5,255 NCT tests were carried out in Donegal for the month of June.
51% of vehicles tested in Donegal failed their NCT last month.
In total, 2,299 vehicles were graded a major fail, while 385 were marked as dangerous.
A further 2,571 vehicles passed their test.
The majority of inspections took place in Letterkenny, where 2,340 vehicles were tested, with a pass rate of 47%.
In Donegal Town, 1,426 vehicles were tested, with a 50% pass rate, while Carndonagh saw 835 tests, also recording a 50% pass rate.
Derrybeg recorded 654 tests, and had the highest pass rate in the county at 54%.
