Answer by user3040610 for Hide children posts in loop with custom taxonomy

Try this,you have to use include_children as below to remove the children taxonomies.

  $args = array(             //Rest of you args go here'tax_query' => array(                  array('include_children' => false                  )              ),'post_type' => 'cars','car_type' => 'large_cars','posts_per_page' => 100,'order' => 'ASC'          );  $query = new WP_Query( $args );