Less than half of the cars being tested at the NCT centre in Ennis last year passed on the first attempt.
Meanwhile, the waiting period for all three driving test centres in Clare is on the rise.
Latest CSO figures show that of the 32,704 vehicles brought in for an NCT in Ennis last year, 14,829 passed first time
Over 15,000 managed to pass on the re-test – while just over 2,000 cars tested in 2016 failed to pass at all.
Meanwhile, when it comes to driving tests, learner drivers in this county are left waiting up to four months for an appointment.
The centre in Ennis is experiencing the most congestion, with the average wait last year 16 weeks.
Those testing at Kilrush were waiting 13 weeks, it was 11 in Shannon while those in South East Clare who opt to do theirs in Limerick could also expect a 13 week wait.
