It was the first edition of the annual beauty show since it was thrust into controversy when then co-owner and US presidential candidate, Donald Trump, made disparaging remarks about immigrants.
Host Steve Harvey incorrectly announced that Miss Colombia had won the 64th edition of the contest, broadcast live on the Fox television network.
The eventual winner, Pia Alonzo Wurtzbach, a Filipino-German actress and model born in Stuttgart and raised in Cagayan de Oro, was initially runner-up.
But them Harvey announced to the audience that he had made a gaffe.
Ariadna Gutierrez Arévalo, 21, of Sincelejo, Colombia, had already been crowned by Miss Universe of 2014, Paulina Vega of Barranquilla, Colombia, who was forced to remove the crown and give it to Miss Philippines.
Olivia Jordan, 27, of Tulsa, Oklahoma, finished third.
Las Vegas authorities said they were trying to determine whether the driver, a woman who was detained, drove onto the sidewalk intentionally or due to impairment.
Among the notable moments of the pageant, Flora Coquerel of France, who was at the Paris stadium the night of the November attacks by militants, reached the final five and Ariana Miyamoto of Japan, whose father is African-American, reached the last 10.
Miyamoto's height of 1.73 m (5.7 ft) and bronze skin are unusual in Japan and her selection to represent Japan created an online firestorm in her native country.
For the first time, viewers had a chance to vote on the winner, rating contestants in the swimwear, evening gown and interview competitions.
Until recently, the pageant was co-owned by Comcast Corp's NBCUniversal and Trump, who is leading national polls in the 2016 Republican presidential nomination race.