Call at least three agents to ask for pricing.
Ask for proposals in writing.
Make sure you plan on sufficient liability coverage to protect your assets.
Consider whether you need secondary coverage, like emergency road service and rental reimbursement.
Tell the agent if your car is mortgaged or leased.
Make certain the agent inspects your car and verifies the odometer reading and vehicle identification number.
Know the value of your car.
Consider dropping collision and comprehensive coverage if your car has lost most of its value.
Choose the highest possible deductibles, if such coverage is necessary.
Ask about discounts for age, good driving history or insuring multiple vehicles with the same company.