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Auto Problems

2021 Hyundai Kona Reliability & Problems

By Adrian V. LockhartUpdated All 118 NHTSA owner reports researched and classified

Red 2021 Hyundai Kona, front three-quarter view
Pictured: 2021 Hyundai Kona 1.6 (Brunei model). Photo: AIMHO'S REBELLION 8490s, CC BY-SA 4.0, placed on a blurred background

Owner complaints

118

6 report a crash, fire, injury or death

Recalls

1

None urgent

Most common problem

36%

of complaints: stalling while driving

Complaints per year filed

2021–2025 · peak 23

In short

Serious known problems

The 2021 Hyundai Kona has serious known problems: 42 owner complaints (36%) describe engine failure or stalling, a safety-critical failure. NHTSA has 118 owner complaints, and 6 report a crash, fire, injury or death. The most common problems are stalling while driving, engine failure and excessive oil consumption. There is 1 recall.

Reliability

How Reliable Is the 2021 Hyundai Kona?

This model year has serious known problems because of what owners report about the engine. More than a third of its complaints describe engine failure or stalling, including misfires and head gasket failures, and these are safety-critical because an engine that cuts out while moving can leave a driver without power at speed. The page verdict also reflects that a large share of complaints report a crash, fire, injury or death, or a loss of power while moving. Most of the rest of the complaints are not about comfort or small annoyances. They are about the engine.

Three problems recur: stalling or shutting off while driving, engine failure, and excessive oil consumption. They overlap a lot. Owners who describe stalling also describe knocking, a check engine light, a check oil light, oil running out underneath, and engines that would not restart. Several owners of cars with engine failure say the dealer diagnosed that the engine needed to be replaced, and some report waiting for parts. For a buyer, this means these are probably not three separate risks. They look like one engine problem that shows up in different ways, and an oil level warning may not come first, since some owners say there was no warning light before the engine failed.

One recall covers this model year: 21V301000. It says the piston oil rings may not have been properly heat-treated, which could result in engine damage, and that dealers will inspect and, if necessary, replace the engine free of charge. Owners in all three problem groups mention this recall, so it clearly relates to what they describe. Stalling and oil consumption do not have a recall of their own for this model year. Where owners describe repairs, complaints lean toward repairs that failed to solve the problem, so a completed recall is not proof that the engine is trouble-free.

Mileage matters, but it does not clear a car. Stalling is reported at a median of about 36,600 miles, with a quarter of reports at 17,900 miles or less and a quarter at 85,300 miles or more. Oil consumption has a median of about 52,800 miles, and engine failure has a median of about 81,000 miles, although a quarter of engine failure reports are at 20,600 miles or less. Across all mileage reports for this model year, the median is about 23,700 miles. So a low odometer reading does not rule out these problems, and a high one means the engine has had more time to show them.

If you are considering one, treat the engine as the main thing to check. Get proof the recall was done, ask for oil service records, and have a mechanic check the oil level and look for leaks before you buy. Keep in mind the limits of the evidence. Complaint counts show what owners chose to report, not how many vehicles are affected, and they cannot show how any particular car was maintained or driven. A car with no history of these symptoms may be fine, but the pattern here is serious enough that you should ask for proof before you buy.

Top problems

The 3 problems owners report most

Named from 118 NHTSA complaints. Open a problem for symptoms, the fix, cost and owners' accounts.

  1. 1Stalling or shutting off while drivingCriticalAbout 1 in 3 complaints17,900–85,300 mi

    Owners describe the engine stalling, knocking, losing power or not restarting, often on the highway or at speeds such as 20 mph and 60 mph. Reports have a median of about 36,600 miles, and the middle half fall between about 17,900 and 85,300 miles. Owners mention recall 21V301000 in 7 of these complaints.

    What owners describe

    • Engine stalls while driving62%
    • Knocking or shaking24%
    • Check engine or oil light14%
    • Engine will not restart12%

    Fix

    Most common repair owners describe: engine replacement needed (4 reports). Recall 21V301000.

