A fail is not the end of the test. It opens a short window in which the car comes back for a re-inspection of the failed items only. Miss the window and you start again with a full test and a full fee.
The three results
- Pass with minor faults: you get the certificate, but the faults are listed and should be fixed.
- Major: the car has failed. You have 30 days to repair and return it. No certificate until it passes the re-inspection.
- Dangerous: the car has failed and must not be driven. A "failed dangerous" sticker goes on the car. Driving it risks penalty points and a court appearance. It has to be brought back, usually on a trailer or by a garage, and pass before a certificate issues.
The two deadlines
Book the re-test within 21 days of the original test and have it done within 30 days. Both count from the day of the failed test, not the day you got the repairs done. If either passes, NCTS treats the car as untested: a full test, €60, and a place in the normal queue.
What a re-test costs
- €40 if the failed item needs the test lane: brakes, emissions, suspension, headlamp aim, steering, anything measured on equipment.
- Free if it is a visual check with no lane: wipers, a bulb, a number plate, a mirror, a seatbelt buckle. Call ahead and go in; no appointment is needed, but confirm the centre is open because break and shift times vary.
- Moving or cancelling a booked re-test inside five working days costs €16.
The re-test calendar is a different calendar
When a car with an open fail signs in on ncts.ie, the booking page shows re-test slots only, with the deadline printed at the top. Those slots are short-dated and separate from the periodic test calendar other cars see. NCTS says lead time for re-tests is usually under three days. If your centre shows nothing inside your deadline, try the next centre over; the re-test can be done at any centre, not only where the car failed.
nctalerts.ie handles re-test cars differently for the same reason: alerts are read with your own registration, against your own calendar, and stop at your deadline. Cars without a fail are watched through a shared pool so the calendar we read is the one you would see.
Before you go back
- Bring the Vehicle Inspection Report. The inspector re-checks the items listed on it.
- Fix everything on the list, including minors, so a second fail does not start another cycle.
- If the fail was headlamp aim (the most common failure item, about 5% of all tests in 2024), have a garage set the aim with the car loaded as it was on test day.
Frequently asked
Do I have to re-test at the same centre?
No. Any centre can do the re-test. Bring the Vehicle Inspection Report so the inspector knows what to check.
What if I miss the 30 days?
The re-test lapses. You book a new full test at €60 and go into the normal calendar. The clock cannot be extended by NCTS.
Can I drive the car after a major fail?
Legally you can drive it to and from repair and to the re-test, but you have no valid certificate if the old one has expired, which is an offence. A dangerous result means the car must not be driven at all.
Is a visual re-test really free?
Yes, where no test lane equipment is needed. NCTS lists wipers and registration plates as examples. Ring the centre for a good time to come in; opening hours vary and there are short closures at shift changes.