2014 Kia Soul powertrain problems
severe 53 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Owners have filed 53 powertrain complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
The failure pattern owners describe
Buyer takeaway: The 2014 Kia Soul with Theta II engine (especially 2.0L models) faces serious and well-documented powertrain defects: catastrophic rod bearing/engine failure with little warning, excessive oil consumption, catalytic converter clogging, and rare but dangerous engine fires. Even after manufacturer recalls, owners report denial of warranty coverage, repeat failures, and $8,000–$12,000+ out-of-pocket repairs. Buy carefully and budget for immediate engine inspection and potential replacement.
Owners of 2014 Kia Souls report a pattern of severe powertrain failures centered on the Theta II engine. The most common complaint is excessive oil consumption—as much as 1 quart every 1,000 miles—without visible external leaks. This progresses to engine knocking, loss of power, oil light activation, and eventually catastrophic rod bearing failure or complete engine seizure. Failures occur between 74,000 and 164,000 miles and are sometimes preceded by a ticking or knocking noise that increases with RPM.
Multiple owners describe how recall repairs (including knock sensor updates and catalytic converter replacements under campaign SC176) failed to prevent subsequent failures. Some vehicles lost power on highways or at intersections with no warning, creating dangerous situations. In rare cases, engines have caught fire without warning. Owners also report catalytic converter clogging linked to oil consumption, transmission shifting problems, and a recurring but unsolved check engine code (P050A) that dealers cannot permanently fix. Dealerships initially deny oil consumption is abnormal, then refuse warranty coverage citing incomplete documentation, leaving owners facing $8,000–$12,000 engine replacements out of pocket despite known class-action settlements.
Same Kia Soul powertrain reports on nearby years: 2012 · 2013 · 2015 · 2016 · 2017
Failure modes owners describe
Engine knocking/rod bearing failure
Multiple owners report catastrophic engine failure—rod bearing failure, complete engine seizure, and internal damage—often preceded by a ticking or knocking sound in the engine, oil starvation symptoms, and metallic debris in the oil. Failures typically occur between 74,000 and 164,000 miles. The Theta II engine on these vehicles is subject to class-action litigation and earlier recalls for similar defects, yet some failures occur even after recall repairs.
When: Between 74,000–164,000 miles; often within months of recall service or oil changes
Symptoms owners cite: Ticking or knock noise that increases with RPM; Sudden loss of power or acceleration; Engine stalling without warning; Metallic debris in oil; oil filter with metal shavings; Oil light and check engine light illumination; Vehicle enters limp mode (reduced power) at highway speeds
Codes mentioned: P1326 (Knock Sensor Detection System)
Repairs/costs cited: Complete engine replacement, typically $8,000–$12,000. Owners report denial of warranty coverage despite known defect. Some paid out of pocket despite active recalls.
Recalls/TSBs owners mention: Kia issued recall campaigns 19V120000 (SC176) for catalytic converter and engine software, but the scope only covered 1.6L models; 2.0L owners report identical symptoms but exclusion from recall. KSDS (Knock Sensor Detection System) settlement and extended warranty programs exist; some owners report Kia denied coverage citing incomplete diagnostics or bearing clearance test results, without full diagnostic workup.
Excessive oil consumption
Engine burns oil rapidly—commonly 1 quart per 1,000–1,500 miles—without visible external leaks. Oil level drops dangerously low within weeks of a full synthetic oil change. Dealerships initially deny the condition is abnormal. No smoke or burning smell initially reported, but eventually triggers oil light and check engine light as oil level reaches critical.
When: Typically surfaces after 75,000–100,000 miles; deteriorates progressively over 6+ months
Symptoms owners cite: Oil level drops 1 quart every 1,000–1,500 miles; No visible external leaks despite thorough inspection; No burning smell initially; Oil light illuminates when level falls critically low; Check engine light follows; Engine knock or ticking noise if consumption reaches extreme
Codes mentioned: P1326 (Knock Sensor Detection System)
Repairs/costs cited: Owners perform frequent top-ups. Root cause traced to engine defect; long-term remedy is engine replacement. Some dealers claim consumption is normal; others recommend oil analysis and consumption testing (drive cycles of 1,000 miles per test).
Recalls/TSBs owners mention: Kia extended warranty covers certain engines under KSDS settlement (knock-sensor related failures); however, coverage denied for pure oil consumption unless engine fails catastrophically. Some owners cite Kia knowledge of the defect but refusal to proactively address it under warranty.
Catalytic converter clogging/failure
Catalytic converter becomes clogged or fails, restricting exhaust flow and reducing engine power. Some failures occur after recall repair work (SC176 replacement and ECU upgrade). Owners report loss of acceleration, limp mode, and hesitation. The clogging is linked to excessive oil consumption—oil fouling the catalyst.
When: Can occur at lower mileage (74,000–125,000 miles); sometimes recurs after recall repair
Symptoms owners cite: Loss of power or inability to exceed 20–40 mph; Hesitation and jerking during acceleration; Check engine light (P0420 or similar catalytic-converter code); Vehicle stuck in lower gear or shifts hard; Loud engine noise under acceleration
Codes mentioned: P0420 (Catalyst System Efficiency Below Threshold), P1326 (Knock Sensor Detection System)
Repairs/costs cited: Catalytic converter replacement, typically $800–$2,100. Owners report that replacement alone does not resolve the problem if the root cause is internal engine damage or continued oil consumption; engine replacement may be required afterward. Some replacements covered under recall SC176.
