2021 KIA SOUL — Problems, Recalls & Safety Data

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4/5

★★★★

Safety Rating

241

Owner Complaints

21 Crashes 4 Fires

2

Recalls

ACTIVE RECALL

22

Service Bulletins

0

Investigations

Overview of the 2021 KIA SOUL

The 2021 KIA SOUL has received a total of 241 safety complaints filed with the National Highway Traffic Safety Administration (NHTSA). It earned an overall safety rating of 4 out of 5 stars in NHTSA's New Car Assessment Program crash tests. There have been 3 recall campaigns affecting this vehicle, covering issues with ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL, ENGINE. 22 technical service bulletins have been issued by Kia America, Inc. for this model year. The most commonly reported problems involve the Engine (96 complaints), Engine And Engine Cooling (33 complaints), and Unknown Or Other (22 complaints).

Recalls for the 2021 KIA SOUL

NHTSA has recorded 3 recalls for the 2021 KIA SOUL, potentially affecting up to 431,754 vehicles.

Recall 25V099000 — ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL

| 137,256 vehicles affected

Defect: Kia America, Inc. (Kia) is recalling certain 2021-2023 Seltos and Soul vehicles. The piston oil rings may have been manufactured incorrectly, which can result in engine damage.

Consequence: Engine damage can cause a vehicle stall or fire, increasing the risk of a crash or injury.

Remedy: Dealers will inspect and replace the engine as necessary, free of charge. Dealers will also install piston-ring noise sensing system (PNSS) software, free of charge. Owner notification letters were mailed April 4, 2025. Owners may contact Kia customer service at...

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Recall 21V259000 — ENGINE

| 147,249 vehicles affected

Defect: Kia Motors America (Kia) is recalling certain 2020-2021 Soul, and 2021 Seltos vehicles equipped with 2.0L Nu MPI engines. The piston oil rings may not have been properly heat-treated, which may result in engine damage.

Consequence: A damaged engine may stall, increasing the risk of a crash. In addition, oil may leak onto hot exhaust components, increasing the risk of a fire.

Remedy: Kia will notify owners, and dealers will inspect and, if necessary, replace the engine, free of charge. In addition, Kia will deploy Piston Ring Noise Sensing System (PNSS) software. The recall began June 11, 2021. Owners may contact Kia customer...

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Recall 21V259000 — ENGINE

| 147,249 vehicles affected

Defect: Kia Motors America (Kia) is recalling certain 2020-2021 Soul, and 2021 Seltos vehicles equipped with 2.0L Nu MPI engines. The piston oil rings may not have been properly heat-treated, which may result in engine damage.

Consequence: A damaged engine may stall, increasing the risk of a crash. In addition, oil may leak onto hot exhaust components, increasing the risk of a fire.

Remedy: Kia will notify owners, and dealers will inspect and, if necessary, replace the engine, free of charge. In addition, Kia will deploy Piston Ring Noise Sensing System (PNSS) software. The recall began June 11, 2021. Owners may contact Kia customer...

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Owner Complaints for the 2021 KIA SOUL

241 complaints have been filed with NHTSA for the 2021 KIA SOUL. Below is a breakdown by vehicle component.

