Isuzu Motors Ltd. (Japanese: いすゞ自動車株式会社, Hepburn: Isuzu Jidōsha Kabushiki-Kaisha), commonly known as Isuzu (Japanese pronunciation: [isɨᵝzɨᵝ], /iˈsuzu, aɪ-/), is a Japanese multinational automobile manufacturer headquartered in Yokohama, Kanagawa Prefecture. Its principal activity is the production, marketing and sale of Isuzu commercial vehicles and diesel engines.