They are defined as creating a safety risk. I believe the severity usually comes in the title of each specific recall, such as "urgent", etc. https://www.nhts

They are defined as creating a safety risk. I believe the severity usually comes in the title of each specific recall, such as "urgent", etc. https://www.nhtsa.gov/recalls https://www.nhtsa.gov/recalls Or with the "do not drive" or "park outside" labels. https://www.carfax.com/blog/urgent-recalls https://www.carfax.com/blog/urgent-recalls