Kildare recorded the second lowest level of 'fail dangerous' cars
The number of dangerously defective cars on Irish roads has reached an all-time high, with over 128,000 vehicles deemed “fail dangerous” during their National Car Test (NCT) in 2024.
According to figures from the National Car Testing Service (NCTS), 128,548 cars were found to be unroadworthy to a dangerous extent during testing last year.
This represents 7.42% of all vehicles examined, the highest proportion recorded in recent years.
The percentage of cars categorized as "fail dangerous" has steadily increased, rising from 4.9% in 2020.
Common causes for a "fail dangerous" result include severely corroded bodywork, bald or damaged tires, brake fluid leaks, malfunctioning car doors, and faulty brake lights.
At a county level, Cavan recorded the highest rate of dangerously defective vehicles, with 11.9% of cars tested failing the NCT, followed by Leitrim (10.3%), Clare (9.7%), and Monaghan (9.4%).
The lowest rates were seen in Offaly (6.1%), Kildare (6.3%), Louth and Waterford (both 6.7%), Dublin and Wicklow (both 6.8%), and Kilkenny (7.0%).

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