2021 Kia Soul problems & reliability
222 owner complaints filed with NHTSA for the 2021 Kia Soul, alongside 2 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
4 complaints report injuries (5 injured).
Federal crash records (FARS 2020–2023): 2021 Kia Soul vehicles were involved in 36 fatal crashes with 23 occupant deaths. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Engine → | 127 | 57% |
| Engine and Engine Cooling → | 42 | 19% |
| Power Train → | 26 | 12% |
| Unknown OR Other | 25 | 11% |
| Electrical System → | 15 | 7% |
| Fuel/propulsion System → | 10 | 5% |
| Service Brakes → | 10 | 5% |
| Steering | 9 | 4% |
| Visibility/wiper | 6 | 3% |
| Exterior Lighting | 5 | 2% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Mileage when problems occurred
Half of the failures with a reported odometer reading occurred by 62,000 miles (middle 50% between 21,100 and 88,200 miles), based on 57 complaints that included mileage.
Complaints by incident year
What owners report
“Took my vehicle in a year ago for the oil piston recall to the Kia dealer in North Huntington, Pa. I was told they corrected the recall during other servicing. My vehicle just broke down and is unable to be driven due to this unresolved issue.”
Unknown OR Other · filed Jul 20, 2026
“Vehicle: 2021 Kia Soul LX, 2.0L Engine Subject: Loss of Motive Power and Stall While Driving Under Recall SC336 Description of Incident: On 07/02 @ roughly 6:15PM, while driving on the highway I-35E at approximately 60 MPH, my vehicle's engine experienced a sudden and complete loss of engine power, stalling while in…”
Engine · filed Jul 3, 2026
“The contact owns a 2021 Kia Soul. The contact received notification of NHTSA Campaign Number: 25V099000 (Engine and Engine Cooling); however, the part to do the recall repair was not yet available. The contact stated that while driving at an undisclosed speed, the vehicle lost automotive power while the accelerator…”
Engine and Engine Cooling · filed Jul 1, 2026
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Kia 25V099 Piston Oil Ring Recall Effectiveness
Audit Query AQ25001 · opened Aug 6, 2025 · closed Dec 18, 2025
Technical service bulletins
116 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2021 Kia Soul. The 10 most recent:
TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION: CYLINDER PROTECTOR & DECAL INSTALLATION (CS2311) - This bulletin has been revised to include additional information. New/revised sections of…
CS2311_TSB_R4 · Service Bulletin/Repair Instructions · issued Jun 9, 2026
TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION (CS2312) - This bulletin has been revised to include additional information. New/revised sections of…
CS2312_TSB_R2 · Service Bulletin/Repair Instructions · issued Jun 8, 2026
TECHNICAL SERVICE BULLETIN: KEY AND CYLINDER SET REPLACEMENT - This bulletin provides information to replace the driver’s door lock and trunk lid key cylinders on some 2019-2024MY Kia vehicles listed below. On affected…
TSB_BOD336 · Service Bulletin/Repair Instructions · issued Jun 4, 2026
TECHNICAL SERVICE BULLETIN: INFOTAINMENT SYSTEM SOFTWARE UPDATE USING UPDATE.KIA.COM - This bulletin provides information and service procedures for updating the infotainment systems on applicable Kia vehicles using the…
TSB_ELE422 · Service Bulletin/Repair Instructions · issued May 28, 2026
VOLUNTARY EMISSIONS SERVICE CAMPAIGN: OWNER RENOTIFICATION (SC199 FL301) - This document is the owner renotification advising that Kia is conducting Voluntary Service Campaign to update the software programming on the…
SC199_OWNR_SK3_3 · Emissions · issued Feb 19, 2026
TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION (CS2312) - This bulletin has been revised to include additional information. New/revised sections of…
TSB_CS2312_R1 · Service Bulletin/Repair Instructions · issued Feb 19, 2026
CUSTOMER SATISFACTION CAMPAIGN: POSTCARD OWNER RENOTIFICATION (CS2311) - This document is the owner renotification advising that Kia is conducting Customer Satisfaction Campaign. Kia has developed a new zinc-reinforced…
CS2311_OWNR_PC201 · Other · issued Dec 19, 2025
TECHNICAL SERVICE BULLETIN: CUSTOMER SATISFACTION: THEFT DETERRENT IGNITION CYLINDER PROTECTOR AND DECAL INSTALLATION (CS2312) - This bulletin provides information to install a Theft Deterrent Ignition Cylinder…
TSB_CS2312 · Service Bulletin/Repair Instructions · issued Dec 18, 2025
CUSTOMER SATISFACTION CAMPAIGN: OWNER NOTIFICATION (CS2312) - This document is the owner notification advising that Kia is conducting Customer Satisfaction Campaign. A software upgrade that addresses the social media…
CS2312_OWNR · Other · issued Dec 17, 2025
PITSTOP: TECHNICAL OPERATIONS: EXTERNAL DAMAGE TO ULTRASONIC SENSOR: This Pitstop provides information related to Parking Distance Warning (PDW) alerts and repairs involving ultrasonic sensors. The PDW system alerts the…
PS797 · Other · issued Dec 9, 2025
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2021 Kia Soul has 2 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2021 Kia Soul?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.
- · Owners most often reported problems around 62,000 miles — budget accordingly if the car is approaching that mileage.