The way I see it, figure out what it would cost you to replace your car. subtract a deductible. For me it is $500 for collision. Then look at the cost of the policy. Compare 3 years worth of collision and comprehensive insurance to the replacement value minus your deductible. Then you can decide if it worth it or not. If you can live with the difference in an accident then save the money and when the time comes put it toward a new vehicle. If not go full coverage. Of course the full coverage only pays if you cause the accident, or hit and run. So be careful out there.