2020 Hyundai Elantra · Engine & cooling
Engine may stall or the vehicle may lose power
The piston oil rings may not have been properly heat-treated, which could result in engine damage.
What the reviewed source says
Start with the documented condition, not a parts guess.
NHTSA campaign 21V301000 includes certain 2019 to 2020 Hyundai Elantra vehicles. 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 not have been properly heat-treated, which could result in engine damage. A damaged engine may stall, increasing the risk of a crash.
Words owners may use
Does this match the moment?
Symptoms in the pattern
- The engine may stall, fail to restart or lose propulsion, sometimes without advance warning
- An open campaign appears when the complete VIN is checked
- Some recalled vehicles may show no advance warning before the component fails
Vehicles and scope
- 2019 to 2020 Hyundai Elantra
- NHTSA campaign 21V301000
- The manufacturer filing lists 158,493 potentially affected units across the complete campaign.
- VIN eligibility determines whether this recall applies to an individual vehicle
Manufacturer position
What the official procedure directs
Dealers will inspect and, if necessary, replace the engine, free of charge. In addition, Hyundai will deploy Piston Ring Noise Sensing System (PNSS) software. Owner notification letters were mailed August 24, 2021.
Safety recall eligibility is based on the VIN and campaign scope, not ordinary warranty mileage. Check the complete VIN even when the vehicle is outside its original warranty.
Original evidence
Open the documents behind this page.
Repair paths and safe checks
Separate the diagnosis from the action.
Use the official recall remedy
Dealers will inspect and, if necessary, replace the engine, free of charge. In addition, Hyundai will deploy Piston Ring Noise Sensing System (PNSS) software. Owner notification letters were mailed August 24, 2021.
Do not buy parts from the campaign description alone. VIN scope, superseded remedies and parts availability can change.
What owners reported
Did this repair fix the same symptom on your car?
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Check the complete VIN before arranging work
Enter the 17-character VIN in NHTSA's recall lookup and ask the manufacturer or an authorised dealer to confirm whether the campaign is open for this vehicle.
A year, make and model match does not prove that every vehicle is included. The VIN result controls eligibility.
What owners reported
Did this repair fix the same symptom on your car?
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Useful before authorizing work
Read the method beside the problem
These guides explain the safety and evidence checks that apply to this problem file.
Check recalls by VIN
A VIN search checks the displayed NHTSA records for an unrepaired safety recall associated with one vehicle. A model search shows only the wider campaign population.
Read guide ↗When a car is unsafe
A warning light does not always mean the same thing, but weak brakes or smoke leave little room for experimentation. Damaged tires and certain recall instructions can do the same.
Read guide ↗Why symptoms overlap
“It makes a weird noise” is useful human language. Diagnosis begins when that language is tied to the exact vehicle and its operating conditions.
Read guide ↗More for this model
Other reviewed Hyundai Elantra conditions
2022 to 2023 Hyundai Elantra · Safety restraints
Air bag system safety defect
The emblem on the cover of the driver's front air bag may not have been welded properly, which can result in the emblem detaching upon deployment.
2015 to 2016 Hyundai Elantra · Body & structure
Door may open or fail to latch
The trunk latch may become damaged, preventing the opening of the trunk from the inside.
2021 Hyundai Elantra · Visibility, cameras & lighting
Elantra rearview camera image may fail to display
NHTSA campaign 24V879000 lists the 2021 Hyundai Elantra for a condition in which elantra rearview camera image may fail to display.