Home · 2018 Kia Forte Koup · Complaints

What 134 owners told NHTSA about the 2018 Kia Forte Koup

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (134)Crash / fire / injury (15)Engine (57)Airbags (16)Electrical system (16)Speed control (10)Transmission & drivetrain (8)Body & structure (7)Fuel system (7)Lights (6)Steering (5)Brakes (4)

Newest first · 134 complaints · page 2 of 6

Mar 7, 2025Engine

The contact owns a 2018 Kia Forte. The contact stated that while driving 35, the vehicle slowed down, there was an engine misfire, and the vehicle stalled. There were no warning lights illuminated. The contact called the local dealer, but the vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 150,000.

NHTSA ODI 11646980

Dec 31, 2024Electrical systemSeats

My radio speakers will sound like there are blown. At a certain speed, I will break and the seat will move in the passenger side and sometimes in the driver side by itself.

NHTSA ODI 11633467

Dec 14, 2024

When the key is in the ignition and the car is running to warm up and I've forgotten something in my home and need to retrieve my item the car has automatically locks all of the doors with the car still running, I only was given one (1) key, so I have to eithe remember to roll down a window or leave a door standing open so I can get back in the car. To me it's a safety issue. What if I had a child in a car seat and this happened

NHTSA ODI 11630720

Nov 21, 2024Engine

The contact owns a 2018 Kia Forte. The contact stated while driving 55 MPH, the engine was running unusually rough. The oil warning light was illuminated. In addition, the engine seized. The vehicle was restarted and driven to the residence. The vehicle was taken to the dealer where it was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle had been taken to the dealer two days prior to the failure and the dealer confirmed there were metal shavings in the oil pan. The manufacturer was not made aware of the failure. The failure mileage was approximately 163,000.

NHTSA ODI 11626721

Nov 18, 2024Airbags

The switch needed to be replaced by kia in prescott valley because it was a recall, they replaced my switch, and a few weeks later now my airbag light is on and they no longer work, and they won't take care of it, the lady proceeded to tell me they didn't replace the switch when I have the proof that they did indeed do it, and now my airbags no longer work, if I get into an accident because they messed it up and my airbags no longer work I will have a lawsuit against them for not wanting to take care of a recall they couldn't do right in the first place.

NHTSA ODI 11626069

Nov 14, 2024Lights

The left rear blinker light has gone out 4 times in the last 2 years. The most recent replacement for the passenger rear blinker stopped working within 12 hours of replacement. No other lights have needed replacing until the last replacment blinker light had gone out and i became aware that both passenger running tail lights were out, my license plate light on the passenger side is out the white bottom light that's blinks when I lock the car with the key remote is out as well. When looking into what would cause this to happen I came a cross information that is an on going issue that keeps occurring in the same cars with the same make model and year that a recall should or is expected to be done. I have not paid for bulbs to be replaced it's a task car owners can perform now that all lights are not working i will be taking it in to get my vehicle working so it can be driven safely.

NHTSA ODI 11625127

Nov 5, 2024Electrical system

The contact owns a 2018 Kia Forte. The contact stated that while driving approximately 35 MPH, the vehicle inadvertently stalled and failed to restart. The vehicle was towed to an independent mechanic, where it was diagnosed that the positive(+) battery terminal was faulty and needed to be replaced. The vehicle was not repaired. The local dealer was notified of the failure, but no assistance was offered. The manufacturer was not notified of the failure. The failure mileage was 120,000.

NHTSA ODI 11623630

Sep 8, 2024Engine

I noitce a werid sound the cooling fan was making and car started run different so I turn around came home park it came out few hrs later ND oil spilled on floor and all over the engine

NHTSA ODI 11613349

Aug 16, 2024SteeringEngine

Driving car at about 40/mph and suddenly acceleration was lost. Released foot off of gas pedal and reapplied pressure but car continued to lose velocity and came to a full stop. Engine is now unable to turn over and car is completely not functional

