Are rental cars insured?
If you have sufficient liability coverage through your own auto insurance, you may not need to buy extra coverage from the rental agency. ... Collision/loss damage waiver (also known as an LDW or CDW) isn't technically insurance. If you damage the rental car, this waiver may help cover the cost of repairing it.
Reference:
Do You Need Rental Car Insurance? | Allstate
Aug 7, 2019