This story is coreported with The Markup, a nonprofit, investigative newsroom that challenges technology to serve the public good. Sign up for its newsletters. 


Car insurance costs in Detroit, at an average of $5,300 a year, are too expensive for many in the city to afford, and the question is why. 

Auto theft and break-ins are certainly higher in Detroit than in much of the state, but crime alone does not explain the city’s dubious honor of having higher insurance rates than any other big city in the country

A nearly year-long investigation with The Markup into the high cost of auto insurance in Detroit made clear how heavily insurers rely on location to set rates, and how Black Michiganders are saddled with the most expensive policies. This is despite a 2019 state law that banned companies from using ZIP codes to set rates, in an attempt to fix this disparity. 

Insurers have said that differences in crime between areas is one of the things that justify the variations in their rates. Erin McDonough, executive director of the Insurance Alliance of Michigan, recently told the Detroit Free Press, “Where your car lives is important. Densely populated areas have more thefts and crashes and vandalism, and you also see medical and litigation costs higher.” 

Readers questioned whether car break-ins and thefts explained the big difference in rates between locations, particularly in Detroit. Reporters at The Markup revisited the analysis to find out. 

The original investigation answered the question of whether population density drove rate differences between Black customers and white customers. Insurance rates were generally more expensive in more densely populated areas. But even within those areas, Black customers were asked to pay significantly more based on their addresses. 

For example, white residents outnumbered Black residents by almost 2-to-1 in Auto Club’s most densely populated territories. But almost twice as many Black residents were asked to pay the most expensive rates in those territories. (Auto Club insures AAA members in Michigan.) 

To find out whether the racial disparity in pricing in the most densely populated areas was driven by crime, we compared different coverage plans. 

Stacked bar chart of the number of Michiganders in the top 20% most densely populated territories per insurer. For each insurer, most Black Michigan customers have the highest location effect, compared to less than half of white customers.
Black Michiganders in the most densely populated areas see the highest location effects. Image credit: The Markup

The part of an insurance policy that covers things like theft or break-ins is called comprehensive coverage. Payouts from other coverage categories, including car rental and roadside assistance, may also be triggered by a property crime. Customers can expect these types of coverage to cost more in higher-crime areas. 

But if crime was the factor causing these location-based price differences, and particularly the upcharge in areas with more Black residents, excluding crime-related coverage should have eliminated those disparities. 

Yet, for four of the five insurers we analyzed, removing crime-related coverage had little to no effect on our original findings of how unequal location effects fall along racial lines across the state. 

We analyzed insurance rates across locations for five of Michigan’s biggest insurers: Allstate, Auto Club, Citizens, Liberty Mutual and State Farm. 

Liberty Mutual was the only insurer where removing property crime-related coverage had a meaningful effect. When those coverage types were excluded, more customers, both Black and white, faced higher rates based on where they lived. 

Insurance is a complex industry. State regulators have reminded us it’s important and required by law that insurers price their policies carefully to make sure they have enough money to stay afloat and can pay out claims policyholders depend on. But because the pricing is so complicated, customers are being asked to trust that the insurance industry and regulators are setting fair prices. This is particularly true for Black customers, who are asked to pay more based on where they live. 

In our investigation, we did not have enough information to examine whether lawsuits and medical costs drove up the price of insurance in certain areas. But our analysis shows that although insurers cite crime to defend high rates for Detroiters, they need to do a better job of proving it drives the difference. 

Creative Commons License

Aaron Sankin reports on the intersection of technology and inequality. While at The Markup, he has focused on issues ranging from the digital divide and social media platform governance to law enforcement technology and car insurance regulation.

Mohamed Al Elew is a journalism engineer at The Markup, where they use data and software to produce investigative reporting. Before The Markup, Mohamed was a data reporter at Reveal from the Center for Investigative Reporting, where they investigated disparities...

Sarah (she/her) is the founder and former editor-in-chief of Outlier Media. She believes the best local reporting is a service, responds directly to community needs and reduces harm. Her favorite place in Detroit is her backyard on a summer evening.

Koby (he/him) believes curiosity is food for love, and love drives people to fight for their communities. He enjoys the many moods of the Detroit River. Message him on Signal at koby_det.18.