NHTSA ODI 11608921

Jul 17, 2024Electrical systemSpeed control

2018 Kia Forte, purchased certified used June 2022, will randomly go into ECO or Sport mode on startup or while the vehicle is in motion. Vehicle is not equipped with Drive Mode control buttons, indicating that ECO/Sport modes are not supposed to be active feature. While I vaguely remember the mode change occurring during previous two years of my ownership, the first noticeable incident in 2024 was of the vehicle going into ECO mode (green indicator light) happen upon startup the morning of 5/26/24. This was noticeable due to the fact that the ECO mode slow down caused me to nearly be rear-ended by a semi while merging onto the freeway. The vehicle remained stuck in ECO mode for several weeks. On the morning of 6/10/24, while driving, vehicle began to sputter/hesitate and ECO light blinked on/off then switched to Sport (yellow indicator light) mode and vehicle surged forward. Vehicle then switched back to ECO mode and it remained in this mode until the morning of 6/13/24, at which point it went into Sport mode upon startup. It went back into Normal mode (no indicator light) upon startup the evening of 6/13/24. Vehicle was inspective by selling dealership 6/15/24 and they could not duplicate the issue nor pull trouble codes. Remained in Normal mode until the evening of 7/15/24, at which point it switched back to ECO mode. Dealership has been notified. It should be known that ECO mode slows down the vehicle response to conserve fuel, Sport mode speeds it up. While these features can be useful when wanted and properly installed with the appropriate controls, the randomness in which these features engage make them a safety hazard, especially considering the control buttons are not installed. Based on NHTSA VIN information the trim package of my vehicle, LX (which KIA America has yet to confirm even though I have made multiple inquiries), Drive mode is an optional feature which was not activated by the original/first owner.

NHTSA ODI 11603051

Jul 3, 2024Engine

Check engine light came on, engine started vibrating while driving on highway and lost power. Could not continue driving, vehicle was towed to service workshop.

NHTSA ODI 11598552

Jun 26, 2024Driver assistance

My traction control light is coming on. It stops the transmission from working while I'm driving down the road at 55 miles an hour an the car stalls. And I have to restart the car. Sometimes the light will go off. Sometimes it wont for a while have to let car sit with the engine off but I have to shut the car down. And then start it back up. This is an accident waiting to happen. Sometimes this happens 7 times a day.And usually it's when i'm on about going 55 or 60 on a beltway was almost hit twice mechanic don't know what wrong no codes

NHTSA ODI 11596732

Jun 25, 2024Transmission & drivetrainEngine

The contact owns a 2018 Kia Forte. The contact stated that while the vehicle was running, the check engine warning light illuminated. There was an abnormally loud roaring sound detected while accelerating. While depressing the accelerator pedal, the vehicle was slow to respond while shifting or reversing. The contact stated that the vehicle failed to shift to second gear. The vehicle was taken to an independent mechanic, who determined that the failure was due to the electrical solenoid, P337, shift valve, and transmission. The contact called the local dealer, where an appointment was scheduled; however, the vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 143,000.

NHTSA ODI 11596437

Apr 25, 2024Latches & locks

The contact owns a 2018 Kia Forte. The contact stated that while the vehicle was parked and turned off, the trunk door erroneously opened. The contact stated that the failure had occurred on several occasions. The cause of the failure was not yet determined. The manufacturer and local dealer were not notified of the failure. The failure mileage was 33,500.

NHTSA ODI 11585280

Apr 20, 2024Engine

1945 Credit one: 65 Nordstrom: 116 Taxes: 133 Discover: 148 Care credit: 54 Cap: 60 (small) Cap: 187 (big) *75* 2018 Kia Forte was brought to a Kia Dealership within standard time frame since release of Ignition Coil recall to remedy said issue (released recall dated: 2020). Ignition Coil has since went out, resulting in the 2018 Kia Forte being brought back to the [same] Kia Dealership for the [same] repair. Kia Dealership has stated the Ignition Coil that was placed in 2018 Kia Forte is not “under warranty”, and full market value price plus diagnostic, and labor is warranted. It appears the mileage of when the original 2020 Ignition Coil repair was complete, is “coincidentally” the exact mileage the Ignition Coil went out again (20k miles). Assuming the Ignition Coil used to remedy said recall back in 2020 is faulty; as Ignition Coils should last within 80k-110k miles. Thus, should not be the financial burden or responsibility of the consumer.