    Mileage

    36,600 mi

    Middle half 17,900–85,300 mi · 24 reports

    Repair cost

    —

    Fewer than 10 owners report a repair cost

    How common

    36%

    42 of 118 complaints

    By engine

    • 2.0L 4-cyl92%
    • 1.6L 4-cyl8%

    In owners' words

    “After loud explosion sound, the engine stalled 3 times recently while driving and today. No brake, hard steering wheel, and almost bumped the car front of me.”
    Owner in IL2.0L 4-cylFiled 2021NHTSA 11421351
    “The surge felt like the ABS system triggered a single pulse, and then car completely turned off: no engine power, no radio power, no cabin lightning power”
    Owner in WA2.0L 4-cylFiled 2022NHTSA 11498864
    “It used to just stop in the middle of traffic and just not drive I would have to completely turn the car off and back on in the middle of the highway.”
    Owner in NC2.0L 4-cylFiled 2025NHTSA 11647670
  2. 2Engine failureCriticalAbout 1 in 4 complaints20,600–88,500 mi

    Owners report a check engine light, knocking, an engine that would not restart, a seized engine, and failed piston rings, with some on highway drives at 60 mph. Reports have a median of about 81,000 miles, but a quarter come at 20,600 miles or less. Owners mention recall 21V301000 in 6 of these complaints.

    What owners describe

    • Engine seizes or won't restart25%
    • Knocking or very loud engine21%
    • Check engine light18%
    • Oil leaking underneath11%

    Fix

    Most common repair owners describe: engine replacement needed (4 reports). Recall 21V301000.

    Mileage

    81,000 mi

    Middle half 20,600–88,500 mi · 16 reports

    Repair cost

    —

    Fewer than 10 owners report a repair cost

    How common

    24%

    28 of 118 complaints

    By engine

    • 2.0L 4-cyl96%
    • 1.6L 4-cyl4%

    In owners' words

    “Was driving when the car seemed to lose power and would not accelerate and started shaking. Check engine light came on and got it read, the code indicated a misfire and other errors.”
    Owner in GAFiled 2026NHTSA 11720602
    “Excessive oil consumption, over 3 quarts in just 4 months, caused the engine's timing chain to fail due to low oil levels, ultimately leading to a rod punching through the engine.”
    Owner in PA2.0L 4-cylFiled 2025NHTSA 11676914
    “There was almost no oil in the car with less than 5,000 miles on it. Brought the car to the dealership and they determined the engine was defective and would need to be replaced.”
    Owner in NYFiled 2021NHTSA 11413166
  3. 3Excessive oil consumptionCriticalAbout 1 in 5 complaints20,000–87,600 mi

    Owners describe knocking on cold starts, a check engine light, stalling, and very little or no oil in the engine, sometimes with no warning lights. Reports have a median of about 52,800 miles, and the middle half fall between about 20,000 and 87,600 miles. Owners mention recall 21V301000 in 5 of these complaints.

    What owners describe

    • Little or no oil in engine23%
    • Knocking on start19%
    • Check engine light12%
    • No warning before trouble8%

    Fix

    Most common repair owners describe: engine replacement needed (1 report). Recall 21V301000.

    Mileage

    52,800 mi

    Middle half 20,000–87,600 mi · 14 reports

    Repair cost

    —

    Fewer than 10 owners report a repair cost

    How common

    22%

    26 of 118 complaints

    By engine

    • 2.0L 4-cyl96%
    • 1.6L 4-cyl4%

    In owners' words

    “I would burn around 1 quart every 1000 miles. Dealer solution is to put in 5W 30 full synthetic oil. Got a little better but within a few months, back to burning1 quart every 1000 miles.”
    Owner in IL2.0L 4-cylFiled 2025NHTSA 11691130
    “This is the 4th time the car has totally lost oil, with no indications that is was even close or anything wrong until it was empty the warning came and check to find zero oil.”
    Owner in OH1.6L 4-cylFiled 2026NHTSA 11768190
    “When the car is cold and first started the engine knocks and it has gone through 2 quarts of oil so far. The dealership says nothing is wrong with it.”
    Owner in KS2.0L 4-cylFiled 2022NHTSA 11445833

Buying one

Should you buy a used 2021 Hyundai Kona?

What to check before you buy, based on the complaint and recall data.

Ask the seller whether recall 21V301000 was done and get proof from a Hyundai dealer. Ask for service records that show regular oil level checks, and check the oil yourself before a test drive. Walk away from any car that stalls, knocks, or shows a check engine or check oil light.

