5 Kia Sorento Engine Problems and How to Fix Them

Written By: Jessica Anvar Stotz
Legally Reviewed By: Jessica Anvar Stotz

Short answer: The most common problems with the Kia Sorento engine are engine stalling, oil leaks, engine fires (especially in Theta II engines), excessive oil consumption, and premature engine failure.

These issues arise from a combination of factors, including design flaws—particularly in the Theta II engine—poor lubrication, faulty components such as sensors or fuel pumps, and, in some cases, manufacturing defects that have led to recalls.

By staying on top of regular maintenance, addressing issues promptly through diagnostics, and keeping informed about recalls, you can help prevent or resolve these engine problems effectively.

Problem #1: Engine Stalling

• What it is: The engine may shut off unexpectedly while driving or while idling, creating both safety concerns and frustration for the driver.
• Potential causes: A faulty fuel pump disrupting proper fuel delivery; Dirty or failing fuel injectors affecting engine performance; Malfunctioning crankshaft or camshaft position sensors sending incorrect signals; Electrical problems within the ignition system interfering with engine timing
• Symptoms: Sudden loss of power while on the road; Rough idling or hesitation during acceleration; Difficulty restarting the engine after it stalls
• Potential fix: Replace the fuel pump or clean/replace faulty fuel injectors; Inspect and replace bad sensors as needed; Run a diagnostic scan to identify and address electrical or component failures; Update the engine control module (ECM) software if applicable

Problem #2: Oil Leaks

• What it is: Engine oil leaks can lead to reduced oil levels, inadequate lubrication, and eventually severe engine damage if not addressed.
• Potential causes: Worn valve cover or oil pan gaskets; Cracked or damaged oil pan; Loose or improperly installed oil filter
• Symptoms: Oil spots under the vehicle; Smell of burning oil, especially after driving; Visible oil residue on engine components; Low oil level or warning light on the dashboard
• Potential fix: Replace damaged gaskets and seals; Inspect, repair, or replace the oil pan if necessary; Confirm the oil filter is correctly installed and properly tightened

Problem #3: Engine Fires (Theta II Engine)

• What it is: Certain Kia Sorento models equipped with Theta II engines have been recalled due to the risk of spontaneous engine fires.
• Potential causes: Electrical short in the ABS/HECU module; Fuel leaks caused by improperly installed high-pressure fuel pipes
• Symptoms: Burning smell or smoke coming from the engine compartment; Dashboard warning lights, such as ABS or check engine; Fire occurring while driving or even when the vehicle is parked
• Potential fix: Check for and complete any open recalls; Replace defective ABS/HECU modules and high-pressure fuel pipes; Avoid parking the vehicle indoors until the problem has been resolved

Problem #4: Excessive Oil Consumption

• What it is: The engine uses more oil than normal, requiring frequent top-offs and potentially leading to long-term engine damage.
• Potential causes: Worn piston rings or valve seals; Design flaws in certain engines, especially the Theta II; Existing oil leaks
• Symptoms: Frequent need to add oil between scheduled oil changes; Blue smoke from the exhaust, indicating oil burning; Noticeable decrease in engine performance
• Potential fix: Rebuild or replace the engine in severe cases; Use high-quality synthetic oil to reduce consumption; Regularly monitor oil levels and top off as needed

Problem #5: Premature Engine Failure

• What it is: The engine may fail entirely due to internal damage, often requiring a complete engine replacement.
• Potential causes: Rod bearing failure leading to catastrophic damage; Poor lubrication from oil sludge or low oil levels; Manufacturing defects in the Theta II engine
• Symptoms: Knocking or ticking sounds coming from the engine; Sudden engine seizure; Check engine light illumination; Complete loss of power while driving
• Potential fix: Replace the engine (this may be covered under certain recalls or warranties); Maintain regular oil changes using the manufacturer-recommended oil type.

Is There a Kia Sorento Engine Recall?

As of now, there is no engine-related recall specifically for the 2025 Kia Sorento. However, there is a recall affecting certain 2024–2025 Sorento models, including the Hybrid and Plug-In Hybrid versions.

