Car insurance costs have climbed faster than almost any other household expense, leaving many drivers searching for relief. Your premium depends partly on factors outside your control—age, location, driving record—but several levers remain in your hands.

Start with your deductible. Raising it from $500 to $1,000 typically cuts your collision and comprehensive coverage costs by 15 to 30 percent. This works only if you can cover that deductible from savings without hardship. Bundle your auto policy with homeowners or renters insurance. Most insurers including State Farm, Allstate, and GEICO offer discounts of 10 to 25 percent when you combine policies. Ask explicitly about this; insurers won't volunteer it.

Shop around annually. Rates shift constantly, and your current insurer has no obligation to offer competitive pricing to existing customers. Get quotes from at least three companies. Comparison sites like The Zebra and NerdWallet speed this up, though calling insurers directly sometimes yields better quotes.

Maintain a clean driving record. A single accident or speeding ticket can hike your rate 20 to 40 percent for three to five years. Defensive driving courses shave 5 to 10 percent off premiums with many carriers. Some insurers offer these classes free online.

Low-mileage discounts apply if you drive under 10,000 or 15,000 miles annually. Carpooling or working from home can qualify you. Usage-based programs like Geico's Snapshot and State Farm's Drive Safe and Save use mobile apps to monitor your driving habits. Safe drivers save 10 to 30 percent through these programs.

Review your coverage limits annually. If you drive a paid-off car worth under $10,000, dropping collision and comprehensive coverage saves money, though you lose protection