James Brown, 24, of Sterling Heights is charged with killing the women in two incidents in last December, WDIV-TV in Detroit reported.
Macomb County prosecutors charge he killed Denesha Hunt and Renesha Landers after they went to his house Dec. 18. Their bodies were found the next day in the trunk of a car in Detroit.
Natasha Curtis and Vernithea McCrary went to Brown's house Dec. 24, officials charge. The women's bodies were found Christmas Day in the trunk of a burned-out car in Detroit. They had been burned beyond immediate recognition.
Investigators said Brown connected to the women through backpage.com, an Internet site similar to craigslist.com.
Brown faces four counts of first degree murder, four counts of disinterment and mutilation of a dead body, and two counts of arson.
If convicted on the murder charges, he could face life in prison.