BEDFORD, N.H., Nov. 21, 2016 /PRNewswire/ -- U.S. consumers effectively overpaid for auto insurance coverage by a stunning $101 billion in the last five years, a new study by insurance analytics company ValChoice has found. As reported by the NY Times, roughly 90 percent of consumers could have gotten a better deal had they used a policyholder-owned insurer that pays dividends to members. However, the difficulty of comparing insurers on factors other than price prevents consumers from seeing how much value they get for their dollar. Click here for the full report and an infographic. How an insurer was organized affected how much of its customers' premium payments it pocketed, ValChoice found. From 2011-2015, mutual companies that paid dividends (companies owned by policyholders) kept the smallest percentage of their customers' premium payments, thereby providing the best value to the consumer. Publicly traded insurers kept the largest percentage, thereby providing the worst value. Privately held insurers fell in the middle. Compared to mutual companies that pay dividends, privately held companies kept an additional $43 billion in premium payments, and publicly traded insurers kept an additional $58 billion. For households, the difference between using a publicly traded company vs. a policyholder-owned company that paid dividends equaled nearly four months' worth of car insurance payments. On average, households that bought their auto insurance from publicly traded companies received $262 less in value per year, for a total of $1,316 over the last five years, than did households that bought their insurance from policyholder-owned firms. (The average monthly car insurance payment in the U.S. is $70 according to the most recent Insurance Information Institute data.) "When we did our analysis, it was clear that shareholder pressure is having a material impact on the quality of the insurance protection consumers are buying," said Dan Karr, Founder and CEO of ValChoice. "Public companies are under increased pressure to deliver profits to shareholders. With a growing number of publicly traded insurance companies, this is negatively impacting consumers. Consumers deserve to know the value and quality — not just the price — of the insurance they buy. We hope this report helps them make better decisions when choosing an auto insurer." For consumers, getting less value from their auto insurer is a growing problem, the ValChoice study found. Twenty-eight percent of the $101 billion consumers lost to companies that were not dividend-paying mutual companies came in 2015. The ValChoice analysis examined the percentage of net earned premiums per year that companies paid out in loss compensation. This is known as the Paid Loss Ratio (PLR). Paying a claim would count as a paid loss, for instance. The ValChoice study found that privately held and publicly traded insurers had significantly lower PLRs than did insurers owned by their policyholders.