Amazon.com's self-driving unit Zoox agreed to recall 258 vehicles due to issues with its automated driving system that could cause unexpected hard braking, after a U.S. investigation, according to a company filing Wednesday.

Zoox, Amazon's autonomous driving unit, has issued a voluntary recall for 258 vehicles due to issues with its autonomous driving system that could cause

Foster City-based robotaxi company Zoox announced a voluntary recall this week of software used in more than 200 vehicles.