19/09/2026
I Failed My ADI Part 3 – Can I Use the Same Topic Again?
If you've failed your ADI Part 3 and you're wondering, Can I use the same topic again on my second attempt?” you're actually asking the wrong question.
Yes, you can use the same topic again. But the real question should be Does your pupil actually need it?
And there's another question which is perhaps even more important:
Do you genuinely understand how to teach whatever your pupil needs on the day? Because if your reason for wanting to use the same topic again is, I like teaching that subject,” or I feel comfortable teaching roundabouts,”we need to look at what you're really saying. What that can translate into is:
I'm confident teaching roundabouts, but I don't really know how to teach some of the other subjects.”And that's the problem you need to fix before your next ADI Part 3.
Can You Use the Same Topic Again? Let's get this bit out of the way first. Yes.
If you taught roundabouts on your first Part 3, there is nothing to say that you can't teach roundabouts on your second attempt.
But—and this is a very big but—the pupil sitting next to you needs to have a genuine need to work on them.
You shouldn't be thinking:
“What subject do I want for my Part 3?”
You should be thinking: “What does this pupil need from me today?”
That's a completely different mindset.
Roundabouts Isn't Really a Topic Let's say you want to teach roundabouts again. What exactly are you teaching?
Because “roundabouts” isn't really a lesson topic.
Does your pupil struggle to identify a roundabout early enough from the signs and road markings?
Do they understand the difference between an open and a closed junction?
Is their approach speed wrong?
Do they struggle with lane positioning?
Is it gap judgement?
Do they understand blockers?
Do they understand the danger zone between the three and seven o'clock positions?
Can they maintain their lane while travelling around the roundabout?
Are they checking their mirrors and signalling correctly before leaving?
And what type of roundabout are we talking about?
A normal roundabout?
A mini-roundabout?
A spiral roundabout?
So when somebody tells me, “I'm doing roundabouts for my Part 3,” my next question is: What about them?
What specifically does your pupil need to improve?
That's your lesson. Don't Choose a Topic Because You Like Teaching It This is where some trainees get themselves into trouble.
They'll say: “I like teaching roundabouts.” Why?
Quite often it's because they've practiced them repeatedly. They've got their questions ready. They know the routes. They know what they're going to say.
Everything feels comfortable.
But your ADI Part 3 isn't supposed to be a demonstration of your favourite lesson. It's supposed to demonstrate that you can teach the person sitting next to you. Driving instruction should be client-centred.
If your pupil is already good at roundabouts, why are you teaching them roundabouts?
And imagine you're driving towards your planned roundabout route and your pupil gets the first left turn wrong. Then they struggle with a right turn. Then they have difficulty emerging from a junction.
But you ignore all of that because: “Today we're doing roundabouts.”
What are you actually teaching? The pupil is showing you what they need help with, but you're ignoring it because you've already decided what you want to teach.
That's not client-centred learning. Look at Why You Failed the First Time
Before worrying about whether you can use the same subject again, get your Part 3 marking sheet out. What did the examiner actually identify? Was it lesson planning? Was it risk management?
Was it your teaching and learning strategies? Did you fail to recognise a fault? Did you recognise it but fail to analyse it?
Did you identify the problem but never give the pupil a proper coping strategy? Did you fail to give them another opportunity to practice it? Or did you simply fail to adapt the lesson?
Because you may have failed while teaching roundabouts, but that doesn't necessarily mean **roundabouts were the problem**.
Your teaching may have been the problem. And that's what we need to identify.
Did You Adapt the Level of Support?
Let's say your pupil genuinely does need help with roundabouts.
At the beginning, perhaps they need you to fully guide them. That's fine.
But then they start improving. Do they still need you talking them through everything? Probably not. So perhaps we move towards prompted instruction. Now they're doing even better.
Maybe it's time to let them have a go independently. That's adapting the lesson.
But it works in the opposite direction as well.
Perhaps you expected the pupil to cope with prompted instruction, but on the day they're nervous. There's an examiner sitting in the back. The traffic is heavier They're making mistakes they don't normally make.
Do you stubbornly continue with prompted instruction because that's what you planned? Or do you recognize what is happening and say:
I think you'd benefit from me giving you a bit more support here. Are you happy for me to fully guide you through the next one?”
That's teaching the pupil you've actually got in front of you.
Find Out Why the Fault Is Happening - Then we come to fault analysis. Seeing a fault isn't enough. Why did it happen?
Was it a problem with **knowledge, understanding, skill or confidence?** That's where we use KUSC.
And then we can work through our FAULT method:
**Find it.**
**Analyse it.**
**Understand it.**
**Learn from it.**
And most importantly:
**Try it again.**
Because there's little value spending five minutes talking about a fault, agreeing how we're going to fix it and then never giving the pupil an opportunity to try the solution.
Don't Script Your Second Attempt - one of the worst conclusions you can come to after failing is: “I know exactly what went wrong, so next time I'm going to plan everything I'm going to do.”
No. Prepare—absolutely. Script—no.
Even with the same pupil, on the same route, doing the same general subject, you cannot recreate the same lesson. The traffic will be different. The weather could be different. The roundabout could be completely open one minute and packed with traffic the next.
You might be sitting in a queue.
Another driver might do something unexpected.
And most importantly, your pupil may have improved.
You have to teach what is happening **today**, not what happened during the lesson you rehearsed last week.
Your Lesson Plan Starts Before Test Day
This is also why your pupil's progress record is so important.
Use it properly.
At the end of each lesson, record what went well, what went wrong and what still needs work.
If you're doing that accurately, you're already starting to build the next lesson plan.
You're not suddenly deciding the night before your Part 3:
“What can I teach tomorrow?”
You should already have a picture of that pupil's development and their current needs.
Here's the Bigger Problem
And this is the part I really want trainees to think about.
If you're desperately trying to engineer your ADI Part 3 so you can teach one particular subject, ask yourself why.
If the answer is:
“Because I'm good at teaching that one.”
Then what about everything else?
If you're confident teaching roundabouts but worried that your pupil might suddenly need help with crossroads, meeting traffic, pedestrian crossings, dual carriageways, junctions or another subject, **that's the weakness you need to work on.**
Don't spend all your training trying to make your favourite lesson even better.
Spend some of that time strengthening the subjects you don't want to teach.
Because when you're a qualified driving instructor, you don't get to choose what faults your pupils make.
So, Can You Use the Same Topic Again?
Yes.
But that's still the wrong question.
Don't ask:
**“Can I use the same topic again?”**
Ask:
**“Does my pupil need this?”**
Then ask yourself:
**“If they don't, am I confident enough to teach what they actually do need?”**
Because the aim isn't to become brilliant at delivering one rehearsed ADI Part 3 lesson.
The aim is to become a driving instructor who can recognise what the pupil needs, understand why they're struggling, adapt the level of support, give them a solution and help them practise it.
And if you're choosing your Part 3 subject simply because **you like teaching it**, that's probably telling you something very important about the subjects you're avoiding.
**They're the ones you need to start working on.**
