Accidentally backing a car into a garage door is actually a fairly common occurrence. The general condition of your door is actually what determines whether you can replace only the damaged panels or need to replace the entire door. Find out more at the link below:
Shared by our friends at Dixie Door, Inc. (TN) on FB:
"We receive many phone calls regarding homeowners backing their car into their garage door. Depending on many factors, the door may be repairable or the entire door would have to be replaced. Check this article out."