I co signed on a bank loan to finance the purchase of a car for my brother in Florida. Only his name is on title, registration and insurance policy. Would I be liable and can I be sued by another person if he were in an accident?
You can be sued if some random stranger that you never had any interaction with gets in an accident. There is really no barrier to people suing you if they get it in their head that they want to. Winning that lawsuit is another matter entirely.
Whether you would be held liable and lose the lawsuit depends on whether someone can convince a court that you are partially responsible for a financial loss. Not sure how anyone could possibly successfully argue that in this situation.
I am sure that laws differ from state to state. My brother and I had to take over my dads finances due to his health. He had a vehicle that had a loan on it. We refinanced the vehicle and it was in our name. One of our family members needed a vehicle and offered to take over the payment. Our attorney advised us to be on the insurance policy with them and make sure if was paid correctly. We are in Indiana. I know it is hard to discuss finances with family members. However, if you co-signed the loan I think it would be wise to either have your name added to the insurance policy or at least have your brother show proof it has been paid. If you are not comfortable with that it may be a good idea to make sure the bank has your correct address and ask if they would notify you if insurance has lapsed. If your on the loan and there is no insurance at the very least if the vehicle was damaged you would still be responsible to pay the loan.
It might be possible to sue you successfully if someone brought evidence that your brother was absolutely totally unsuitable to drive a car because of some character flaw, and without your financial help he wouldn't have been able to afford a car. So helping a brother to buy a car, if that brother is a drinking alcoholic, or has only a faked driver's license and you know it, that could get you into trouble.
A not unsimilar situation: A rental car company could probably be sued successfully if they rented a car to someone who they knew (or maybe should have known) was disqualified from driving and that person caused an accident.