Diagsheet

2021 Hyundai Kona · symptom sheet

Engine stalls or loses power while driving

  • 38owner reports
  • 28,000median miles
  • 0involved a crash

Newest report Aug 21, 2026 · checked Sep 9, 2026

91 of the 115 complaints on this car are about the engine. 38 of those describe stalling, which makes it the most reported problem on the 2021 Kona.

Tick what matches of 38 reports

22
6
25
13
2

What got replaced

Owners who name the part that was replaced mention the battery (3 reports).

Recalls and investigations

One recall on the engine covers the 2021 model year. A recall on the same system isn't always the same failure, so read the defect text.

21V-301Apr 28, 2021
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 not have been properly heat-treated, which could result in engine damage.

Risk and remedy
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. In addition, Hyundai will deploy Piston Ring Noise Sensing System (PNSS) software. Owner notification letters were mailed August 24, 2021. Owners may contact Hyundai customer service at 1-855-371-9460.

NHTSA investigations into the engine on the Kona

DP22-005opened Jan 27, 2023
Electrical · model years 2019 to 2022

Pedestrian alert sounds. Closed aug 7, 2023, led to recall 22V-063.

NHTSA summary
NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.
DP22-003opened Sep 12, 2022
Engine · model years 2018 to 2022

Loss of motive power. Closed dec 12, 2023.

NHTSA summary
The National Highway Traffic Safety Administration (NHTSA) received a letter dated July 13, 2022, petitioning the Agency to initiate a safety defect investigation into loss of motive power allegations attributed to oil drain pan assembly failures on certain Hyundai Motor America, Inc. and Kia America, Inc. vehicles spanning Model Years (MY) 2005-2021. The Petitioners cited examples of complaints indicating that the subject vehicles were experiencing rapid loss of engine oil due to oil drain plug back outs, resulting in loss of motive power and/or catastrophic engine damage. Additional complaints were provided which alleged that the oil drain pans lack sufficient structural integrity and are susceptible to cracking. The petition itself can be reviewed at NHTSA.gov under ODI number 11481745. On September 12, 2022, the Office of Defects Investigation (ODI) opened Defect Petition (DP22-003) to evaluate the Petitioners’ request. The Petitioners have provided additional complaints within four supplemental letters dated January 31, 2023, March 21, 2023, May 23, 2023, and August 4, 2023. ODI’s evaluation included the review and analysis of the complaints and supporting information submitted by the Petitioners, as well as additional complaints submitted directly to NHTSA which referenced either the oil drain plug or a crack in the oil pan. After reviewing the available data, ODI has not identified evidence that would support opening a defect investigation into the oil drain pan as

When it happens

The middle half of failures fell between 14,000 and 60,000 miles, from the 22 reports that gave a mileage.

321
722
523
824
525
1026

What owners wrote

“Low speed hesitancy and shuddering. Car has lost power when driving at 55 mph. Car does not want to move at very slow speeds as in a parking garage. It hesitates and starts to roll backwards.”

Filed Jun 30, 2026

“The cars engine vibrates when accelerating and hesitates. It is always dangerous to stall after hitting the gas. This issue causes many near accidents. It began to vibrate at less than 70k. It has 90k now. These engines have had issues and mine is no exception. They should recall this engine as it's dangerous. top of the line and poop.”

Filed Feb 13, 2026

“I have experienced the same issues with a known recall for my year, make and model. I am not sure why my VIN is not showing. Have records from a mechanic that there was a fire hazard. I have experienced stalling on several occasions. Could I have help getting my VIN recognized so Hyundai will help me?”

Filed Aug 21, 2025

“Ongoing issues with the motor consuming oil despite passing a safety recall inspection. Issues with knocking, oil consumption, engine light on. Issues with the dealership fixing the problem. Issues since January of this year. Issues with stalling and motor locking up. Now no oil and not due for oil change, knocking, hesitates, motor light on.”

Filed Jun 16, 2022

Should you keep driving it?

This page can't tell you that. 0 of 38 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.

File your own report with NHTSA. Complaint counts are how a problem gets an investigation.