11 complaints reported

2018 Kia Soul POWER TRAIN,ENGINE

Owner-reported problems and safety issues filed with NHTSA. Review common failures, severity levels, and complaint trends over time.

Reports
11
Crashes
0
Fires
0
Injuries
0

Complaint Timeline

Chronological view of owner reports

Dec 2025

The vehicle has been well maintained. About 1.5 years ago, it experienced a fuel injector failure. All four injectors were replaced to ensure the health of the engine. Recently, while on an 8-hour trip, halfway through, the engine experienced a sudden loss of power on the highway, nearly resulting in a crash, and the check engine light illuminated. The car was towed to a Kia dealership, where they stated the engine had failed. Cylinders 3 and 4 have ring and valve damage. The car had been performing well with no issues or warning signs, such as a trouble light or high temperatures. All other diagnostics were rated green by Kia.

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Jun 2025
Dec 2025

The vehicle has been well maintained. About 1.5 years ago, it experienced a fuel injector failure. All four injectors were replaced to ensure the health of the engine. Recently, while on an 8-hour trip, halfway through, the engine experienced a sudden loss of power on the highway, nearly resulting in a crash, and the check engine light illuminated. The car was towed to a Kia dealership, where they stated the engine had failed. Cylinders 3 and 4 have ring and valve damage. The car had been performing well with no issues or warning signs, such as a trouble light or high temperatures. All other diagnostics were rated green by Kia.

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Jun 2025
Sep 2025

Description of the Problem: My 2018 Kia Soul has a recurring and unresolved safety issue involving sudden loss of power while driving. The check-engine light repeatedly comes on, and at times the vehicle will hesitate or lose acceleration unexpectedly, creating a risk of being unable to maintain speed in traffic. Chronology: This issue has been occurring for over a year. I have taken the vehicle to the Kia dealership multiple times for the same problem. Each time, the dealership has either been unable to diagnose the cause or has returned the vehicle stating the issue was repaired, but the problem returns within weeks. Most recently, the dealership kept the vehicle for over a month and still could not identify or resolve the cause of the power loss or the recurring check-engine light. They then instructed me to pick up the car and drive it until the warning light comes back on, despite my reporting that the vehicle loses power while driving and is unsafe to operate. Safety Concern: The loss of power happens without warning and can leave me unable to accelerate or maintain speed. This has made it unsafe to drive in normal traffic conditions, such as merging onto highways or crossing intersections. I cannot safely operate the vehicle in its current condition. Attempts to Resolve: All service has been performed at the same Kia dealership since the car was purchased new. Despite multiple repair visits, including a month-long stay at the dealership, the problem remains unresolved. Kia Customer Care has been contacted, but the issue continues with no effective resolution or repair. Reason for NHTSA Complaint: Because the malfunction involves sudden power loss and repeated failure of the authorized dealership to diagnose or repair the issue, I am reporting this as a potential safety defect. I am concerned that this may reflect a broader problem affecting this vehicle model.

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Jun 2025
Sep 2022

My vehicle randomly started making a knocking noise. We took it to our local mechanic who stated he has seen a lot of these come from the Kia line lately. the knocking noise comes from the rods. He said the cost to get this repaired would be $4,000-$5,000, since the bottom portion of the engine would need to be replaced. This car is not driveable. We are the 2nd owners and the car only has $65,000 miles on it. We bought the car from carmax in November 2021, and they did a full investigation and found no fault with the car. The rod knock started in March 2022. We are hoping there would be a recall on this, as we see from forums, we are not alone. The check engine light did not come on at any point.

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Sep 2022
Sep 2022

Driving on Route 79 on Labor Day weekend, at 70mph in the passing lane, my 2018 Kia Soul+ with 77574 miles refused to accelerate and then the engine completely stopped. We were able to get to the side of the road unharmed but the engine was completely dead. We called triple A and has it towed to a local garage I called Kia corporate because the car is not yet 5 years old and the garage thought it might be under warranty. The Kia consumer line 800-333-4KIA took 5 hours to reach a human but gave me a claim number and the representative said it had to be seen at a dealer but that I was likely covered. I advised I was the second owner and that when I was trying to find their number I tripped upon an optional product improvement campaign I was not made aware of. I was very suspicious and surprised. I asked repeatedly what happened if it was towed and not covered. And they said to call back but I should be ok. Kia towed it to the dealership. The dealer took 2 weeks to look at it and make a determination. They are stating that because I did not have the improvement campaign completed that they will not cover the engine. I was told to call back Kia corporate which I did and after 3 hours of waiting I was informed that there was nothing they can do that I was out of warranty because the improvement campaign that I was never notified of had not been completed on my car. They state that they sent a letter in November of 2021 but I did not receive it. I'm now being charged diagnostic fees by the dealership and they still want $11,000 and 4 to 6 weeks to do the necessary repairs. I still have a loan on the vehicle for $12, 321.46. I called Kia corporate back they will do nothing to assist me because it is out of warranty and I did not have the campaign improvement done because it was never sent as notification to me via email or phone and I did not receive the document they claim to have mailed. The supervisor I spoke with told me that there is nothing that KIA can do.

