🪞 Mirror Checks Explained: When Should You Check Your Mirrors During The Irish Driving Test?
Mirror checks are one of the simplest skills to learn—but they’re also one of the easiest ways to lose marks.
Many learners either:
❌ Forget them completely
❌ Check them too late
❌ Only move their eyes
❌ Check mirrors without understanding why
The examiner isn’t looking for random mirror checks.
They’re looking for good planning and awareness.
Why Mirror Checks Matter
Mirrors tell you what’s happening behind and beside your vehicle.
They help you decide whether it’s safe to:
➡️ Slow down
➡️ Speed up
➡️ Signal
➡️ Change direction
➡️ Change lanes
➡️ Move away
Without good mirror use, your decisions become unpredictable for other road users.
When Should You Check Your Mirrors?
The easiest rule is:
Before you change speed or direction.
That covers almost every situation during the driving test.
You Should Check Your Mirrors Before…
🚗 Moving Off
Interior mirror
Right mirror
Signal (if needed)
Blind spot
Move away.
⛔ Slowing Down
Before braking, check your interior mirror so you know what traffic is behind you.
🚦 Stopping At Traffic Lights
As you slow down, glance in your interior mirror.
This becomes especially important if you’re braking firmly.
↩ Turning Left
Interior mirror
Left mirror
Signal
Position
Turn.
↪ Turning Right
Interior mirror
Right mirror
Signal
Position
Turn.
🚘 Changing Lanes
Interior mirror
Door mirror
Blind spot
Move only when safe.
🚙 Overtaking
Mirrors first.
Then plan the manoeuvre.
Never decide to overtake before checking what’s happening behind you.
Common Mirror Mistakes
❌ Looking With Your Eyes Only
The examiner may not see tiny eye movements.
Use natural head movement.
❌ Checking Too Late
Mirrors should be checked before braking or steering.
❌ Looking But Not Processing
Ask yourself:
“What did I actually see?”
Observation is about gathering information—not simply looking.
❌ Random Mirror Checks
Mirror use should match what’s happening on the road.
Random glances every few seconds don’t impress the examiner.
The Examiner Wants To See…
✅ Smooth planning
✅ Early observation
✅ Calm decisions
✅ Natural driving
Not exaggerated head movements.
Not robotic routines.
Easy Memory Tip
Remember:
Speed
Direction
Whenever either changes…
Check your mirrors first.
It’s one of the easiest habits to develop before your test.
Frequently Asked Questions
Can forgetting mirrors fail the driving test?
Yes, especially if it creates danger or repeatedly shows poor observation.
Do I always need both mirrors?
It depends on the situation.
Use the mirrors that give you the information you need.
Should I check mirrors before signalling?
Yes.
Always know what’s around you before communicating your intentions.
Does the examiner watch my eyes?
No.
They look for natural head movement and safe decisions.
Can checking mirrors too much lose marks?
Not directly.
However, unnecessary mirror checks can distract you from what’s happening ahead.
Related Guides
➡️ Observation Faults Explained
➡️ How To Perform A Proper Blind Spot Check
➡️ Will I Fail For Not Checking Blind Spots?
➡️ Do I Need To Check My Blind Spot Every Time?
➡️ Moving Off Safely