Most Recent Complaints

#11719469 | ENGINE | | 88,200 miles
The contact owns a 2021 Kia Soul. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated, and the engine seized. The contact stated that nearby drivers assisted with pushing the vehicle to the shoulder of the roadway. The failure had occurred while driving on a busy highway. While attempting to restart the vehicle, the vehicle started; however, it was unsafe to drive the vehicle. The vehicle was towed 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. Prior to the engine seizing, the vehicle was consuming an excessive amount of engine oil. The contact stated that 3 to 4 quarts of oil needed to be added between oil changes. In addition, the contact stated that in 2021, the vehicle was repaired under NHTSA Campaign Number: 21V259000 (Engine). The contact stated that after the recall repair was performed, the excessive oil consumption started. The manufacturer was not made aware of the failure. The failure mileage was approximately 88,200.
Description of Incident: On February 13, 2026, at approximately 3:00 PM, I was driving my 2021 Kia Soul (VIN: [XXX] ) on Calvine Road in Elk Grove, CA. A vehicle suddenly merged into my path. I immediately attempted to apply the brakes, but the pedal failed to depress or engage normally. Despite the imminent collision, the Forward Collision-Avoidance Assist (FCA) failed to provide any alert, and the Automatic Emergency Braking (AEB) system did not activate. To avoid a high-speed rear-end collision, I was forced to perform an emergency steering maneuver toward the curb and into roadside bushes to stop the vehicle. This maneuver resulted in severe mechanical failure, including a broken driver-side axle, damaged rims, and broken brake pads. The dealership (Elk Grove Kia) has provided an estimate of $9,461.67 for these repairs but has failed to explain why the primary safety systems and service brakes failed to function as designed during this emergency. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
#11718935 | FORWARD COLLISION AVOIDANCE: WARNINGS | | N/A miles Crash
Description of Incident: On February 13, 2026, at approximately 3:00 PM, I was driving my 2021 Kia Soul (VIN: [XXX] ) on Calvine Road in Elk Grove, CA. A vehicle suddenly merged into my path. I immediately attempted to apply the brakes, but the pedal failed to depress or engage normally. Despite the imminent collision, the Forward Collision-Avoidance Assist (FCA) failed to provide any alert, and the Automatic Emergency Braking (AEB) system did not activate. To avoid a high-speed rear-end collision, I was forced to perform an emergency steering maneuver toward the curb and into roadside bushes to stop the vehicle. This maneuver resulted in severe mechanical failure, including a broken driver-side axle, damaged rims, and broken brake pads. The dealership (Elk Grove Kia) has provided an estimate of $9,461.67 for these repairs but has failed to explain why the primary safety systems and service brakes failed to function as designed during this emergency. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
#11718935 | SERVICE BRAKES | | N/A miles Crash
Description of Incident: On February 13, 2026, at approximately 3:00 PM, I was driving my 2021 Kia Soul (VIN: [XXX] ) on Calvine Road in Elk Grove, CA. A vehicle suddenly merged into my path. I immediately attempted to apply the brakes, but the pedal failed to depress or engage normally. Despite the imminent collision, the Forward Collision-Avoidance Assist (FCA) failed to provide any alert, and the Automatic Emergency Braking (AEB) system did not activate. To avoid a high-speed rear-end collision, I was forced to perform an emergency steering maneuver toward the curb and into roadside bushes to stop the vehicle. This maneuver resulted in severe mechanical failure, including a broken driver-side axle, damaged rims, and broken brake pads. The dealership (Elk Grove Kia) has provided an estimate of $9,461.67 for these repairs but has failed to explain why the primary safety systems and service brakes failed to function as designed during this emergency. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
#11718325 | ENGINE | | N/A miles
We are the 2nd owner of 2021 Kia Soul bought in July 2025. Took to a dealership for open recalls shortly after purchase. After supposedly passing the piston ring recall (NHTSA 21V259) for the next several months after it had severe oil consumption but other wise drove fine. Then immediately after our last oil change on Feb 13, 2026, less than 10 miles later the car stalled and was knocking badly. Towed to nearest dealership and after diagnostic was told engine needs replacing. Wants us to pay for it. The software update (Piston Ring Noise Sensing System or PNSS) installed during the recall visit did not fix the faulty piston rings and also failed to give any warning for the impending engine failure. We never had any check engine or oil pressure lights come on until this incident.

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Safety Rating for the 2021 KIA SOUL

The 2021 KIA SOUL received an overall safety rating of 4 out of 5 stars from NHTSA's New Car Assessment Program (NCAP).

