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2021 Kia Sportage Engine Problems

11 owner-reported engine complaints from NHTSA data

11
Complaints
2
Fires
Jan 2025Nov 2025
Date Range

Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.

Owner Complaints (11)

criticalENGINE
Filed: Nov 2025

Your 2021 Kia Sportage with the 2.4L engine is burning through oil much faster than normal — you've had to add oil every 2 weeks between oil changes since around 80,000 miles to keep it from running dangerously low. This rapid oil loss can cause your engine to stall while driving or fail completely, and your engine now needs a full replacement. The fix will require replacing the engine entirely, which is an expensive repair that may be covered under warranty investigation.

NHTSA #: 11697338
criticalENGINE AND ENGINE COOLING,ELECTRICAL SYSTEM
FireFiled: Oct 2025

Your 2021 Kia Sportage caught fire while parked on the freeway shoulder at approximately 70,000 miles. The driver noticed smoke coming from under the hood, which quickly turned into visible flames, and the vehicle burned to the ground. Two occupants required medical treatment for smoke inhalation, and the cause of the fire has not yet been determined.

NHTSA #: 11690967
criticalENGINE
Filed: May 2025

Your engine shut down while driving after the check engine light and oil warning light came on. When the car was inspected, mechanics found two pieces of the engine block broken off and sitting in the cradle cover, indicating severe internal engine damage. This will likely require engine replacement or major internal repairs.

NHTSA #: 11662565
criticalENGINE
Filed: Jan 2025

Your car's knock sensor and camshaft position sensor are showing fault codes that could indicate a timing chain problem. While driving on the highway, your car suddenly wouldn't accelerate past 40 mph and your check engine light started flashing, creating a dangerous situation with traffic behind you. The dealership couldn't repair it with their current tools and had to tow your car to a Kia dealership for timing component repair or replacement.

NHTSA #: 11635069
highENGINE
Filed: Mar 2026

Your engine is producing smoke. This could indicate an internal issue that needs immediate attention, such as an oil leak, coolant issue, or burning components. We recommend having a mechanic inspect the engine as soon as possible to diagnose the source.

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NHTSA #: 11725117
highENGINE
Filed: Oct 2025

Your engine is burning through oil rapidly — within 1,500 miles of each oil change, your dipstick shows the oil level is completely dry, even though there are no visible leaks underneath your car and no warning light appears on your dashboard. This has happened consistently over your last three oil changes. You've been adding oil manually to prevent engine damage, but you're concerned the engine is burning oil prematurely. The dealer will need to diagnose why oil is disappearing without leaking and repair the underlying cause, which could involve internal engine components like piston rings or valve seals.

Parts you may need:

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NHTSA #: 11692991
highENGINE
Filed: Aug 2025

Your engine is consuming oil much faster than normal. Even after an oil change at 10,000 miles, the oil level drops significantly by 3,000 miles, despite no visible leaks and regular maintenance. You've noticed other owners reporting the same problem and are aware of potential recalls on newer Sportage models. The fix may involve diagnosing internal engine wear, checking piston rings or valve seals, or determining if a manufacturer recall applies to your vehicle.

Parts you may need:

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NHTSA #: 11682391
highENGINE AND ENGINE COOLING
Filed: Aug 2025

Your 2021 Kia Sportage lost engine power and couldn't accelerate while being driven, and the check engine light came on. The vehicle remained undrivable at the destination. This issue may be related to a known manufacturer recall (Campaign 25V099000) affecting engine and cooling systems.

NHTSA #: 11680688
highENGINE AND ENGINE COOLING
Filed: Aug 2025

Your 2021 Kia Sportage is consuming oil faster than normal — you had to add a quart between oil changes at 41,000 miles. Your car didn't show any warning light to alert you to the low oil level. You may want to check your oil level more frequently and have a dealer diagnose whether this is a known issue with your engine.

Parts you may need:

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NHTSA #: 11679132
highENGINE AND ENGINE COOLING,ENGINE
Filed: Sep 2024

Your low oil and engine warning lights came on while driving, and you noticed your car was burning through oil quickly. A mechanic found that your crankshaft and rocker arm had failed and need to be replaced. This happened at around 100,000 miles and requires engine repair work to install these new components.

Parts you may need:

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NHTSA #: 11616707
mediumENGINE
FireFiled: Jan 2022

The contact owned a 2021 Kia Sportage. The contact stated that upon pulling into a parking space on the third floor of a parking garage at her workplace, she smelled a strong burning odor. The contact also noticed smoke coming from underneath the driver's side of the hood. There were no warning lights illuminated. The contact turned off the vehicle and quickly exited it. The contact stated that the vehicle caught fire. The contact began to extinguish the fire with the assistance of sheriffs who used fire extinguishers until the fire department arrived and took over. There were no injuries sustained. A fire department report was filed. A police report was filed. The vehicle remained at the scene and was totaled. The dealer was notified of the failure. The manufacturer was notified of the failure and a case was opened. The contact was awaiting a call back from the manufacturer. The failure mileage was approximately 19,920.

NHTSA #: 11448187

Other 2021 Kia Sportage Issues