2021 Kia Sportage: engine and transmission complaints
VERY HIGH COMPLAINT SIGNAL
60%
29 of 48 relevant owner complaints are about the engine, transmission or fuel system
60% of relevant owner complaints filed with NHTSA on the 2021 Kia Sportage are about the engine, transmission or fuel system. Well over half of everything owners reported is the drivetrain. That is a severe model-level pattern; every model year we track at this level has a documented failure behind it.
Worse than 80% of the 1,230 model years we track (2010–2023).
Excludes 2 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 58%).
The percentage is each model year's drivetrain complaint share. No elevated signal describes the model year, not any one car; a well-kept example of a flagged model can still be the right buy, and any of these still needs an inspection.
What owners reported
ENGINE AND ENGINE COOLING,ELECTRICAL SYSTEM10/02/2025FIRE2 INJURED
The contact owns a 2021 Kia Sportage. The contact stated that her mother was driving at an undisclosed speed on the freeway and had stopped on the shoulder of the road to access the navigation system. The contact stated that after the driver shifted to park(P), the driver noticed smoke. The contact's grand-mother who w…
ENGINE AND ENGINE COOLING,VEHICLE SPEED CONTROL08/20/2026
See attached document for complaint.
ENGINE08/11/2026
The hose connected on the antifreeze leak into the engine compartment
Three of 29 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.
Recall campaigns on this model year (2)
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
Kia Motors America (Kia) is recalling certain 2017-2021 Sportage and Cadenza vehicles. The electrical circuit in the Hydraulic Electronic Control Unit (HECU) may short-c…
TRAILER HITCHES
Kia 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 e…
This does not say whether a particular car has an open, unrepaired recall. That depends on the VIN.
Before you buy a 2021 Kia Sportage
Ask the seller whether the engine has ever been repaired or replaced, and whether the car has shown stalling, loss of power, rough idle, oil consumption or a check-engine light.
Drive it from a cold start and long enough to warm up. Many engine faults hide once the car is warm.
Get an independent pre-purchase inspection from a mechanic you choose, and tell them to focus on the engine.
2 recall campaigns on this model year. Whether a specific car still has one open depends on the VIN; the report checks that.
Ask for service records. A engine already replaced under warranty is a different car from one that was not.
Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.
Experimental model-level information. This is not a vehicle inspection, vehicle-history
report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition
of any individual vehicle.