What is the ruling of Sharia regarding a Muslim's sponsorship of his friend who evaded paying off a car loan owed to the bank, knowing that his other friend is a partner in smuggling the company and possessing the money, and the guarantor is asked to pay the amount, which he does not own?

If you do not have the money to pay the bail, you are in hardship. You should advise your friend to pay the debt and warn him that you will escalate the matter to the authorities. If he does not respond, you may escalate the matter to the authorities. It is not permissible to use deceit to unlawfully consume people's wealth.