Michael, 43, said in Brent Magistrates Court that he was guilty due to "tiredness and prescribed drugs."
The pop star, whose birth name is George Panayiotou, was arrested on Oct. 2 in London.
A charge of being in charge of a vehicle while unfit through drugs was dropped by the Crown Prosecution Service. Sentencing was to be passed at a later date.
Michael was arrested in the early hours of Oct. 2 after police responded to complaints that a car was blocking an intersection in North London. Police said he was found slumped over the wheel of the car.
Malaysia needs Russia's assistance in maintaining and repairing Su-30MKM fighter jets
Japanese Prime Minister Shinzo Abe said that US army bases will not appear on the southern Kuril Islands in the even Russia delivers them to Japan
Posters for the play "Adam and Eve. Life after Paradise" with pictures of dancers Arsen Aghamalyan and Oksana Vasilyeva were banned in the city of Tver, Central Russia