Career
In January 2005, he was named prefect of Suceava County. In April 2008, he was dismissed from his job of prefect and named subprefect of the same county. In August 2008, he resigned and decided to run in the 2008 election on a Privatdozent -L ticket, winning a Senate seat in a Suceava County district.
He was nominated in 2009 to be part of the second Emil Boc Cabinet, but soon after, he gave up to this office after the press began talking about the car accident in which he was involved.
Onofrei explained his decision by saying he doesn"t want to put the President or the Prime-Minister in a difficult situation. In June 2002, while driving above the legal speed limit through Cleja village, Bacău County, he hit and killed an 8-year old child, Paul Hădărag.
In 2006, he was sentenced to a suspended prison term of one year. He appealed and the sentence was overturned in 2007.