What happens if you let a non insured driver drive?

Uninsured Drivers

If they have an accident, since you gave them permission to drive, Then you as the owner as well as the driver are financially liable for all damages and losses incurred.

The injured parties can sue either or both of you. They can sue you both jointly or separately for the full amount. Hopefully you have good auto insurance though.

Other Answers

You would probably take the blame if it were your car.