You know your credit score affects mortgage rates and credit card approvals. But car insurance? In most states, insurers use your credit to calculate premiums—and it matters more than you think. More ...

Drivers with poor credit usually pay for more car insurance. That's because, in the majority of states, car insurance companies can use your credit history when determining your monthly premiums.

Drivers with a perfect driving record can pay twice as much for car insurance if they have bad credit. Improving a credit score from "very poor" to "exceptional" can yield car insurance savings of 273 ...