Recalls/TSBs owners mention: Recall SC176 (Campaign 19V120000) addressed catalytic-converter and engine software on 1.6L models. Post-recall complaints indicate the repair is incomplete—loss of power and clogging recur. Some dealers claim the clogged converter is due to normal wear, not defect.
Engine fire/catastrophic thermal failure
In rare but severe cases, the engine ignites without warning while the vehicle is in motion. No preceding warning lights or overheating gauge abnormalities. Fire spreads rapidly, engulfing the engine compartment and interior in minutes. One incident resulted in complete vehicle destruction.
When: Can occur at relatively low mileage (under 75,000 miles reported in one case); sometimes immediately after check engine light activation (P1326 knock sensor code)
Symptoms owners cite: Smoke visible in engine compartment or through vents; Flames emerging from hood or front of vehicle; No warning from temperature or oil pressure gauges prior to fire; No check engine light prior to fire in some cases; Loss of brakes or throttle control in one incident
Codes mentioned: P1326 (Knock Sensor Detection System)
Repairs/costs cited: Vehicle totaled; fire damage prevents engine inspection. One owner reported police officer noting lock malfunction in Kia vehicles during fires.
Recalls/TSBs owners mention: No manufacturer response documented in narratives. One owner reported Kia focused on removing pictures from social media rather than investigating the root cause. NHTSA should investigate whether knock-sensor recall and engine defects contribute to thermal runaway or oil starvation leading to fire.
Unintended acceleration
Vehicle accelerates unexpectedly while brake pedal is depressed or at stop signs and red lights. Engine revs high without driver input. Condition is intermittent and difficult to reproduce. Occurs even when vehicle is stationary or at a complete stop. Shifting to neutral temporarily stops the condition; later it recurs.
When: Intermittent, occurring at various mileage points (reported at 20,000–41,000 miles); can happen during parking or at traffic lights
Symptoms owners cite: High engine revving while brakes applied; Unexpected forward lurch into intersection or traffic; Brake pedal unresponsive or ineffective; Noise from engine during high-rev event; Condition resolves temporarily when shifted to neutral or park and back to drive
Repairs/costs cited: No successful repairs documented. Dealers found no issues when tested or were unable to reproduce the failure. Problem persists after dealer visits.
Recalls/TSBs owners mention: Dealers declined to investigate or repair. No recalls or TSBs cited by owners for this symptom.
Check engine light—PO50A code (Cold Start Idle Air Control)
Check engine light illuminates with diagnostic code PO50A (Cold Start Idle Air Control System Performance). Code recurs after repair attempts. Dealers recommend PCM reprogramming, throttle body cleaning, and ECU logic updates, but Kia engineers acknowledge they have no permanent resolution and no ETA for a fix. Owners report the same code returning 2–3 times within months.
When: Recurring throughout ownership; documented from 2019 through 2020
Symptoms owners cite: Check engine light illumination; Rough idle when light is active; No loss of power or drivability at the time of light activation in some cases
Codes mentioned: P050A (Cold Start Idle Air Control System Performance)
Repairs/costs cited: Kia engineers recommend cleaning throttle body, upgrading PCM grounds, and performing capacitive discharge; however, they state PO50A is still under research with no resolution available and no ETA. Owners report dealer resetting adaptive values and returning the vehicle, only to have the light reappear within weeks.
Recalls/TSBs owners mention: Kia issued TSB for PO50A; however, engineers explicitly stated to owners that they are researching the issue and have no permanent fix. One owner provided Kia's written response indicating the defect is unresolved.
Transmission shifting problems and power loss
Vehicle hesitates to shift or remains stuck in one gear, causing severe loss of acceleration. Some owners report the vehicle will not shift into reverse, or it hunts for the correct gear repeatedly while driving. In one case, the vehicle required the driver to depress the accelerator pedal to manually manipulate the gear shifter. Related to engine power loss and catalytic-converter issues in some complaints.
When: At 20,000–100,000 miles; sometimes during or after recall repairs
Symptoms owners cite: Hesitation or refusal to shift gears; Vehicle stuck in second or lower gear; Inability to shift into reverse without manipulating accelerator pedal; Jerking or shuddering during gear changes; Loss of power or inability to accelerate beyond a certain speed; Vehicle hunts for correct gear repeatedly on highway
Codes mentioned: P1326 (Knock Sensor Detection System)
Repairs/costs cited: One owner had transmission diagnosed as defective and requiring replacement; repair was not completed. Another had catalytic converter replaced, which temporarily improved shifting but did not fully resolve the issue. In other cases, no root cause was identified or repair attempted.
Recalls/TSBs owners mention: Dealers provided no diagnosis in some cases or recommended transmission replacement without addressing underlying engine defects. No recalls or TSBs cited for transmission shifting in these narratives.
Synthesized from 53 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Common questions
How serious is the powertrain problem on the 2014 Kia Soul?
It's a meaningful issue. 53 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Across the 33 complaints that reported odometer mileage, most powertrain failures cluster between 47,401 and 93,000 miles, with the median around 80,000. A quarter of owners report trouble before 47,401; a quarter make it past 93,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.