FREE VEHICLE RESEARCH
2021 Kia Soul
The 2021 Kia Soul has 2 NHTSA safety recalls on file, 220 owner complaints, and gets about 29 mpg combined. Here's the full free record from NHTSA and the EPA.
SPECS
2021 Kia Soul at a glance
- Engine
- 4-cyl 1.6L
- Cylinders
- 4
- Displacement
- 1.6 L
- Drivetrain
- Front-Wheel Drive
- Transmission
- Automatic (AM-S7)
- Body
- Small Station Wagons
- Fuel
- Regular
Source: EPA / NHTSA vPIC, as of July 9, 2026.
SAFETY RECALLS · NHTSA
2 openEngine
13/04/2021
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.
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 service at 1-800-333-4542. Kia's number for this recall is SC209.
Engine And Engine Cooling
17/02/2025
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.
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 800-333-4542. Kia's number for this recall is SC336.
NHTSA has opened one or more investigations covering this model. Recalls can follow an investigation, so check NHTSA for the latest before you buy.
Open safety recalls are free to fix at any franchised dealer. What recalls mean → Source: NHTSA recalls, as of July 9, 2026. Recalls can be issued any time, confirm by VIN at nhtsa.gov before you buy.
OWNER COMPLAINTS · NHTSA
220 filed- 101
ENGINE
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 e
- 42
ENGINE AND ENGINE COOLING
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 a
- 21
POWER TRAIN
I am filing this complaint regarding my 2021 Kia Soul due to repeated engine and powertrain failures and concerns about the quality and safety of the repairs. While my vehicle was under Kia's 100,000-mile powertrain warranty, I repeatedly
- 15
UNKNOWN OR OTHER
Initial Breakdown: July 2024, my 2021 Kia Soul (under 40,000 miles) idled roughly and stalled while in motion. It restarted, but as a precaution, I towed it to Kia Greenbrier Chesapeake while it was operable. After diagnostics, the vehicle
- 10
ELECTRICAL SYSTEM
The entire car is dead from the engine to the key function completely dead. The car broke down 3 time in the middle of the street which could've caused a serious crash putting my safety and others at risk. The problem has been addressed to
- 9
STEERING
1. Component or System Malfunction Engine (internal piston/piston ring system) is malfunctioning. The vehicle exhibits clanking noises (“marbles in a can”) and cuts off or stalls unexpectedly while driving. The car is available for inspecti
Problems owners reported to the government, useful for spotting patterns, not proof any one car has them. What complaints mean → Source: NHTSA complaints, as of July 9, 2026. Owner-submitted reports, not verified diagnoses.
CRASH-TEST RATINGS · NHTSA NCAP
- Overall
- ★★★★☆
- Frontal
- ★★★★☆
- Side
- ★★★★★
- Rollover
- ★★★★☆
Government crash tests of this model; not every trim or year is tested. Source: NHTSA NCAP, as of July 9, 2026.
FUEL & RUNNING COST · U.S. EPA
- Combined
- 29 mpg
- City / Hwy
- 27 / 32
- Est. fuel / yr
- $2,150
- CO₂ / mi
- 309 g
EPA lab estimates; real mpg varies by how you drive. Source: EPA fueleconomy.gov, as of July 9, 2026. Annual cost assumes 15,000 mi/yr at EPA's reference price.
All figures above come from free U.S. government sources: NHTSA (recalls, complaints, investigations, crash tests) and the EPA (fuel economy and specs). We don't show market price, insurance cost, or proprietary reliability scores, because there's no free, reliable public source for them. For a verdict on a specific listing, with a fair-offer number and what to ask the seller, that's the VINly app.
BEFORE YOU BUY
What to check on this car
Confirm the recalls were fixed
This model has 2 open NHTSA recalls (including the engine). Recall repairs are free at the dealer, so ask the seller for proof the remedy was performed, or verify by VIN at nhtsa.gov before you buy.
Have a mechanic check the engine
Owners report problems with the engine more than anything else on this model. Call it out specifically during a pre-purchase inspection.
Watch for a pending investigation
NHTSA has an open investigation covering this model. A recall can follow an investigation, so check nhtsa.gov for the latest before you commit.
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Test-drive the basics
Cold start, full-lock steering both ways, firm brakes with no pulsing, smooth shifts, and every electronic feature. Warning lights should come on at key-on, then go out.
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Check the title and the VIN
Confirm the title status in hand matches the listing, and that the VIN matches across the dash, door jamb, and title. VINly does not show ownership or accident history, for that, run a paid report like Carfax.
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Ask the seller the right questions
Why they are selling, any service records, accident or panel-repaint history, how many owners, and whether any open recalls were completed.
See the full used-car inspection checklist. None of this replaces a hands-on inspection by a mechanic.
Quick answers
What is recalled on the 2021 Kia Soul? +
NHTSA lists 2 safety recalls for the 2021 Kia Soul, including the engine. See the full list above, and confirm by VIN at nhtsa.gov.
What gas mileage does the 2021 Kia Soul get? +
The EPA rates the 2021 Kia Soul at 29 mpg combined (27 city / 32 highway), about $2,150 a year in fuel.
How safe is the 2021 Kia Soul? +
NHTSA's NCAP program gives the 2021 Kia Soul 4 out of 5 stars overall, with 4 stars for rollover resistance.
What do owners complain about on the 2021 Kia Soul? +
Owners have filed 220 complaints with NHTSA for the 2021 Kia Soul, including 12 involving a crash. The most-reported area is engine.
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