The film has received praise overseas. On Rotten Tomatoes, the film holds a rare 100% "Fresh" critics' rating. Derek Elley of Variety wrote that "3 Idiots takes a while to lay out its game plan but pays off emotionally in its second half."
In college, Farhan and Raju form a great bond with Rancho due to his refreshing outlook. Years later, a bet gives them a chance to look for their long-lost friend whose existence seems rather elusive.