  1. 1Run the VIN for open recalls. NHTSA lists 1 recall. Check at nhtsa.gov/recalls.
  2. 2Test-drive for stalling while driving. It's the most common safety-critical complaint, in about 1 in 3 owner complaints, usually around 36,600 miles.
  3. 3Get a pre-purchase inspection. An independent mechanic can spot leaks, stored fault codes and accident repairs that a test drive misses.

Hyundai Kona model years

Which Hyundai Kona years to avoid? Every model year compared

Early complaints are those filed in a model year's first 3 years. They follow how many were sold, so they don't show which years are better. Each tag is that year's verdict from our research of its owner complaints.

  1. 201816 early complaintsAvoid
  2. 201945 early complaintsAvoid
  3. 202086 early complaintsAvoid
  4. 2021This year53 early complaintsAvoid
  5. 202263 early complaintsNo pattern
  6. 202353 early complaintsCheck recall
  7. 202452 early complaintsNo pattern
  8. 202528 early complaintsToo few
  9. 20269 early complaintsToo few

Crash test ratings

NHTSA 5-Star Safety Ratings.

NHTSA crash test ratings
SUV FWDSUV AWD
Overall★★★★★★★★★★
Frontal crash★★★★★★★★★★
Side crash★★★★★★★★★★
Rollover★★★★★★★★★★
Rollover risk14%14%

Owning one

If you already own one

Find your symptom, see when problems tend to show up, and check which recalls apply.

Watch for stalling, engine knocking, a check engine light, a check oil light, or oil spots under the car. If the engine stalls while driving or loses power, pull over safely and do not keep driving. Confirm with a dealer that recall 21V301000 has been completed on your vehicle, and keep every repair record in case the problem returns.

4 of 4
  • Stalling or shutting off while drivingCritical
    About 1 in 3 owner complaints42 of 118Median 36,600 mi

    Most common repair owners describe: engine replacement needed (4 reports).

  • Engine failureCritical
    About 1 in 4 owner complaints28 of 118Median 81,000 mi

    Most common repair owners describe: engine replacement needed (4 reports).

  • Excessive oil consumptionCritical
    About 1 in 5 owner complaints26 of 118Median 52,800 mi

    Most common repair owners describe: engine replacement needed (1 report).

  • Engine knockingCritical
    About 1 in 11 owner complaints11 of 118Median 23,700 mi

1 recall, newest first

Open one for the risk, the remedy and what to do now.

  • EngineThe piston oil rings may not have been properly heat-treated, which could result in engine damage.Apr 28, 2021158,493 vehicles21V301000
    Defect
    The piston oil rings may not have been properly heat-treated, which could result in engine damage.
    Risk
    A damaged engine may stall, increasing the risk of a crash. In addition, oil may leak onto hot exhaust components, increasing the risk of a fire.
    Remedy
    Dealers will inspect and, if necessary, replace the engine, free of charge.

What to do

Check the VIN at nhtsa.gov/recalls. If a recall is open, any dealer will fix it free. For NHTSA's full record of a campaign, search its number there (for example 21V301000).

Every Hyundai Kona recall, across all model years

Reliability history

Hyundai Kona reliability by year

Complaints filed in each model year's first 3 years, by trouble spot. Darker cells have more complaints; counts aren't adjusted for how many were sold each year.

