Does personal car insurance cover rental of a 15-passenger van?

It seems the common theme among carriers is the this class of vehicle is NOT covered - only your personal liability will be covered. Obviously you need to check with your carrier, but to date I am aware that Liberty Mutual and State Farm do not cover this class o vehicle's collision. You would need to have the rental agent cover the vehicle and you would be liable for any deductible. The deductibles generally are in the $1,000 range.