t in the vehicle. We’ve been ripped off but at least my family is safe.

Filed Jul 2, 2026 · Electrical · 90,000 miles · IL

The contact owns a 2018 Kia Sedona. The contact stated that the air bag and the check engine warning lights were illuminated. The vehicle failed to start and was towed to the dealer, where it was diagnosed with alternator failure; however, the battery was replaced. Additionally, the contact stated that after his wife had pulled into the driveway, the instrument panel turned blank, and the driver noticed smoke coming from under the hood. The driver turned off the vehicle, and the vehicle cooled down. The contact stated that upon attempting to restart the vehicle later in the evening, the vehicle failed to start. The contact opened the hood and noticed that unknown parts had melted. The vehicle was towed to the dealer, who informed the contact that the battery terminals and an unknown control module had melted due to an electrical failure; however, the vehicle had not yet been diagnosed. The vehicle was not repaired. The manufacturer was notified of the failure, but no assistance was provided. The failure mileage was approximately 90,000.

Filed Apr 15, 2026 · Brakes · 63,000 miles · GA

The contact owns a 2018 Kia Sedona. The contact stated that while driving at an undisclosed speed, the message "Check Auto Emergency System" was displayed and the brake warning light illuminated. Additionally, an unknown fluid was leaking near the front passenger’s side wheel. The vehicle was taken to the dealer, and an oil change was performed but the vehicle was not diagnosed or repaired. The manufacturer was made aware of the failure. The failure mileage was about 63,000.

Filed Mar 27, 2026 · Engine · PA

The vehicle is a 2018 Kia Sedona with approximately 122,000 miles that experienced a catastrophic engine failure resulting in complete engine seizure. The failure has been identified by an independent mechanic as a rod bearing issue. The engine remains intact and is available for inspection upon request. The vehicle is currently not operational and the battery has been disconnected. This vehicle is a family vehicle that regularly transports our four children. At the time of the incident, our [XXX] child was in the vehicle with us. The failure created a serious safety risk. While traveling on the highway, the vehicle suddenly lost power without warning, creating a hazardous situation in active traffic and increasing the risk of a collision. The presence of a young child in the vehicle further heightened the severity of the safety risk. The issue was preceded by a light tapping noise that began approximately 10 miles prior to the failure. Within about one minute before total failure, a loud squealing noise occurred, followed immediately by complete engine shutdown and loss of power. There were no meaningful warnings that would indicate imminent catastrophic failure in time to safely prevent the incident. The problem has been confirmed by an independent repair facility, which diagnosed the engine as seized due to internal failure consistent with rod bearing damage. A Kia dealership and Kia America have both been contacted and declined responsibility for repair. The vehicle has been regularly maintained, with routine oil changes performed as expected. The most recent oil change was completed approximately 2,000 miles prior to the failure. Insurance has confirmed this incident is not covered, as it is a mechanical failure and not the result of an accident or external damage. The vehicle has not been physically inspected by the manufacturer. Police were not involved. This type of failure is consistent with widely reported engine defects across Kia vehicles i INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFOR

Filed Nov 30, 2025 · Seat belts · PR

My [XXX] son pulled the seatbelt so tight it got wrapped around his neck. When I pulled over to unbuckle it, it was stuck. I turned the car off and on again to try and loosen it, but it didn't work. In the emergency, I had to cut the seatbelt with scissors. It's the passenger seatbelt in the second row, next to the window. I reported the incident to Kia in Puerto Rico by phone. They never called me back. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Oct 24, 2025 · Airbags · MN

In 2022, our airbag light came on. On 5/10/2022 am Airbag recall was issued and it was fixed. The airbag computer/module was fixed. We got into an accident in August of 2022, and our airbags never went off. And the airbag light has never shut off since it was “fixed” May 2022. It’s now October 2025. They said nothing was wrong with it, after bringing the vehicle in multiple times. And now after bringing it in, again in August 2025, they said the entire passenger airbag unit needs to be replace and isn’t related to the airbag recall. It’s $800+ and Kia won’t do it since the warranty has expired and it’s “not related”. Still fighting with them over it. As the airbags recall in 2022 included a defect where the Airbag Control Unit (ACU) cover can contact a memory chip, potentially deactivating the airbags. This issue affects a range of models manufactured between July 2016 and January 2019 and can result in the airbags failing to deploy in an accident. Worst customer service and vehicle I’ve ever owned.

Filed Oct 15, 2025 · Engine · LA

While driving under normal conditions and normal operation, the engine lost power, began using excessive fuel, the inside of the vehicle smelled like fuel and white smoke began pouring out of the exhaust.

Filed Sep 21, 2025 · Body · OH

Driver Side door stuck in the closed position. Electric Motor does not work.

Filed Sep 14, 2025 · Engine, Suspension · OH · fire

There was a fire under my minivan as my husband was driving it, creating smoke and flames. He lost power to the van and had to coast to the right side of the highway where he came to a stop with the flames occurring. This is the family vehicle and I have small children. We had no warning lights or any indication that there would be a fire in my vehicle as the van had been running smoothly, and I had kept up with all recommended maintenance (see Carfax report). On July 31st, I was told by Kia America that there was a fire in the engine compartment and that it was inconclusive and they could not determine what started the fire. On August 15th, my father and husband went to Castrucci Kia (where the car was) and were shown that there were holes in the engine block, and the service representative Brandon stated that the engine failure had probably thrown some of the rods causing the holes in the lower engine block sparking a fire when the leaking oil hit the catalytic converter. My insurance was involved, but I was not able to obtain a settlement from them, but I kept up on all maintenance and adherence to Kia guidelines and my engine unexpectedly failed and caught on fire. I was told I would need a new engine at an approximate cost ranging from 12,000 to 15,000 dollars. I believe that my 2018 Kia Sedona's 3.3 L gasoline direct injection engine was manufactured defectively resulting in catastrophic engine failure, APPARENTLY puncturing the engine block, causing engine oil to leak and ignite a fire. Our attempts to address this critical issue with Kia have been met with significant resistance and delays. It appears that Kia refuses to take responsibility. There has been an escalating number of safety complaints and instances directly linked to the 3.3 L Kia V6 Lambda II engine. I appreciate your assistance in resolving this issue with KIA AMERICA and the local KIA service center where my vehicle is located

Used buying checklistWhat to check on a 2018 Kia Sedona before you buy

Compare the 2018 Kia Sedona

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Other model years

2002200320042005200620072008200920102011201220142015201620172018201920202021

Questions about the 2018 Kia Sedona

Is the 2018 Kia Sedona reliable?

Owners have filed 49 complaints about the 2018 Kia Sedona, fewer than a typical Sedona model year.

What is the 2018 Kia Sedona year score?

The 2018 Kia Sedona scores 88 out of 100 (good). The score compares it with the other model years of the Kia Sedona: 75 is a typical year, 50 means twice the usual complaints, and serious complaints and recalls lower it.

What is the most common problem with the 2018 Kia Sedona?

Engine and cooling, with 22 complaints. Next is electrical (11).

How many recalls does the 2018 Kia Sedona have?

3 recalls, covering air bags, electrical system and structure.

What year does the Kia Sedona have bad engine?

The Kia Sedona model years with the most engine complaints are 2016 (150 complaints), 2017 (62 complaints) and 2015 (53 complaints).

What gas mileage does the 2018 Kia Sedona get?

Official estimates for the 2018 Kia Sedona range from 19 to 21 mpg combined. The most efficient version (3.3L 6-cyl, FWD) gets 17-18 city and 22-25 highway.

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