someone test drove my quad that i had for sale and he drove it into the neighbors fence causing damadge to fence and quad who is liable

The driver of the quad would be liable but your homeowner's insurance (if you have it) may cover the damage. This response is general in nature and is not legal advice. No attorney client relationship is formed by it. Further, the response does not represent the opinions or views of LexisNexis or its affiliated companies.