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DUI Involving Serious Bodily Injury If while committing the offense of DUI, the impaired driver causes serious bodily injury to another person, including their own passenger, the offender is guilty of a felony of the third degree, punishable by a fine not to exceed $5,000, and by up to five years in prison.
https://www.tampacriminalattorneys.com/criminal-defense-blog/2018/august/4-ways-a-florida-dui-is-a-felony/