Honda will use Facebook's custom-audiences tool to find car owners with defective Takata airbags.

The tool, which allows advertisers to reach a specified list of users, will match encrypted email addresses associated with recalled vehicle identification numbers to Facebook users.

Takata Corp.'s airbag inflators have been linked to at least 18 deaths and 180 injuries around the world because they can rupture and shoot metal fragments into vehicles.

Honda Motor Co. vehicles account for 17 of the 18 deaths.

A report issued on Friday by an independent monitor of the Takata recalls said more than 10 million U.S. vehicles and 18.5 million faulty Takata airbag inflators remain unrepaired in the largest ever auto recall.

Automakers have recalled or expect to recall by 2019 about 125 million vehicles worldwide to replace airbag inflators, including more than 60 million in the United States.