NHTSA ODI 11584226

Apr 18, 2024AirbagsSeat beltsCrash1 injury

I got into a car accident and my air bags never deployed and the seat beat didn’t lock so I cause me to get jerked and my head hit the side door and I messed up my left shoulder and arm in the process of holding myself from hitting the steering wheel and my breaks didn’t stop when I got hit and pressed down my car got stuck on drive accelerating on its own after I had my foot on break to stop the car

NHTSA ODI 11583731

Mar 31, 2024Speed controlEngine

Started my car it was making a tapping noise. I tried driving home the noise got worse and my car didn’t want to accelerate very much. I noticed a recall for other 2018 Kia fortes as mine is doing exactly what others are but my car isn’t included in the recall. I think the recall outlook is bigger than imagined.

NHTSA ODI 11580324

Mar 25, 2024Engine

My vehicle has 90,000 miles on it. I was leaving from work when I started to drive it, it was making a noise so I checked before leaving the parking lot I didn’t see anything wrong. As I drove home the noise got worse and the car was having problems accelerating. The noise turned into a thumping and the car slowed even more. When I got home I realized the engine is knocking and there’s a recall out but not for my VIN. It’s having the same issue as other 2018 Kia fortes with engine malfunctions.

NHTSA ODI 11579217

Feb 23, 2024Engine

The contact owns a 2018 Kia Forte. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to an independent mechanic and a DTC code indicated there was a misfire in cylinder #2 and there was a fuel error ratio fault. The vehicle was taken to the dealer, however the vehicle was not diagnosed or repaired. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 74,000.

NHTSA ODI 11573562

Feb 23, 2024Suspension

Front lower control arms were entirely rusted out to the point that one had completely detached and the other was nearly detached. Had the second arm rusted out, the risk of loosing control of the vehicle was incredibly high. Vehicle has under 75k miles and is well maintained. Was replaced and mechanic was even surprised at the state of the rise of the vehicle.

NHTSA ODI 11573694

Feb 22, 2024Engine

My car stalled in the middle of a busy road at 80k miles on the way to get an oil change. Never had any issues or lights on with the vehicle prior and oil maintenance was performed regularly. My safety was impacted due to not being able to get of of car in the middle of the street and could have caused a major accident or gotten killed on that road from cars speeding past. My car has been at the Kia service center for 4 months with no confirmation of when this can be resolved due to my specific engine being on back order. Kia has been known to produce bad engines and has a prior lawsuit out for other models, I believe this model should be included as well since it did the exact same thing as previous models that are no longer sold due to engine failures.I have reached out to Kia corporate several times a week since December and have had no success in persuading them to take this matter more seriously. I have explained not only my personal concern but also the safety concern to multiple people in the corporation and have had no relief emotionally about this and have been placed in an even tighter situation not being provided a replacement or rental in the meantime. I am also put in a financial bind due to being out of a car for this long and having to spend thousands on transportation, car payments, and car insurance on a car that hasn’t been in my possession due to a system failure that was out of my control and Kia’s known problem of engine malfunctions. Thank you in advance for your assistance and time spent listening to my concerns I hope to have all of this resolved for me and current/future Kia owners.

NHTSA ODI 11573379

Feb 21, 2024Engine

While driving my car it just dies. I put a new battery in it I've checked the alternator I've done all of those things and I have no check engine light nothing no kind of warning or anything. I know there is a recall for this happening but my VIN number is not showing that I have a recall for it.

NHTSA ODI 11573161

Feb 11, 2024AirbagsBrakesCrash1 injury

Brakes completely locked up during my attempt to stop the vehicle does have abs and that is supposed to allow the wheels to keep moving so that you can try to maneuver and when I made contact with the other vehicle the airbag never deployed

NHTSA ODI 11571352

Feb 9, 2024AirbagsBody & structure

Trunk opens unexpectedly

NHTSA ODI 11571085

Feb 3, 2024Airbags

The airbag lights indicator on the dash are going on and off periodically as I used the vehicle

NHTSA ODI 11569646

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Working with the data? Download all 134 complaints as CSV · fetched from NHTSA July 26, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2018 Kia Forte Koup verdict →