Last updated: 2026-10-10

2021 Kia Soul Reliability Report
The 2021 KIA Soul has a good reliability standing, but owners report heavy oil burning and engine stalling that can end in a failed engine.
Recalls
2
Complaints
190
Complaint Rate
25.3per 10,000 sold
Est. Repair Cost
$437
Annual Fuel Cost
$1,950–$2,200
Detailed Score Breakdown
Component-weighted complaints normalized by sales volume
Independent repair cost ratings
Recall count weighted by severity
Breadth of reported problem categories
The Verdict
Above average among 2021 SUVs, yet one of the weaker Soul years because of oil burning and stalling engines.
Top Issues to Watch
- ENGINE (85)
- ENGINE AND ENGINE COOLING (36)
- POWER TRAIN (16)
Generation & Refresh (US)
2021 is year 2 of the Third generation (SK3).
- Redesigned for the 2020 model year.
- A refresh arrives in 2023.
- 3rd generation Soul (US).
What this means for buyers
Year 2 is typically a safer pick than the first model year — early issues are more likely to be identified, but the platform is still new.
If you're comparing prices, check 2020 (redesign year) vs 2021+ pricing and recalls.
2020: Third generation (SK3) Launch
Generation start — new platform.
2021: This Model Year
2021 is year 2 of the Third generation (SK3).
2023: Mid-Cycle Refresh
Updated features and styling tweaks.
Should You Buy the 2021 Kia Soul?
Buy with caution. This year holds a good reliability standing and sits above average among 2021 SUVs, but it is among the weaker of the eight Soul model years. Independent repair-cost data puts yearly repairs at $437, under the $466 class figure. The 2020 rates about the same, and the 2022 rates better.
Engine trouble dominates owner complaints. Many owners describe heavy oil burning, often a quart or more every 1,000 miles, with no leak and no warning light. Knocking, power loss, and highway stalling follow, sometimes ending in a dead engine. Stalls cluster between 57,000 and 72,000 miles. Federal recall records list 2 recalls, both in engine areas. Several owners say the recall visit did not stop the oil loss or the stalling. Separate reports describe losing drive at highway speed, with transmission failures around 34,130 to 37,500 miles.
Ask for engine and transmission repair records, and proof that all recall work was done. Ask how much oil the car uses between changes. The 2022 is worth a look, though it has had less time to collect complaints.
Compared to the 2022 Kia Soul, which scored 6 points higher. See also the 2020 Kia Soul for an earlier comparison.
Pros
- +Acceptable reliability score
- +$29 cheaper to maintain than avg subcompact SUVs
- +Infrequent unscheduled repairs
- +Low major repair risk (9%)
Cons
- −Above-average complaint rate for SUV
- −ENGINE issues reported (85 complaints)
- −ENGINE AND ENGINE COOLING: Excessive oil consumption, rough running, and stalling without warning lights... (36 complaints)
Compare 2021 Kia Soul With

