Over half of cars failed the NCT test across the north west during November.
The statistics were made available on the official NCT website.
In total, just over 6.200 tests were carried out in Sligo, Carrick on Shannon, Donegal Town and Letterkenny centres throughout the month.
Donegal Town was found to have the highest pass rate, with 573 passes, which is 44.11% in total.
That was followed by Letterkenny, with a pass rate of 43.69%, 43.21% of a pass rate in Carrick-on-Shannon and in Sligo the pass rate was 41.97%.
Across the four centres, there was a total of 3,569 failures. 3,043 of those were major failures, with the remaining 526 listed as dangerous failures.
Sligo saw the highest number of dangerous failures, with 165, followed by Letterkenny with 151.
While Carrick-on-Shannon and Donegal Town had 116 and 94 respectively.
In total, the pass rate for the region was 43.17%, the major failure rate came in at 48.46%, with the dangerous failure rate accounting for 8.83% of the overall total.