2019–2020 Hyundai Elantra, 2019–2021 Hyundai Kona, 2019–2021 Hyundai Veloster Recall: Piston oil rings may not have been properly heat-treated, which could…
NHTSA campaign 21V301000 · Engine · filed Apr 28, 2021 · verified Jul 30, 2026
The defect
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.
The 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.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
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.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Affected vehicles
Related recalls
More Hyundai Elantra recalls
- 2015–2016 Hyundai Elantra and 1 other model — Driver's air bag inflator may rupture during deployment
- 2026 Hyundai Elantra and 4 other models — B-pillar impact sensors may have been misassembled, which…
- 2021–2022 Hyundai Elantra and 5 other models — Due to a damaged printed circuit board, the rearview camera…
- 2024 Hyundai Elantra and 2 other models — An electrical short circuit may occur in the exhaust gas…
- 2015–2016 Hyundai Elantra — Trunk latch may become damaged, preventing the opening of…
Other campaigns involving Hyundai vehicles
Source: NHTSA recall database, campaign 21V301000 (manufacturer number 203). Data last verified Jul 30, 2026.