CheapInsurance.com reports auto insurance rates rising nationwide, with average monthly costs varying by state for liability and full coverage.

The cost of insuring a car varies widely from state to state, and the most expensive states rank where they do for an interesting variety of reasons.

We found Progressive, Nationwide, Travelers and Geico to be the top auto insurers in the state ...

CarInsurance.com's analysis highlights the sharp divide between the most and least expensive U.S. cities for car insurance.