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  • Updated for December 2024
  • Based on official Iowa Driver's manual

Free IA DOT Diagnostic Test 2024

If you want to be done studying for your driver’s exam before the corn gets high, start off with this quick DOT diagnostic that includes the 15 questions that most Iowans get wrong. With the instant feedback, you will get an idea of what you still need to study. Then you can move on to our comprehensive hay pile of questions based off the Iowa driver’s manual that will help you learn everything you need to know to get the requisite number correct. You can only miss 7 out of the 35 questions and still get a passing score, so don’t risk it. Make sure you have a handle on all of the possible exam permutations.

  • Perfect for learner’s permit, driver’s license, and Senior Refresher Test

What you need to know

5 min to complete
Available in EN, ES, RU
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.

What to expect on the actual IA DOT exam

25

questions

20

correct answers to pass

80%

passing score

14 y/o

minimum age to apply

Are you in another state?

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Since our foundation in 2010, Driving-Tests.org has led the way in online driver's education, with over a decade of experience. Our dedicated experts, bringing together more than 50 years of collective expertise, have established us as the largest non-governmental organization in the U.S. solely focused on driver education. We go beyond the official manuals, offering unique interactive experiences and support like audio guides and an AI Assistant, to cater to different learning styles and needs.
Helping hundreds of thousands to ace their tests, our resources have earned a 4.7-star rating from over 14,500 reviews. Our goal is to make your path to becoming a confident driver as straightforward and effective as possible.

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Pass the knowledge test the first time, guaranteed.