Lubars, the former president and executive creative director for Fallon North America, takes over from Ted Sann, 59, who leaves after 34 years with BBDO Worldwide.
The appointment was the first to be overseen by the incoming president and chief executive, Andrew Robertson, just ten days after he replaced Alan Rosenshine.
Robertson said: "David has won every major award in advertising, has proven himself as a bold motivator and leader, and I am really looking forward to working with him."
Lubars, who was a member of the creative team behind the highly acclaimed series of BMW viral ads starring the British actor Clive Owen, among others, is the second senior management figure to leave the Publicis Groupe-owned agency in recent months. Mark Goldstein, the former chief marketing officer, announced his departure for Lowe last month.
BBDO's hiring of Lubars is being interpreted as representing a shift at BBDO towards non-traditional forms of advertising, fuelled by Lubars' BMW virals fame.
The three films in the second campaign, which featured a host of celebrities, were awarded the first-ever titanium Lion at Cannes last year and have since become a fixed attraction at New York's Museum of Modern Art.
Lubars was made the president and executive creative director at Fallon in 2002, in a management realignment. The reshuffle came in the wake of the merger between Bcom3 and Fallon's parent company, Publicis Groupe.