Trouble spot201820192020202120222023202420252026
Transmission & drivetrain2018 Transmission & drivetrain: 1 complaints in the first 3 years.2019 Transmission & drivetrain: 6 complaints in the first 3 years.2020 Transmission & drivetrain: 4 complaints in the first 3 years.2021 Transmission & drivetrain: 6 complaints in the first 3 years.2022 Transmission & drivetrain: 13 complaints in the first 3 years.2023 Transmission & drivetrain: 9 complaints in the first 3 years.2024 Transmission & drivetrain: too new, fewer than 3 complete years.2025 Transmission & drivetrain: too new, fewer than 3 complete years.2026 Transmission & drivetrain: too new, fewer than 3 complete years.
Engine2018 Engine: 1 complaints in the first 3 years.2019 Engine: 29 complaints in the first 3 years.2020 Engine: 62 complaints in the first 3 years.2021 Engine: 32 complaints in the first 3 years.2022 Engine: 20 complaints in the first 3 years.2023 Engine: 6 complaints in the first 3 years.2024 Engine: too new, fewer than 3 complete years.2025 Engine: too new, fewer than 3 complete years.2026 Engine: too new, fewer than 3 complete years.
Fuel system & stalling2018 Fuel system & stalling: 0 complaints in the first 3 years.2019 Fuel system & stalling: 5 complaints in the first 3 years.2020 Fuel system & stalling: 0 complaints in the first 3 years.2021 Fuel system & stalling: 0 complaints in the first 3 years.2022 Fuel system & stalling: 2 complaints in the first 3 years.2023 Fuel system & stalling: 4 complaints in the first 3 years.2024 Fuel system & stalling: too new, fewer than 3 complete years.2025 Fuel system & stalling: too new, fewer than 3 complete years.2026 Fuel system & stalling: too new, fewer than 3 complete years.
Electrical2018 Electrical: 2 complaints in the first 3 years.2019 Electrical: 3 complaints in the first 3 years.2020 Electrical: 6 complaints in the first 3 years.2021 Electrical: 6 complaints in the first 3 years.2022 Electrical: 7 complaints in the first 3 years.2023 Electrical: 21 complaints in the first 3 years.2024 Electrical: too new, fewer than 3 complete years.2025 Electrical: too new, fewer than 3 complete years.2026 Electrical: too new, fewer than 3 complete years.
Driver aids & stability2018 Driver aids & stability: 2 complaints in the first 3 years.2019 Driver aids & stability: 2 complaints in the first 3 years.2020 Driver aids & stability: 4 complaints in the first 3 years.2021 Driver aids & stability: 3 complaints in the first 3 years.2022 Driver aids & stability: 16 complaints in the first 3 years.2023 Driver aids & stability: 11 complaints in the first 3 years.2024 Driver aids & stability: too new, fewer than 3 complete years.2025 Driver aids & stability: too new, fewer than 3 complete years.2026 Driver aids & stability: too new, fewer than 3 complete years.
Brakes2018 Brakes: 0 complaints in the first 3 years.2019 Brakes: 2 complaints in the first 3 years.2020 Brakes: 1 complaints in the first 3 years.2021 Brakes: 1 complaints in the first 3 years.2022 Brakes: 7 complaints in the first 3 years.2023 Brakes: 3 complaints in the first 3 years.2024 Brakes: too new, fewer than 3 complete years.2025 Brakes: too new, fewer than 3 complete years.2026 Brakes: too new, fewer than 3 complete years.
Steering2018 Steering: 1 complaints in the first 3 years.2019 Steering: 1 complaints in the first 3 years.2020 Steering: 4 complaints in the first 3 years.2021 Steering: 2 complaints in the first 3 years.2022 Steering: 0 complaints in the first 3 years.2023 Steering: 1 complaints in the first 3 years.2024 Steering: too new, fewer than 3 complete years.2025 Steering: too new, fewer than 3 complete years.2026 Steering: too new, fewer than 3 complete years.
Suspension2018 Suspension: 1 complaints in the first 3 years.2019 Suspension: 0 complaints in the first 3 years.2020 Suspension: 1 complaints in the first 3 years.2021 Suspension: 0 complaints in the first 3 years.2022 Suspension: 0 complaints in the first 3 years.2023 Suspension: 0 complaints in the first 3 years.2024 Suspension: too new, fewer than 3 complete years.2025 Suspension: too new, fewer than 3 complete years.2026 Suspension: too new, fewer than 3 complete years.
Airbags & seat belts2018 Airbags & seat belts: 1 complaints in the first 3 years.2019 Airbags & seat belts: 2 complaints in the first 3 years.2020 Airbags & seat belts: 2 complaints in the first 3 years.2021 Airbags & seat belts: 0 complaints in the first 3 years.2022 Airbags & seat belts: 2 complaints in the first 3 years.2023 Airbags & seat belts: 2 complaints in the first 3 years.2024 Airbags & seat belts: too new, fewer than 3 complete years.2025 Airbags & seat belts: too new, fewer than 3 complete years.2026 Airbags & seat belts: too new, fewer than 3 complete years.
Body, lights & visibility2018 Body, lights & visibility: 7 complaints in the first 3 years.2019 Body, lights & visibility: 1 complaints in the first 3 years.2020 Body, lights & visibility: 4 complaints in the first 3 years.2021 Body, lights & visibility: 1 complaints in the first 3 years.2022 Body, lights & visibility: 4 complaints in the first 3 years.2023 Body, lights & visibility: 2 complaints in the first 3 years.2024 Body, lights & visibility: too new, fewer than 3 complete years.2025 Body, lights & visibility: too new, fewer than 3 complete years.2026 Body, lights & visibility: too new, fewer than 3 complete years.
Acceleration & speed control2018 Acceleration & speed control: 0 complaints in the first 3 years.2019 Acceleration & speed control: 1 complaints in the first 3 years.2020 Acceleration & speed control: 3 complaints in the first 3 years.2021 Acceleration & speed control: 3 complaints in the first 3 years.2022 Acceleration & speed control: 7 complaints in the first 3 years.2023 Acceleration & speed control: 7 complaints in the first 3 years.2024 Acceleration & speed control: too new, fewer than 3 complete years.2025 Acceleration & speed control: too new, fewer than 3 complete years.2026 Acceleration & speed control: too new, fewer than 3 complete years.
Wheels & tires2018 Wheels & tires: 0 complaints in the first 3 years.2019 Wheels & tires: 0 complaints in the first 3 years.2020 Wheels & tires: 2 complaints in the first 3 years.2021 Wheels & tires: 2 complaints in the first 3 years.2022 Wheels & tires: 1 complaints in the first 3 years.2023 Wheels & tires: 2 complaints in the first 3 years.2024 Wheels & tires: too new, fewer than 3 complete years.2025 Wheels & tires: too new, fewer than 3 complete years.2026 Wheels & tires: too new, fewer than 3 complete years.
Hover or tap a cell for details

