It has emerged that two-thirds of large commercial tractors have failed a new NCT style test.
The test ensures the safety of "fast tractors" and other large road-going machinery used by agricultural contractors.
11% of the tested tractors were designated as 'dangerous', according to a report in the Irish Farmers Journal.
So far, only 70 fast tractors have been presented for the new test.
Paul Mooney from the Irish Farmers Journal says there was a wide range of faults.
"Two-thirds of them have failed and about 11% of these have failed dangerous," said Mr Mooney.
"A share of them would have failed on something significant in terms of safety...maybe a bit of wire in the steering."
Mr Mooney added that "a number of them would have failed on more minor items" such as the number plate being slightly uneven.