2021 Hyundai Kona
Reliability: 63/100

2021 Nissan Kicks
Reliability: 78/100

2021 Buick Encore
Reliability: 80/100

2021 Jeep Renegade
Reliability: 75/100

2021 Chevrolet Trax
Reliability: 81/100
Common Problem Categories
Safety
LOW RISK- 2 manufacturer recalls issued
Other
HIGH RISK- ENGINE (85)
- ENGINE AND ENGINE COOLING (36)
Recall Overview
2
recalls on record
The 2021 Kia Soul carries 2 recalls — a low count. Authorized dealers repair any open recall free of charge, regardless of warranty status.
NHTSA.gov →Complaint Breakdown
25.3
per 10,000 soldSegment avg: 16.7
Safety Incidents
12
Crashes
3
Fires
5
Injuries
0
Deaths
NHTSA 4/5 Stars
Data sourced from NHTSA complaint filings and manufacturer recall notices. Complaint narratives are owner-reported.
2021 Kia Soul Recall Details
2 recalls have been issued for the 2021 Kia Soul. All recall repairs are performed free of charge at authorized dealerships.
ENGINE
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 service at 1-800-333-4542. Kia's number for this recall is SC209.
ENGINE AND ENGINE COOLING
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 800-333-4542. Kia's number for this recall is SC336.
Buying a used 2021 Kia Soul? Check its history first
Engine problems lead owner complaints about the 2021 Kia Soul, and 2 recalls were issued for it. A VIN check shows whether this car's recall work was done, plus accident, title, and odometer history.
- Accidents
- Open Recalls
- Title History
- Odometer Rollback
2021 Kia Soul NHTSA Safety Ratings
Overall Safety Rating
Crash Test Results by Configuration (expand)
Gas Powertrain
Rollover risk: 14.7%
Safety Technologies
Kia SoulRepair Costs & Maintenance
Maintenance Rating
4.5Maintenance rating: 4.5 out of 5Based on NHTSA complaint patterns, recall severity, and publicly available cost benchmarks.
Est. Annual Maintenance
$437
vs $466 avg for subcompact SUVs
vs $652 avg for all vehicles
Repair Frequency
0.2
unscheduled repair visits per year
Severe Repair Probability
9%
chance of a major repair
Annual Cost Comparison
Category-level averages derived from publicly available industry reports (AAA, CarMD). Model-level estimates produced by Auto Reliability Index.
Kia Soul Resale Value
The Kia Soul is estimated to retain about 69.5% of its original value after 5 years, based on observed used-car listings.
This benchmark covers the Kia Soul model overall and is not specific to the 2021 model year.
- Value Retained
- 69.5%
- Depreciation
- 30.5%
- Listings Analyzed
- 355
after 5 years
over the same period
U.S. used-car listings
Listings observed in . This is a historical market benchmark, not a current price quote.
Explore Kia Soul depreciation and resale value on CarResaleValue.comMPG & Annual Running Costs
Gas
27–31 MPG
Running cost: $2,400–$2,650/yr
Fuel + repair
25–29 city / 31–35 hwy MPG
Running cost includes EPA fuel-cost estimate and independent repair-cost data (repair cost estimated at model level). Excludes routine maintenance, depreciation, and insurance. Data as of 2021 EPA label cycle.
Gas trims
| Trim | Drive | Trans. | City | Hwy | Comb | Fuel Cost |
|---|---|---|---|---|---|---|
| Soul Eco dynamics 2.0L 4-cyl | Front-Wheel Drive | Automatic (variable gear ratios) | 29 | 35 | 31 | $1,950 |
| Soul 2.0L 4-cyl | Front-Wheel Drive | Automatic (variable gear ratios) | 28 | 33 | 30 | $2,000 |
| Soul 1.6L 4-cyl | Front-Wheel Drive | Automatic (AM-S7) | 27 | 32 | 29 | $2,050 |
| Soul 2.0L 4-cyl | Front-Wheel Drive | Manual 6-spd | 25 | 31 | 27 | $2,200 |
Used Buying Checklist
Key things to inspect or verify before purchasing a 2021 Kia Soul.
Pull the dipstick and compare the level to the date of the last oil change; a low reading points to oil burning.
Ask for oil-change records and look for short intervals or frequent top-offs between services.
Run the VIN through federal recall records and get dealer paperwork for any completed engine recall work.
Listen at cold start and under hard acceleration for knocking, ticking, rumbling, or grinding from the engine.
Drive at highway speed and watch for tachometer swings, surging, or revving without the car speeding up.
Ask whether the transmission or engine has been replaced and request the repair invoices.
Inspect the steering column and ignition for damage from a past theft attempt.
Check the roof for peeling paint and the passenger footwell for dampness or a mold smell.
2021 Kia Soul Common Problems by Component
190 owner complaints grouped by vehicle system.
ENGINE
85 complaintsSafety-relatedSoul engine problems across all model years
Heavy oil burning is the dominant complaint, often a quart or more every 1,000 miles with no visible leaks and no warning light. Many reports describe knocking, power loss, and stalling on highways, sometimes ending in seizure and a dealer verdict that the engine must be replaced. Several owners say a recall visit installed software and cleared codes, yet the oil loss and stalling returned. One filing describes a loud bang, a stall, and a fire that destroyed the car. Stalls cluster around 57,000 to 72,000 miles, though some oil burning starts much earlier.
ENGINE AND ENGINE COOLING
36 complaintsSoul engine problems across all model years
Excessive oil consumption, rough running, and stalling without warning lights fill these reports. Owners describe rumbling, grinding, or clunking from the engine, shuddering from a stop, and power loss at 35 to 40 mph. Most filings center on a dealer recall visit where owners say piston ring noise-sensing software was installed, after which the stalling or oil loss came back and some engines failed outright. Others say dealers declined recall work once the engine had already died. One report pairs low coolant with low oil, and another cites an overheating warning before failure.
