This is one of the most searched questions by candidates who start with practising theory for driving licence B — and rightly so. Because if you know the rules of the game, you can approach your preparation much more effectively.

In this article, you’ll find out exactly how many mistakes you may make on the theory test for driving licence B, how the scoring works, which mistakes cost the most points, and how to pass with a safe margin instead of just falling short at the limit.

How many mistakes may you make? The answer at a glance

How does scoring work on the theory test for driving licence B?

The basic rule is simple: each question counts for one point. But there are nuances that many candidates do not know.

Not all mistakes carry the same weight

In the driving theory test in Belgium, a mistake on a question about dangerous driving behaviour or a critical traffic situation can weigh extra in the assessment. If you make a mistake here, it costs you 5 points. Concretely, this means that you should not only pay attention to how many mistakes you make, but also which mistakes they are.

Why is the limit of 9 mistakes so strict?

The limit of 9 mistakes out of 50 questions means a pass rate of 82%. That has been deliberately set high: the Belgian government wants to be sure that people who drive really know the traffic rules — not just a little bit.

In practice, on the first attempt, an average of 55 to 65% of candidates pass. Many of those who fail score 39 or 40 out of 50 — they know the basics, but lack the necessary certainty and the insight needed for the more difficult situation questions.

Which mistakes cost the most points?

Candidates consistently lose points on the same types of questions. If you know where the pitfalls are, you can practise theory for driving licence B more effectively.

•        Misjudging right of way: Priority rules are complex in Belgium, especially at junctions without signs. Many candidates underestimate the "priority from the right" rule in combination with other situations.

•        Misinterpreting traffic signs: Signs in the background of an image are often overlooked. Yet they are sometimes the key to the correct answer.

•        Answering too quickly: Anyone who does not read the full question sometimes misses a small detail that completely changes the answer.

•        Analysing situations incorrectly: Insight questions require you to apply several rules at once. Anyone who only knows the rules individually will get stuck here.

•        Lane rules and overtaking: The rules around overtaking, lanes and motorway driving are often not practised enough.

What does this mean concretely for your preparation?

If you know how many mistakes you may make, you can adjust your preparation. The golden rule: aim for at least 45 out of 50 when practising, not 41.

Why? Three reasons:

•        Stress on the real exam lowers your concentration and increases the risk of careless mistakes

•        Doubt leads to extra mistakes — anyone who gets 45/50 during practice has a buffer

•        Small details are easier to overlook when you are under pressure

Practical step-by-step plan to stay under 9 mistakes

Use this step-by-step plan as a guide for your preparation:

1.     Start with understanding, not memorising — understand why a rule exists

2.     Practise by topic so you get targeted feedback per theme

3.     Analyse every mistake — once you understand a mistake, you won’t make it again

4.     Focus on repeating your weak points, not everything again

5.     Do exam simulations under time pressure to train the real exam feel

6.     Aim for 45/50 as your personal standard, not 41/50

Frequently asked questions (FAQ)

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