All problems

Every problem reported on the 2021 Kona

Every problem found in the 118 owner complaints, by area of the vehicle.

Engine

65 55%
Show 4 more engine problemsShow fewer engine problems
  • Engine keeps running after being turned off
    1 0.8%
  • Engine overheating from coolant leak
    1 0.8%
  • Engine vibration
    1 0.8%
  • Misfires or head gasket failureSerious
    1 0.8%

Transmission & drivetrain

13 11%
  • Harsh, jerky shiftingSerious
    5 4%
  • Transmission failure needing replacementSerious
    3 3%
  • Transmission warning messagesMinor
    2 2%
  • Transmission overheats
    1 0.8%
  • Power transfer unit (PTU) or 4WD failureCritical
    1 0.8%
  • Stuck in a gear, will not upshift
    1 0.8%
Show 4 more transmission & drivetrain problemsShow fewer transmission & drivetrain problems
  • Hesitation or slipping while drivingSerious
    1 0.8%
  • Drops into neutral or loses drive while movingCritical
    1 0.8%
  • Transmission shudder or judderSerious
    1 0.8%
  • Delayed engagement pulling away from a stopSerious
    1 0.8%

Acceleration & speed control

8 7%
  • Hesitation on accelerationSerious
    6 5%
  • Sudden or unintended accelerationCritical
    2 2%

Driver aids & stability

7 6%
  • Blind spot warning false alertsMinor
    4 3%
  • Automatic emergency braking activates for no reasonCritical
    1 0.8%
  • Rear camera blurry or black
    1 0.8%
  • False forward collision warning
    1 0.8%

Body, lights & visibility

7 6%
  • Horn stops working
    3 3%
  • Moisture or condensation inside headlights
    2 2%
  • Paint chipping
    1 0.8%
  • Washer fluid leak into floorboard
    1 0.8%

Steering

5 4%
  • Loss of power steeringCritical
    3 3%
  • Car pulls to one side
    1 0.8%
  • Steering column noise
    1 0.8%

Electrical

4 3%
  • Battery drain or no-startSerious
    3 3%
  • Water leaks damaging electronicsSerious
    1 0.8%

Wheels & tires

4 3%
  • Tire sidewall blowout
    1 0.8%
  • Tire pressure light comes on with tires inflated
    1 0.8%
  • Oil drain plug missing after oil change
    1 0.8%
  • Old tires fitted to a new car
    1 0.8%

Other

3 3%
  • Roof antenna falls off
    2 2%
  • Vehicle rolls away while in park
    1 0.8%

