The contact owns a 2020 Hyundai Veloster. The contact stated that while driving 40 MPH, there was an abnormal knocking sound coming from the engine compartment. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the piston oil rings, resulting in damages to the engine. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 21V301000 (Engine). The VIN was included in the recall, but the vehicle was already repaired under the recall. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 90,000.