This recall is due to a software error in the Body Domain Control Unit (BDC), which may cause a loss of low beam headlights and taillights, potentially violating federal safety standards.

As of June 2025, there are no engine-related recalls for model years 2018 through 2025. Here’s a summary of other engine-related and major recalls for previous Kia Sorento models:

1. 2011–2014 Kia Sorento
2. Issue: Engine seizure or fire risk due to debris in the crankshaft oil passages.
3. Recall Campaign (Manufacturer Number) : SC147
4. Fix: Engine inspection and possible replacement.

• 2012–2014 Kia Sorento
• Issue: Brake fluid leak inside the Hydraulic Electronic Control Unit (HECU) causing electrical shorts and potential engine compartment fires.
• Recall Campaign (Manufacturer Numbers) : SC200, SC212, SC284
• Fix: HECU inspection/replacement and installation of a new multi-fuse.

• 2016–2017 Kia Sorento
• Issue: Improper heat treatment of crankshaft leading to bearing wear and engine failure.
• Recall Campaign (Manufacturer Number) : SC200
• Fix: Engine replacement if necessary.

• 2014–2015 Kia Sorento
• Issue: Electrical short in the HECU could cause an engine compartment fire.
• Recall Campaign (Manufacturer Number): 21V331
• Fix: HECU inspection and replacement, installation of a lower-amp fuse

Who Covers the Cost of My Kia Sorento Engine Repairs?

Responsibility for engine repair costs depends on several factors, including your vehicle’s warranty status, age, mileage, and whether the issue is part of a recall or service campaign. Here’s how coverage typically breaks down:

1. Covered Under Warranty
If your Kia Sorento is still within its Powertrain Warranty—generally 10 years or 100,000 miles for the original owner in the U.S.—Kia will cover the full cost of engine repairs or replacement. This includes both parts and labor, provided the work is done at an authorized Kia dealership.

2. Part of a Recall or Service Campaign
 If the engine issue falls under an official recall, Kia is required to perform the necessary repairs at no cost to you. Recalls are honored regardless of warranty status. You can check for active recalls by entering your VIN on Kia’s official recall website.

3. Out of Warranty
If your Sorento is no longer under warranty and the issue is not linked to a recall, you are typically responsible for the repair costs. That said, Kia may offer goodwill assistance in certain situations, especially if you have a record of routine maintenance or if the issue is known and has affected many other owners. Contacting Kia customer service and escalating your case can sometimes lead to partial or full coverage.

4. Extended Warranty or Third-Party Coverage
If you purchased an extended warranty—whether through Kia or a third-party provider—engine repairs may be covered depending on the terms of your plan. Be sure to review your policy to understand what’s included, as well as any deductibles or limitations that may apply.

How the Lemon Law Can Assist with Repeat Repairs

If your Kia Sorento has been repeated for repeat warranty engine issues—such as stalling, excessive oil consumption, or sudden power loss—it may qualify as a lemon under state or federal lemon laws.

These laws typically apply when a vehicle experiences multiple repair attempts for the same defect that substantially impairs its safety, functionality, or value.

When a vehicle meets the criteria, consumers may be entitled to remedies such as a full refund, a replacement vehicle, or a cash settlement.

In cases involving refunds or replacements, the manufacturer may deduct a reasonable usage fee based on the miles driven prior to the initial repair attempt rendering it a lemon.

If a replacement vehicle is provided, owners could be responsible for paying any difference in cost if the new model is priced higher than the original Sorento.

One key advantage of pursuing a lemon law claim is that many states require the manufacturer to cover your legal fees and costs if you win the case.

This provision makes obtaining professional legal assistance more accessible, without upfront expenses.

At the Lemon Law Experts, we have been assisting Kia Sorento owners and other drivers since 2009. Our experienced attorneys work closely with clients facing ongoing engine troubles and other serious defects.

We are committed to securing the most favorable results, whether that means compensation, vehicle replacement, or another legal solution.

If your Kia Sorento has had repeated engine problems and repairs have failed to resolve them, don’t delay.

Reach out today for a free consultation to see if your vehicle qualifies for protection under the lemon law.