A vehicle used by government offices or public institutions for official duties; an official (government) vehicle.
市長は公用車で視察に出かけた。
The mayor went on an inspection trip in an official car.
公用車を私的に使うのは問題になることがある。
Using an official vehicle for private purposes can become a problem.
この部署では公用車の燃費管理を徹底している。
This department strictly manages the fuel consumption of its official vehicles.