Buying a car is a natural moment to take a fresh look at your auto insurance. Your needs may have changed, especially if you've swapped an older car for a newer one or paid off a loan.

Collision and comprehensive coverage protect against damage to your own vehicle. Lenders usually require them on financed cars, but on an older car you own outright, it may be worth weighing what the coverage costs against what the car is worth. Raising your deductible can lower your premium, as long as you could cover that amount if you needed to file a claim.

Ask insurers about discounts you may qualify for, such as for bundling policies, safety features, a clean driving record, paying in full or enrolling in a driving-monitoring program. Then compare quotes from several companies with the same coverage limits. Rates can vary widely for the same driver and car, and re-shopping when your situation changes can help keep your costs in check. An agent or insurer can explain which options fit your situation.