POWER TRAIN
16 complaintsSafety-relatedSudden loss of drive at highway speed is the core pattern. The engine revs, the tachometer swings wildly, and the car slows sharply or will not move in drive or reverse. Several owners report transmission replacements, some on the same car twice, with failures clustering between 34,130 and 37,500 miles. One names the IVT. Some cases begin within the first few thousand miles. Other filings tie the power loss to oil burning and engine knocking. One crash-related report and another describe losing power at 70 mph in traffic, with drivers fearing a rear-end collision.
UNKNOWN OR OTHER (14 complaints)
UNKNOWN OR OTHER
14 complaintsSafety-relatedStalling, oil burning, and an engine that revs without moving the car show up here too, including at about 3,500 miles. Two reports describe thefts through the ignition, one ending in a police chase and a crash. Other complaints cite a long pause restarting after auto stop-start on a grade, peeling roof paint, a false not-in-park alarm, and waits of months for repairs. One fire-related filing involves a house fire with the parked car as a suspected origin, still under insurer investigation.
ELECTRICAL SYSTEM (10 complaints)
ELECTRICAL SYSTEM
10 complaintsSafety-relatedSudden loss of power while driving is the most serious pattern. Headlights, wipers, and the dash go dark, in one case at 65 mph in the rain with a key-not-detected message. Other reports describe stalls at red lights linked to auto stop-start, an engine that cranks but will not run, and a horn that fails repeatedly. Two drivers say the car sped up when they pressed the brake, one ending in a crash with 2 injuries. A theft attempt through the steering column also appears.
STEERING (9 complaints)
STEERING
9 complaintsFaults range from a steering wheel that seizes with a red warning light to clunking or popping from the column and a car that pulls right, then left after alignment. Lane-keeping assist reportedly goes inactive on long curves and fails to recenter. One new car lost power steering along with every electrical system at 55 mph. Several filings in this category actually describe oil consumption, stalling, or transmission replacement rather than steering trouble. Dealers often could not find a cause.
SERVICE BRAKES (6 complaints)
SERVICE BRAKES
6 complaintsSafety-relatedMost of these reports are crashes. Drivers describe a pedal that sinks to the floor or will not engage, and in some cases the car speeding up when the brake is pressed. Three filings say forward collision-avoidance assist and automatic emergency braking gave no alert and did not activate before an imminent collision. Five of the 6 complaints involve a crash. A separate report cites brake pads judged worn on a car with under 10,000 miles.
AIR BAGS (4 complaints)
AIR BAGS
4 complaintsSafety-relatedAirbags failing to deploy in hard frontal and side impacts is the main complaint, with front ends destroyed and frames bent. All 4 reports involve crashes, and 3 include injuries. One describes a seatbelt that did not keep a passenger off the steering wheel. Another describes a 50 mph crash followed by fire, an airbag that stayed inflated, and a driver door that would not open from the handle.
VISIBILITY/WIPER (2 complaints)
VISIBILITY/WIPER
2 complaintsNeither report involves the wipers. One describes roof paint peeling away in large sheets while driving, exposing bare metal and shedding debris onto traffic behind. The other describes a sunroof that shattered while the car sat parked with no sign of impact, plus a driver door window that broke the same way. With only 2 complaints, no wider pattern is clear.
STRUCTURE (2 complaints)
STRUCTURE
2 complaintsWater leaks into the passenger side, pooling on the floor and spreading mold into the back seat. Heavy condensation builds up inside the cabin along with it. The other complaint describes paint chipping and peeling in several places, matching roof paint reports filed under other categories for this car. Volume is low, with 2 complaints total.
When Do 2021 Kia Soul Problems Start?
Based on owner complaint patterns, here's when common issues tend to appear.
Best & Worst Kia Soul Years
Best Kia Soul Years to Buy
Based on reliability index scoreKia Soul Years to Avoid
2020
2021
(Current Model)
Kia Soul Reliability Score Trend
Scores 0–100. Higher is better. Current year highlighted.
| Year | Score | Rating |
|---|---|---|
| 2018 | 73/100 | Good |
| 2019 | 76/100 | Good |
| 2020 | 70/100 | Good |
| 2021 | 72/100 | Good |
| 2022 | 78/100 | Good |
| 2023 | 77/100 | Good |
| 2024 | 86/100 | Excellent |
| 2025 | 85/100 | Excellent |
Kia Soul Reliability Compared to Other Years
Frequently Asked Questions
Is the 2021 KIA Soul reliable?
What are the most common problems with the 2021 KIA Soul?
Does the 2021 KIA Soul burn oil?
Has the 2021 KIA Soul been recalled?
Is the 2021 KIA Soul better than the 2020 or 2022?
Don’t buy a 2021 Kia Soul without checking its VIN first — hidden accidents, title issues, and open recalls could cost you thousands.
How we score the 2021 Kia Soul
Of the four inputs behind this score, the 2021 Kia Soul does best on repair costs (90/100) and worst on complaint severity (47/100). Scores weight complaint severity at 35%, repair costs at 30%, recall impact at 20%, and the spread of complaints across systems at 15%, with complaint counts adjusted for US sales. Read the full methodology.
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