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2021 Kia Seltos problems: engine and transmission complaints and recalls

VERY HIGH COMPLAINT SIGNAL
86%
313 of 363 relevant owner complaints are about the engine, transmission or fuel system

86% of relevant owner complaints filed with NHTSA on the 2021 Kia Seltos 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 99% of the 1,789 model years we track (2010–2023).

Excludes 9 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 84%).

NHTSA data checked October 3, 2026
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Does the 2021 Kia Seltos have engine problems?

Owner complaints say yes, heavily, as a model-year pattern. 313 of 363 relevant complaints filed with NHTSA about the 2021 Kia Seltos concern the engine, transmission or fuel system (86%), and the largest group is filed under engine (228). For comparison, the 2022 scores 70%. On a test drive, check for stalling, loss of power, rough idle, oil consumption or a check-engine light. This describes the model year, not any one car: a well-maintained or already-repaired example can be fine, and a clean model year can still have a bad car in it.

Drivetrain complaints
313
engine, transmission, fuel
Total complaints
372
this model year
Fires reported
6
owner-reported
Recall campaigns
2
13 crashes · 8 injuries

Complaints by component

ENGINE228 · 61%
POWER TRAIN68 · 18%
ELECTRICAL SYSTEM48 · 13%
UNKNOWN OR OTHER46 · 12%
ENGINE AND ENGINE COOLING44 · 12%
FUEL/PROPULSION SYSTEM26 · 7%

The years either side

2010
no data
2011
no data
2012
no data
2013
no data
2014
no data
2015
no data
2016
no data
2017
no data
2018
no data
2019
no data
2020
no data
2021
86%
313 of 372
2022
70%
49 of 73
2023
45%
20 of 46

Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.

Cleaner alternatives

Other subcompact SUVs with no elevated signal in 2021

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

ENGINE03/12/20261 INJURED
I made a turn onto a highway. I got up to 45 mph after my turn and my car stalled. It felt like a was reared ended, my car came to just about a complete stop. It then began to shake and would not accelerate past 5mph to get me over to the side of the road. The check engine light came on. On 2/28/2026 my engine came on,…
ELECTRICAL SYSTEM,AIR BAGS,ENGINE03/17/2024CRASH1 INJURED
The car initially had electrical and engine issues since may of 2022. The engine would fail mid drive and the car would turn of in the middle of driving and would lock up until engine would restart on its own. It stayed at the dealership for repairs until march of 2023. After many modifications and alterations and seve…
ENGINE AND ENGINE COOLING,ENGINE09/29/2026
The contact owns a 2021 Kia Seltos. The contact stated that the vehicle was experiencing excessive oil consumption. While driving 55 MPH, the vehicle lost motive power in the middle of the highway and came to a stop. The check engine warning light was illuminated, and an abnormal burning odor was coming from the vehicl…

Three of 313 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.

Recall campaigns on the 2021 Kia Seltos (2)

ENGINE
Kia Motors America (Kia) is recalling certain 2020-2021 Soul, and 2021 Seltos vehicles equipped with 2.0L Nu MPI engines. The piston oil rings may not have been properly…
ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL
Kia America, Inc. (Kia) is recalling certain 2021-2023 Seltos and Soul vehicles. The piston oil rings may have been manufactured incorrectly, which can result in engine …

This does not say whether a particular car has an open, unrepaired recall. That depends on the VIN.

Before you buy a 2021 Kia Seltos

Questions people ask about the 2021 Kia Seltos

Does the 2021 Kia Seltos have engine problems?

Owner complaints say yes, heavily, as a model-year pattern. 313 of 363 relevant complaints filed with NHTSA about the 2021 Kia Seltos concern the engine, transmission or fuel system (86%). Before buying one, have an independent mechanic check the engine and ask the seller whether it has been repaired or replaced.

Are there engine or transmission recalls on the 2021 Kia Seltos?

NHTSA lists 2 recall campaigns on the 2021 Kia Seltos. Whether a specific car still has one open depends on its VIN.

Which Kia Seltos years are better?

Among the Kia Seltos years we track, the 2023 (45%) and the 2022 (70%) have a lower engine and transmission complaint share than the 2021 (86%). Manufacturers fix things mid-generation, so the year before or after can be a different car.

Should I buy a 2021 Kia Seltos?

That depends on the car in front of you, not just the model year. The 2021 Kia Seltos has an elevated engine complaint pattern, so treat it as a car that needs proof: service records showing engine work, a cold-start test drive, and an independent pre-purchase inspection focused on the engine. A well-kept or already-repaired example can be a fine car; an unknown one is a gamble.

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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.