In 2006 , Dia and Aamir Khan publicly expressed support for the Narmada Bachao Andolan
In 2006 itself, she and fellow actor Aamir Khan publicly expressed support for the Narmada Bachao Andolan, a group protesting the building of a dam. This aroused the ire of political activists from the Bharatiya Janata Party, who led a protest march against the actress.
Dia Mirza's car was seized in 2006 for alleged evasion of custom duties.
Dia was previously dating Endorsement Manager Bunty Sachdev (also known as Amit Sajdeh). After that, she was linked to actor Kunal Kapoor and then with director Apporva Lakhia, which also broke up two years back.
To brush up on acting before 'Shootout at Lokhandwala', Dia took a one week course of film at New York University.