The state also doesn't contend with a lot of uninsured drivers.
"We have one of the highest rates of insured drivers, so we have more people sharing the risk," he says.
Only Massachusetts has a higher rate of insured drivers, according to the Insurance Research Council. Fewer than 1 in 20 Maine drivers is uninsured, compared to the national average of 1 in 8.
Insure.com commissioned Quadrant Information Services to calculate auto insurance rates from six large carriers (Allstate, Farmers, GEICO, Nationwide, Progressive and State Farm) in 10 ZIP codes per state. Rates were compiled in January 2015.
We averaged rates in each state for the cheapest-to-insure 2015 model-year versions of America's 20 best-selling vehicles and ranked each state by that average. Rates are for comparative purposes only within the same model year.
Rates are based on full coverage for a single, 40-year-old male who commutes 12 miles to work each day, with policy limits of 100/300/50 ($100,000 for injury liability for one person, $300,000 for all injuries and $50,000 for property damage in an accident) and a $500 deductible on collision and comprehensive coverage. The hypothetical driver has a clean record and good credit. The rate includes uninsured motorist coverage. Actual rates will depend on individual driver factors.