The mom-of-three appeared on Tuesday in a Michigan courthouse where she was sentenced to a fine and probation following her suicide attempt in October 2015.
Mathers, who is in treatment for substance abuse, was issued a $900 fine, a year's probation with random alcohol and drug testing up to four times per month, the Detroit News reported.
She avoided a trial with her guilty plea.
Last year, Mathers, who was the subject of Eminem's jilted anthems "Kim" and "Stan" crashed her Cadillac Escalade into a pole on purpose after drinking "a fifth" of Malibu Rum and prescription pills, police records show.
She told the judge, she was "really, truly, deeply sorry" for her actions that day, and that her behavior "didn't take into consideration anyone else's safety."
The Grammy winner and Mathers, who divorced in 2001, have three daughters together.