All Mitsubishi Fuso trucks are now under the microscope

Officials are unhappy with the pace of a recall of 65,000 Fuso vehicles over a defect with the clutch housing.

"Users driving a potentially faulty Mitsubishi vehicle could be ordered to have it inspected," said an official.

Mitsubishi Fuso is struggling to restore its tarnished brand image, after a number of repeated recalls.

The company, spun off from Mitsubishi Motors in January 2003 and 65%-owned by US German giant DaimlerChrysler, was this year revealed to have been hiding dangerous defects from the authorities for the past eight years.

The clutch defect alone has caused at least 18 accidents since 1992, including one fatal case.

Mitsubishi Fuso is now recalling more than 500,000 vehicles in total, to address a number of potential defects.