does charge a $170 fee for each insured vehicle
, most insurance companies offer a discount for insuring multiple vehicles under the same policy. In addition to that discount, you may also qualify for discounts that he would not get on his own. There is no guaranty that he would pay less by being added to your policy, but it is a definite possibility. Quoting changes to your policy should not cost anything so it is probably worth contacting your insurance provider to see how much he and his vehicle would impact your rate if they were added.