Liability auto insurance protects you from that worst case scenario by providing a cushion between your assets and the amount you’re on the hook for. For this reason, choosing the right auto liability limits is the most important part of your car insurance quote comparison. NerdWallet typically recommends having at least as much liability coverage as your net worth.

Credit score: This can be a main factor for insurers in states that allow it. According to an Insure.com rate analysis, drivers with poor credit pay 71 percent more on average for car insurance than drivers with good credit. “All insurers have come to the conclusion that there is a correlation between credit worthiness and the probability of having a claim,” says Travis Biggert, chief sales officer with HUB International. Keep your credit score in the acceptable range to keep your premium affordable.
Vehicles loaded with safety features that tend to be driven by parents or other fairly responsible drivers make up the majority of our least expensive list. “Safety features such as airbags, lane departure, back-up cameras and automatic restraint systems all factor into insurance rates. If these technologies are found to reduce the risk of an accident, it may result in lower premiums for policyholders whose vehicles are equipped with these safety features.” says Michael Barry, spokesperson for the media and public affairs division of the Insurance Information Institute.

Auto insurance premiums depend on the insured party's driving record. A record free of accidents or serious traffic violations typically results in a lower premium. Drivers with histories of accidents or serious traffic violations may pay higher premiums. Likewise, because mature drivers tend to have fewer accidents than less-experienced drivers, insurers typically charge more for drivers below age 25.

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