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2021 Hyundai Kona problems: engine and transmission complaints and recalls

VERY HIGH COMPLAINT SIGNAL
76%
88 of 117 relevant owner complaints are about the engine, transmission or fuel system

76% of relevant owner complaints filed with NHTSA on the 2021 Hyundai Kona 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 95% of the 1,789 model years we track (2010–2023).

NHTSA data checked October 3, 2026
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Does the 2021 Hyundai Kona have engine problems?

Owner complaints say yes, heavily, as a model-year pattern. 88 of 117 relevant complaints filed with NHTSA about the 2021 Hyundai Kona concern the engine, transmission or fuel system (76%), and the largest group is filed under engine (78). For comparison, the 2020 scores 77% and the 2022 scores 48%. 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
88
engine, transmission, fuel
Total complaints
117
this model year
Fires reported
3
owner-reported
Recall campaigns
1
2 crashes · 3 injuries

Complaints by component

ENGINE78 · 67%
UNKNOWN OR OTHER18 · 15%
POWER TRAIN14 · 12%
ELECTRICAL SYSTEM11 · 9%
FUEL/PROPULSION SYSTEM4 · 3%
FORWARD COLLISION AVOIDANCE4 · 3%

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
64%
45 of 75
2019
83%
155 of 193
2020
77%
122 of 160
2021
76%
88 of 117
2022
48%
49 of 107
2023
32%
21 of 69

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

Cleaner alternatives

Same car, a better year

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

ENGINE09/30/2026
My 2021 Kona Limited 1.6L Turbo is consuming oil so rapidly that the Low Oil Pressure light has activated on the highway, creating a sudden risk of stalling and engine failure, that the dealership and Hyundai are declining service. According to research, when your oil pressure light flashes, your engine is moments awa…
ENGINE09/11/2026
"The vehicle suffered sudden internal engine failure while in operation due to catastrophic oil starvation, presenting a severe risk of engine stalling and loss of propulsion on the road. Active diagnostic codes are P0014, P0017, and P0303. An independent mechanic confirmed the engine was found 3 quarts low on oil with…
ENGINE08/21/2026
At approximately 100,500 miles, the 2.0L Nu engine experienced a sudden, catastrophic internal failure while operating, causing a loss of power and stalling. Failed Component & Availability: The engine block assembly failed internally due to severe low compression (95 psi) across multiple cylinders and intake valve le…

Three of 88 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 Hyundai Kona (1)

ENGINE
Hyundai Motor America (Hyundai) is recalling certain 2019-2020 Elantra, 2019-2021 Kona and Veloster vehicles equipped with 2.0L Nu MPI engines. The piston oil rings may …

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

Before you buy a 2021 Hyundai Kona

Questions people ask about the 2021 Hyundai Kona

Does the 2021 Hyundai Kona have engine problems?

Owner complaints say yes, heavily, as a model-year pattern. 88 of 117 relevant complaints filed with NHTSA about the 2021 Hyundai Kona concern the engine, transmission or fuel system (76%). 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 Hyundai Kona?

NHTSA lists 1 recall campaign on the 2021 Hyundai Kona. Whether a specific car still has one open depends on its VIN.

Which Hyundai Kona years are better?

Among the Hyundai Kona years we track, the 2023 (32%), the 2022 (48%) and the 2018 (64%) have a lower engine and transmission complaint share than the 2021 (76%). Manufacturers fix things mid-generation, so the year before or after can be a different car.

Should I buy a 2021 Hyundai Kona?

That depends on the car in front of you, not just the model year. The 2021 Hyundai Kona 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.