NCT Common Fails

Looking up NCT common fails before your test — or after a fail sheet? This guide from N80 Auto Centre in Crannagh, near Stradbally explains typical problem areas in plain English and how we prepare or repair within our workshop remit.

Common NCT fail & advisory areas

Testers work to the official NCT manual. In practice, many drivers see issues in these areas. This is educational only — not a complete list of every possible fail item.

1. Lights & visibility — headlights, indicators, brake lights, number-plate lamps, and related defects. We check and repair lighting we can address in the workshop as part of NCT preparation.
2. Brakes — pad/disc wear, imbalance, efficiency or handbrake issues flagged on the report. See brake repairs.
3. Suspension & steering — worn bushes, joints, springs, dampers or steering play that affect safety or ride. See suspension & steering.
4. Emissions-related items — exhaust leaks or other emissions issues we can address mechanically. Scope confirmed when we see the car and any scanner results. Link also to diagnostics when a warning light is on.
5. General safety & mechanical defects — items that fall under listed work such as exhaust, battery/electrical, or findings during a service or pre-test check.

Tyre condition and depth are also common NCT items. N80 Auto Centre does not supply or fit tyres — use a tyre specialist for that work.

How N80 prepares and repairs

1. Book a pre-test check or bring your fail/advisory report.
2. We inspect the car against common fail areas we can work on.
3. We explain findings and agree repairs before work starts.
4. You book the official NCT separately at an authorised centre.

Full booking detail sits on our NCT preparation page. For a numbered pre-test checklist, see the same page.

Map a fail item to a service page

• Brakes → /brakes
• Suspension / steering → /suspension-steering
• Warning lights / unclear faults → /diagnostics
• Service alongside prep → /servicing
• Book NCT prep → /nct-preparation

Frequently asked questions

What usually causes NCT fails?

Common fail and advisory areas include lights, brakes, suspension and steering, tyres (we do not supply or fit tyres — ask a tyre specialist), emissions-related items, and other safety defects the tester flags. Exact causes depend on the vehicle and the official report.

Can N80 Auto Centre guarantee I will pass?

No. No garage can honestly guarantee a pass. We prepare and repair; the official NCT centre decides the result.

What if I already have a fail sheet?

Bring the fail or advisory report. We assess which items we can repair within our listed mechanical work — brakes, suspension, lights, exhaust and related jobs — and agree a plan before work starts.

Do you carry out the official NCT test?

No. We provide preparation and repairs only. Book the official test separately at an authorised NCT centre.

Where should I go for each type of repair?

Brakes → /brakes. Suspension and steering → /suspension-steering. Warning lights or unclear faults → /diagnostics. Routine service alongside prep → /servicing. General NCT prep booking → /nct-preparation.

Related