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Apr 2022
Jan 2022

My engine blew it just hit 80,000 miles on the dot and since I’m purchasing it threw Freedom Chevrolet Buick gmc by Ed Morse and not Kia directly my car cannot get fixed! I still owe a pretty penny and now I have no way of fixing when other Kia’s have had the same issue with engine blowing I just would like my car fixed. My safety and my kids what put in danger when it decided to do this On a busy road!

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Jan 2022
Jun 2021

While driving to work my engine began to knock, my oil light flickered and went out, and then I completely lost power. I took my 2018 Kia soul to a local mechanic and he confirmed that my engine was blown and would need to be replaced with only 78,388 miles on my vehicle.

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Jun 2021
May 2021

2018 kia soul+ with 2.0l engine has developed a rod knock at 86k miles. Kia customer service was made aware of the issue and has refused to to repair the vehicle. According to a kid certified technician at a kia dealership, the issue is the same as other kia vehicles with a recall for, "connecting rod excessive wear". Customer service was made aware of these findings and still refuses to issue recall. Engine currently runs, but can not be run for very long or driven due to eminent risk of catastrophic engine failure.

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Jan 2021
Feb 2021

JANUARY 21ST 2021, WENT TO A DEALERSHIP IN MIAMI AND PURCHASED A USED KIA SOUL PLUS. JANUARY 26TH 2021, AFTER LEAVING THE POST OFFICE CAR SLOWED DOWN AND CAME TO A STOP. OIL LIGHT WAS GLITCHING PRIOR TO THAT DAY. CAR WAS IN DRIVE AND COULDN'T SHIFT GEARS TO PARK OR NEUTRAL. HAD TO PUSH THE CAR INTO A PARKING LOT AND SIT. TOOK TO A KIA DEALERSHIP AND THEY REPLACED OIL GASKET. TOOK THE CAR HOME FEW DAYS DRIVING TO AND FROM WORK. FEBRUARY 9TH CAR BROKE DOWN AGAIN WHILE TURNING INSIDE PARKING SPOT. CAR BATTERY LIGHT AND OIL PRESSURE LIGHT WAS BOTH ON. CAR WENT BACK TO KIA DEALERSHIP THURSDAY 11TH. KIA LOOKED AT THE CAR STATING OIL SLUDGE WAS ALL INSIDE THE ENGINE AND REPAIRS WILL COST $9,000. USED CAR IS NOT UNDER WARRANTY.

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Jan 2021
Jan 2021

THE CHECK ENGINE LIGHT COMES ON WITH ENGINE CONTROL SYSTEMS AS THE CAUSE OF THE ISSUE I HAVE HAD IT TO THE DEALER 5 TIMES NOW. STILL ON FOR THE 6TH TIME NOW!!!! I WAS TOLD THAT THE RECALL WOULD FIX THIS AND IT HAS NOT

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Jan 2021
Apr 2020

MY CHECK ENGINE LIGHT CAME ON AND EVERY TIME I TOOK IT IN FOR SERVICE I WAS TOLD I USED BAD GAS AND TO CHANGE THE GAS. I WAS EVEN TOLD THE COMPUTER ON MY CAR NEEDED TO BE UPDATED AND UNTIL THEN THE CHECK ENGINE LIGHT WOULD COME ON AND MAY NOT GO OUT. MY CAR STOPPED IN THE MIDDLE OF THE STREET AND WOULDN'T MOVE.

Type: Vehicle, Vehicle: 2018 KIA SOUL, Manufacturer: Kia America, Inc.
Incident: Mar 2020

Trend Over Time

Complaints by year

Quick Summary

The 2018 Kia Soul has 11 POWER TRAIN,ENGINE complaints on file. Review the timeline above for detailed owner experiences.