Why 57% Now Fail: The New 50-Question Rule Explained

What exactly changed in October 2025?

The test got longer and stricter. The knowledge confirmation went from 10 questions to 50, the pass mark rose from 70% to 90% (45 of 50), and the old illustration-style questions were abolished in favour of text statements. The change took effect on 1 October 2025.

The skills (driving) test was tightened too, adding checks like correctly passing a pedestrian crossing and stricter scoring for signal and turning errors.

Why did so many people start failing?

Because the margin for error collapsed. Under the old 10-question test you could get 3 wrong and still pass. Under the new 50-question test you can only get 5 wrong — 90% — across five times as many questions. The same rate of small mistakes that passed before now fails.

The official pass rate reflects this exactly: 42.8% for October–December 2025 versus 92.5% in 2024, according to National Police Agency figures reported on 2 March 2026. The skills test fell from 30.4% to 13.1% over the same window.

Why did Japan make the test harder?

Authorities judged the old test too easy — 10 illustration questions at 70% — at a time when foreign-driver accidents were rising. Accidents involving foreign drivers reached a 10-year high in 2025 (7,906 in total, with 587 causing death or serious injury). There was also concern that short-term visitors were converting licences using temporary addresses.

So alongside the harder test, the rules now require a proper resident record (jūminhyō), and tourist-visa holders can no longer convert a licence.

Are the questions actually different, or just more of them?

The subject matter is the same. The questions still come from the official Rules of the Road and the Road Traffic Act — the same material Japanese learners study. What changed is the volume and threshold, not the syllabus.

That is good news for preparation: there is no secret new content. The winning approach is to drill the 50-question true/false format across every topic — pedestrians, priority, speed, signs, parking — until 90% is routine, not lucky.

How do I pass the 90% bar?

Treat 90% as the floor, not the target. Practise full 50-question sets and aim to consistently score 47–48 or higher, so that a couple of tricky questions on the day still leave you above 45.

Focus on the traps that catch people: statements that swap a duty ("must") for advice ("should"), wrong numbers (distances, speeds, ages), and answers where the statement matches the law but the question asks whether it is false. Every question on this site cites the exact rule it comes from, so you can check why an answer is what it is.

FAQ

What is the pass mark for the conversion knowledge test?

90% — you must get 45 of 50 questions correct. This has been the standard since 1 October 2025.

How many people fail?

About 57%. The pass rate was 42.8% in October–December 2025, so roughly 57% of applicants did not pass, based on National Police Agency figures.

Did the questions themselves get harder?

The content is the same official Rules of the Road and Road Traffic Act. What changed is the number of questions (10 to 50) and the pass mark (70% to 90%), which leaves far less room for mistakes.

How many questions can I get wrong?

Five. With 50 questions and a 90% pass mark, 45 correct passes and 5 wrong is the maximum.

When did the new rule start?

1 October 2025.