Comprehensive coverage is meant to pretty much cover everything else not covered by collision, liability or uninsured/underinsured coverage: vandalism, theft, and other damages (hail, for example). Repairs can be made to your car by access to your comprehensive coverage. Damages not associated with accidents can still be rather expensive, and so it is to your advantage to include comprehensive coverage on your car insurance policy.
Both of these types of insurance have set levels of coverage that you can choose. It is important to evaluate your needs, and decide what level is appropriate for you. The norm is between $50,000 and $250,000, depending on how much the car is worth. The more money the insurance company is expected to pay, the higher your premium will be. Additionally, you will have to decide on a deductible. This is the amount of money you pay out of pocket for the damages before the insurance kicks in. Most insurance companies allow you to have a deductible as low as $200 or as high as $1,000. The higher your deductible, the lower your premium. The most popular deductible amount is right around $500.
When you are deciding on a car insurance policy, it is a good idea to consider collision and comprehensive coverage. That way you will have some protection in nearly every instance of damage to your vehicle.