Fire

2 2%
  • Vehicle catches fireCritical
    2 2%

Airbags & seat belts

1 0.8%
  • Seat belt did not lock in crash
    1 0.8%

Brakes

1 0.8%
  • Brake pedal sinks or brakes failCritical
    1 0.8%
  • Brake fluid leak from brake lines
    1 0.8%

Suspension

1 0.8%
  • Clunks or knocks from the suspensionMinor
    1 0.8%

46 problems found in all 118 complaints. One complaint can describe more than one problem, so counts add up to more than the total. Not counted as a defect: 10 about recall paperwork or parts delays. Typical miles, repair cost and fix rate show only when enough owners report them.

The data

Behind the numbers

Every figure comes from NHTSA's complaint file and APIs.

Complaints
118
Recalls
1
Crashes
2
Fires
3
Injuries
3
Deaths
0

Crashes and fires count complaints that report one; injuries and deaths count people.

Mileage at failure

Not enough data yet

Only 29 complaints list mileage; we chart this from 30.

Complaints by year filedPeak: 27 in 2026. * 2026 is a partial year.
’21’22’23’24’25’26*231812172127
’21’22’23’24’25’26*231812172127

Complaints by engine

Decoded from the partial VINs owners include. Not adjusted for how many of each engine were sold.

  1. 2.0L 4-cyl91 82%
  2. 1.6L 4-cyl20 18%

FAQ

2021 Hyundai Kona questions

Is the 2021 Hyundai Kona reliable?

The 2021 Hyundai Kona has serious known problems. Of its 118 NHTSA owner complaints, 42 (36%) describe engine failure or stalling, including stalling while driving, misfires and head gasket failures. Another 41% of complaints report a crash, fire, injury or death, or a loss of power while moving.

What are the most common 2021 Hyundai Kona problems?

The three most common problems are stalling while driving (42 complaints, about 1 in 3), engine failure (28 complaints, about 1 in 4) and excessive oil consumption (26 complaints, about 1 in 5). They overlap, and the engine accounts for 65 of the 118 complaints (55%). Owners also report harsh shifting and hesitation on acceleration, but far less often.

Are there recalls on the 2021 Hyundai Kona?

There is 1 recall, with no do-not-drive or park-outside warning. Recall 21V301000 covers piston oil rings that may not have been properly heat-treated, which could result in engine damage, stalling and a risk of a crash or fire. Dealers will inspect and, if necessary, replace the engine free of charge. Check your VIN at nhtsa.gov/recalls.

Does the 2021 Hyundai Kona stall while driving?

Yes, stalling while driving is the most common complaint, with 42 owner complaints, and it is rated critical. Owners describe the engine stalling, knocking, losing power or not restarting, often on the highway, and some report no warning light first. If the engine stalls or loses power while moving, pull over safely and do not keep driving.

At what mileage do 2021 Hyundai Kona engine problems appear?

Stalling is reported at a median of about 36,600 miles, oil consumption at about 52,800 miles and engine failure at about 81,000 miles. A quarter of engine failure reports come at 20,600 miles or less, so a low odometer reading does not rule these problems out. The median across all mileage reports is about 23,700 miles.

What should I check before buying a used 2021 Hyundai Kona?

Treat the engine as the main thing to check. Ask for proof from a Hyundai dealer that recall 21V301000, the piston oil ring and engine damage recall, was done, and ask for service records showing regular oil level checks. Check the oil yourself before a test drive, and walk away from any car that stalls, knocks, or shows a check engine or check oil light.

Is the 2021 Hyundai Kona safe?

NHTSA gives the 2021 Hyundai Kona 5 out of 5 stars overall, 5 out of 5 stars for frontal crash, 5 out of 5 stars for side crash and 4 out of 5 stars for rollover, the same for front-wheel and all-wheel drive. Separately, 6 of the 118 owner complaints report a crash, fire, injury or death.

Which Hyundai Kona years should you avoid?

Avoid the 2018–2021 Hyundai Kona: owner complaints for those years show serious known problems. For the 2023, make sure the recall repairs were done: an urgent recall matters more than its complaint pattern. The 2022 and 2024 show no pattern of serious problems. The 2025–2026 have too few complaints to judge. Every model year is compared on the Hyundai Kona years-to-avoid page.

Methodology

How we researched this