Test Category Rating
Overall Rating ★★★★ (4/5)
Frontal Crash ★★★★ (4/5)
Side Crash ★★★★★ (5/5)
Rollover ★★★★ (4/5)

Safety ratings are based on controlled crash tests conducted by NHTSA. A 5-star rating indicates the highest level of occupant protection.

Technical Service Bulletins for the 2021 KIA SOUL

Kia America, Inc. has issued 22 technical service bulletins (TSBs) for the 2021 KIA SOUL. TSBs are notices sent by manufacturers to their dealers describing a known issue and the recommended repair procedure.

SC336YZ_TSB — ENGINE

This bulletin provides information related to the Technical Service Bulletin previously published under SC336 titled “Engine Inspection/Replacement and ECM Logic Improvement”.

WTY041_Reimb — ELECTRICAL SYSTEM

WARRANTY EXTENSION CAMPAIGN: REIMBURSEMENT FORM (WTY041) - This document is a Reimbursement Request form that was mailed with the customer letter advising them to submit the form if they had paid for repairs for this same matter prior to the warranty extension campaign program launch.

WTY041_OWNR — ELECTRICAL SYSTEM

WARRANTY EXTENSION CAMPAIGN: OWNER NOTIFICATION (WTY041) - This document is the owner notification advising that Kia is extending the New Vehicle Limited Warranty coverage, to all owners, for repairs related to the horn assembly in certain 2020-2025 MY Soul vehicles from 5 years / 60,000 miles to 10 years /...

WTY041_TSB — ELECTRICAL SYSTEM

TECHNICAL SERVICE BULLETIN: WARRANTY EXTENSION CAMPAIGN: HORN ASSEMBLY INSPECTION/REPLACEMENT (WTY041) - This bulletin provides information associated with the ‘Warranty Extension Program’ (WTY041) to inspect and, if necessary, replace the horn assembly on certain 2020-2025MY Soul (SK3) vehicles produced from November 15, 2018 through August 13, 2024, The affected vehicles may...

CS2306_TSB_R3 — ELECTRICAL SYSTEM

TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2306) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the procedure to upgrade the software logic of the...

CS2311A_OWNRSK3 — STRUCTURE

CUSTOMER SATISFACTION CAMPAIGN: OWNER NOTIFICATION - This document is the owner notification advising that Kia now has an additional vehicle modification available for installation to help deter or thwart attempted thefts. This modification consists of a theft deterrent ignition cylinder protector and will be available to you free of charge...

CS2310_TSB — ELECTRICAL SYSTEM

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 software logic in the Kia Genuine Remote Start Control Module on certain 2012-2022MY model vehicles listed on page 6. Vehicles equipped with a Kia Genuine...

SC199_TSB_R4 — ELECTRICAL SYSTEM

VOLUNTARY EMISSIONS SERVICE CAMPAIGN: IVT SOFTWARE LOGIC IMPROVEMENT AND/OR IVT REPLACEMENT (SC199) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. (This bulletin was previously referred as ‘SA424’ or ‘ELE 200’.) This bulletin provides...

TSB_BOD314 — LATCHES/LOCKS/LINKAGES:DOORS:LOCK

TECHNICAL SERVICE BULLETIN: OVERHEAD CONSOLE SUNGLASS DOOR-LATCH REPAIR - This bulletin provides information to repair the overhead console lamp assembly and sunglass door latch on some 2012-2023MY model vehicles listed in the table below, which may encounter the sunglass case of the overhead console lamp not closing properly.

CS2306_TSB_R1 — ELECTRICAL SYSTEM

TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: ANTI-THEFT S/W LOGIC UPGRADE & DECAL INSTALLATION (CS2306) - This bulletin has been revised to include additional information. New/revised sections of this bulletin are indicated by a black bar in the margin area. This bulletin provides the procedure to upgrade the software logic of the...

Showing 10 of 22 technical service bulletins.

NHTSA Investigations for the 2021 KIA SOUL

There are no NHTSA defect investigations on record for this vehicle.

Other Model Years of the KIA SOUL

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Other KIA Models

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