The contact owns a 2019 Honda Civic Si. The contact stated that there was a burning chemical odor inside the cabin of the vehicle. The odor went away but has since returned. The contact stated that while depressing the clutch, the vehicle was vibrating, and the engine revved up, but the clutch felt as if it was slipping. The failure was most persistent between 1st and 2nd gear. The contact found a Technical Service Bulletin related to NHTSA ID Number: 10219641 (Power Train); however, the vehicle was not covered under the TSB. The dealer was contacted and informed the contact that the vehicle was not covered under warranty. The vehicle had not been diagnosed or repaired by the dealer. The vehicle was taken to a certified mechanic who determined that the clutch failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure; however, the contact had not spoken with the persons advised to speak with for assistance yet. The failure mileage was 26,900.