Olbia police commander Giovanni Mannoni told the outlet that Clooney did not suffer any serious injuries and he will be monitored by hospital staff as an outpatient for the next 20 days.
The 57-year-old was travelling to the set of his new TV show Catch 22 in Costa Corallina when a auto turned and struck him.
HuffPost UK has contacted George's representatives for comment.
The Batman and Robin star is staying in Sardinia for the summer with his wife, Amal, and their one year old twins, Ella and Alexander, while he films for TV series, Catch 22. More information is to follow.
The couple had previously been enjoying their European trip alongside George's parents Nina and Nick Clooney, as well as Amal's mother Baria Alamuddin.More news: Trump Narrows Supreme Court Search to Three Front-Runners
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The accident took place near the beach resort of Costa Corallina, local Tgr Rai Sardegna channel wrote on Twitter.
The stunning abode features two swimming pools, a tennis court and an incredibly colourful landscape.
Based on Joseph Heller's classic novel, it will be broadcast in the United Kingdom on Channel 4.
In April, the legendary thespian announced he was cutting down his acting role in the Hulu production so he could focus on directing.
His castmates include Hugh Laurie, Austin Stowell ('Whiplash') and Kyle Martin Chandler ('Friday Night Lights').