2021 Kia Sorento
Vehicle Specs & Maintenance Data
The 2021 Kia Sorento maintenance specs on this page cover the key fluids, torque values, and wear items you need for routine service. Use these numbers as a quick reference when performing oil changes, tire rotations, brake jobs, and other scheduled maintenance on your Kia Sorento.
For oil changes, the 2021 Kia Sorento takes 0W-20 Full Synthetic motor oil with a capacity of 5.1 quarts. Brake fluid type is DOT 3, the recommended coolant is Phosphate-based Green/Blue, and transmission fluid is SP-IV-M (ATF). Always use the manufacturer-recommended fluids to maintain warranty coverage and engine longevity.
When mounting wheels on the Kia Sorento, torque the lug nuts to 79-94 ft-lbs using a calibrated torque wrench. Over- or under-torquing can lead to warped brake rotors or loose wheels. Re-torque after 50 to 100 miles on newly installed wheels.
Owners of the 2021 Kia Sorento have reported 5 common issues including "Turbocharger Oil Supply Pipe Cracking", "DCT Transmission Oil Pump Failure" and "Tow Hitch Wiring Harness Fire Risk". Scroll down to the Diagnostics tab for detailed descriptions, solutions, and estimated repair costs.
There are 4 NHTSA safety recalls on file for the 2021 Kia Sorento. Check the Recalls tab below for full details.
Specifications on this page are compiled from multiple publicly available sources including manufacturer documentation, NHTSA data, and automotive databases. Always cross-reference with your owner's manual or official factory documentation before purchasing parts or performing any service.
The 2021 Kia Sorento uses 0W-20 Full Synthetic motor oil (5.1 qt capacity), requires lug nuts torqued to 79-94 ft-lbs, takes DOT 3 brake fluid.
Manufacturer-recommended maintenance schedule for the 2021 Kia Sorento. Always verify intervals against your owner's manual.
Enter a diagnostic trouble code to see causes, symptoms, and fixes for the 2021 Kia Sorento.
Common problems reported by 2021 Kia Sorento owners, with recommended fixes and estimated repair costs.
Turbocharger Oil Supply Pipe Cracking
On 2.5L turbocharged models, the oil supply pipe to the turbocharger may crack, resulting in an oil leak in the engine compartment. This can cause a burning oil smell, smoke from under the hood, and if left unrepaired, an engine compartment fire.
Kia issued a recall to inspect and replace the turbocharger oil supply pipe free of charge. Contact your dealer to verify VIN coverage.
Est. Cost: Covered under recallDCT Transmission Oil Pump Failure
The 8-speed dual-clutch transmission oil pump may malfunction, impairing the vehicle's fail-safe limited-mobility drive mode and potentially causing a complete loss of drive power. The vehicle may suddenly lose acceleration capability while on the road.
Kia issued a recall for 2021-2022 Sorento models with DCT. Dealers will inspect and replace the transmission as necessary and update the TCU software free of charge. TSB TRA108 also addresses AWD coupling clunk noises during speed changes.
Est. Cost: Covered under recallTow Hitch Wiring Harness Fire Risk
Vehicles equipped with a Genuine Kia tow hitch harness may experience debris and moisture accumulation on the tow hitch harness module printed circuit board, which can cause an electrical short and result in a fire while driving or parked.
Kia issued a recall for affected Sorento models with the tow hitch package. Dealers will inspect and replace the tow hitch wiring harness module free of charge.
Est. Cost: Covered under recallIncorrect Spare Tire
Certain 2022 Sorento vehicles may have been equipped with an incorrect spare tire from the factory. When installed, the wrong-size spare can impair the anti-lock braking system (ABS) and traction control system (TCS), creating a dangerous driving situation.
Kia issued a recall to replace the incorrect spare tire with the correct specification. Dealers will verify and replace the spare tire free of charge.
Est. Cost: Covered under recallSpontaneous Windshield Cracking
A notable number of Sorento owners report windshields cracking spontaneously without any visible impact point. Cracks typically start from the edge of the glass and spread across the windshield. This is the most frequently reported visibility complaint for the 2022 Sorento.
Have the windshield inspected by the dealer to verify there is no impact point. Document the crack with photos and request goodwill coverage from Kia as a manufacturing defect. Some owners have had success getting the replacement covered under warranty.
Est. Cost: $400 - $1,200 for windshield replacement4 NHTSA safety recalls for the 2021 Kia Sorento. Check your VIN at NHTSA.gov
ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
Kia America, Inc. (Kia) is recalling certain 2021-2023 Sorento vehicles. The heating, ventilation, and air conditioning (HVAC) blower motor wiring harness may be inadequate, which can result in a fire.
A fire increases the risk of injury.
Dealers will replace the wiring harness and blower motor resistor, free of charge. Owner notification letters were mailed January 23, 2026. Owners may contact Kia customer service at 800-333-4542. Kia's number for this recall is SC351. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning October 9, 2025.
POWER TRAIN:AUTOMATIC TRANSMISSION
Kia Motors, Inc. (Kia) is recalling certain 2021-2022 Sorento and 2021-2023 K5 vehicles. The vehicle's "fail-safe" limited-mobility drive mode may be impaired, when prompted by a transmission oil pump malfunction, which can result in a complete loss of drive power.
Loss of drive power increases the risk of a crash.
Dealers will inspect and replace the transmission, as necessary. Dealers will also update the transmission control unit software. All repairs will be performed free of charge. Owner notification letters were mailed December 9, 2022. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC250.
TRAILER HITCHES
Park OutsideKia America, Inc. (Kia) is recalling certain 2016-2022 Sorento, 2021-2022 Sorento Hybrid (HEV), 2022-2023 Sorento Plug-In Hybrid (PHEV), and 2017-2022 Sportage vehicles equipped with a tow hitch harness installed as original equipment, or purchased as an accessory through a Kia dealership. Debris and moisture accumulation on the tow hitch harness module printed circuit board (PCB) may cause an electrical short, which can result in a fire.
A fire while parked or driving can increase the risk of injury.
Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will inspect the vehicle, and, as necessary, replace the fuse and/or tow hitch harness module, free of charge. Owner notification letters were mailed August 11, 2023. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC249.
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Kia Motor America (Kia) is recalling certain 2021 Sorento and 2021-2022 K5 vehicles equipped with 2.5L turbocharged engines. Fuel may leak at the pipe connection between the high-pressure fuel pump and fuel rail.
A fuel leak increases the risk of a fire.
Dealers will inspect and tighten, or replace the fuel pipe as necessary, free of charge. Owner notification letters were mailed July 21, 2021. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC214.