NCT guide 2026: what to bring, costs, test time and how to prepare

The National Car Test (NCT) is Ireland's mandatory roadworthiness test for vehicles, designed to improve road safety and reduce harmful emissions. Yet, recent RSA data shows that 51% of all vehicles fail their initial NCT*.

In this guide, we'll look at how you can prepare your car to pass first time in 2026, as well as how to check and book your NCT, how much it costs, how long the NCT takes and what to you need to bring.

What's covered:

• Why is the NCT important?

• How much does the NCT cost?

• How long does an NCT take?

• How to check when your NCT is due and book a test

• What to bring to your NCT

• NCT preparation checklist: 11 checks to make before test day

• The 10 most common reasons cars fail the NCT

• NCT FAQs

Why is the NCT important?

Not only is the National Car Test (NCT) a legal requirement under the 1961 Road Traffic Act, but driving without a valid NCT certificate could also lead to fines, penalty points or prosecution. It also helps ensure vehicles are safe to drive, contributing to better road safety and lower vehicle emissions.

How much does the NCT cost?

As of January 2025, the NCT costs €60 for a full test and €40 for a re-test. Re-tests that don't require the use of testing equipment are free of charge, such as a visual inspection to check that faulty windscreen wipers have been replaced.

Note: Cancelling, rescheduling or missing an NCT appointment with fewer than five working days' notice incurs a €24 fee. For standard NCT appointments, the remaining balance will be refunded, while re-test appointments are subject to a reduced €16 fee.

How long does an NCT take?

An NCT takes around 40 minutes to 1 hour to conduct. The test includes approximately 60 checks carried out manually and by computer.

Make sure you allow a full hour for arrival, check-in and collecting your result. The practical time you spend at the centre may be longer than the test duration itself, especially if the centre is busy.

How to check when your NCT is due and book a test

You can check the due date of your NCT on the official NCT website. Simply enter your vehicle's registration number to find out when your current certificate expires.

Your due date depends mainly on the age of the car:

• Cars under four years old do not need an NCT

• Cars aged four to nine years must be tested every two years

• Cars aged ten years and over require an annual test.

You can book or manage your NCT online via the official website, or by calling the NCT booking line at (01) 4135992. All you need is your vehicle registration number and a valid credit or debit card to make payment.

Tip: You can have your car tested up to 90 days before its NCT due date without affecting the expiry date of your next certificate. Booking early leaves time to fix any issues if your vehicle fails the test.

What to bring to your NCT

What documents do I need for NCT?

You'll need to bring the following to your NCT inspection:

• Either a valid driving licence or public services card as a form of ID

• Your vehicle registration book, vehicle registration certificate or licensing certificate

• Current insurance disc (displayed on your windscreen) - shows your vehicle has valid insurance at the time of the test.

• Appointment booking confirmation (email or SMS)

• A payment card if you haven't already paid online / by phone

NCT preparation checklist: 11 checks to make before test day

With the admin out of the way, the next step is making sure your vehicle is test-ready. Here are they key checks to carry out before test day:

1. Tyres and wheels

• Check each tyre for any visible bulges, cuts or excessive wear. They should have a minimum tread depth of 1.6mm

• Remove wheel hubcaps (only if they cover the wheel nuts) and ensure the tyres are inflated to the correct pressure.

2. Lights and visibility

• Have your lights checked and set prior to your test, and replace any broken bulbs. This includes indicators, headlights, brake lights, fog lights and number plate lights.

• Ensure the vehicle is reasonably clean, particularly underneath.

3. Brakes

• Make sure the brakes feel responsive and firm.

• Check that your brake fluid is at the correct level.

4. Seats and seat belts

• Make sure the seats are upright and cleared of personal belongings, including including removable baby seats.

• If a baby seat is left in the vehicle, it will be checked to confirm it is fitted correctly.

• Make sure all seatbelts and clips are fully visible.

5. Windscreen and wipers

• Check the windscreen for any significant cracks or chips

• Windscreen wipers should work properly, and washer fluid should be topped up.

6. Engine and fluids

• Make sure your car has adequate oil and coolant levels.

• Ensure the engine is in a suitable condition for testing (for example, the cam belt/timing belt is in good working order).

• Bring the vehicle to the test centre at normal operating temperature.

7. Interior, boot and glovebox

• Empty the boot and unlock and clear the glovebox of any personal belongings, to allow for OBD testing.

• Make sure any devices using the OBD port in the vehicle are removed ahead of the test

8. Registration plates

Check that your registration plates are clean and comply with current regulations.

9. Dashcams and recording devices

• Switch off any dashcams or recording devices before arriving, as their use is prohibited during testing.

10. Dashboard warning lights

• Check dashboard warning lights before the test, especially anything linked to braking or anti-lock braking systems.

• The NCT uses on-board diagnostics testing to scan items including the vehicle identification number, odometer reading, electronic braking system and anti-lock braking system.

11. Horn

• Make sure your horn is working

You can find the official NCT checklist here.

The 10 most common reasons cars fail the NCT

According to NCT data*, these are the 10 most common reasons that vehicles fail their NCT:

Sources:

• Annual Statistics - NCT

• NCT statistics and annual reviews - RSA

This is a marketing article from Howden Insurance. The information in this guide is accurate at time of publication. This content is provided for general information only and does not constitute financial or insurance advice.