It will generally run you 4-6% of the value of the car depending upon the type of car (i.e., the purchase price for a new car, reducing each year by the depreciation--around 20% a year). Policies and coverage differ, so make sure you know what you are buying, make sure passengers are covered, understand what the deductable is (if any). Usually when you buy a new car the insurance will be included for the first year by the dealer (but again, make sure you know what you are covered for). Can't say that any one company is better than any other.