What happens if a car accident was not your fault but you were driving a friend's car that was insured by liability insurance?

I believe if, before the accident, you are listed as a driver on the insurance policy, then you are allowed to drive the vehicle too. If so, then the car at fault is at fault. If you are not listed as a driver, then your friend could be at fault if he gave you permission to drive the car. If he did not give you permission to drive the car, then you could be held liable. Liability covers only the other car, unless you have uninsured motorist insurance included, then your car is also covered if the at fault driver has no insurance, if you are listed as a driver. If the car at fault has no insurance what-so-ever, then they could be at fault because they should not even be on the road if your state requires minimal liability insurance. You can call any insurance company to find out, and remain anonymous if you would like, and if they will tell you. Or you can call a lawyer who gives free consults to find out. I would suggest that you first look up your state laws (regarding automotive insurance requirements for your state, if it has any). Then go from there. State laws may vary!