When you purchase auto insurance policy, you have to determine your deductible. It is the amount of money you agree to pay for future damages in the event you break your or someone else’s car. An insurance company will pay the rest of the cost up to the coverage limit. Deductible is also used in non-collision related damages to the car.

If you low your deductible on your auto insurance policy, you will raise your premium. Ask your insurer for a quote for a high ($500/1000$) and a low (100$/250$) deductible and then estimate your costs. Remember, if the accident happens during the first year, your total costs may be higher with a high deductible.
In any case, doesn’t raise your deductible so high that, should you have an accident, you can't cover your part of the cost.

Consider your chances of sustaining damage to your car and then take a final decision. The better chances you have, the lower deductible should be. Besides it's usually more profitable to get a low deductible for comprehensive coverage than collision coverage.