Free IA DOT Diagnostic Test 2025
- Perfect for learner’s permit, driver’s license, and senior refresher test
The Field of Dreams may be magical, but you will need more than a little hocus pocus to make a Iowa driver’s license appear. Whether you are driving the main highways or back roads, you need to know how to handle yourself behind the wheel. The important thing to remember is not all study materials are created equally. Your study method of choice will largely determine your readiness to take your Iowa driver’s license knowledge test. Iowa requires you to answer 80% of the 25 questions correctly to receive a passing score. You are not going to have a lot of room for error. How can you best prepare to hit the target and avoid the obstacles to passing your knowledge test?
This free Iowa Department of Transportation Diagnostic Driving practice test is the only resource you will need to become an expert in driving safety. The practice test has 15 of the most commonly missed questions on the Iowa knowledge test to prepare you to handle unclear or complex questions. By not concentrating your study on the questions you already know, you will wisely budget your time and increase your chances of passing the official test on your first attempt. Not only will it expertly prepare you but the practice test will show everyone you are taking your responsibility as a driver seriously.
Based on the most recent Iowa Driver’s License Manual and up to date as of October 2025, this practice test is your best choice for test preparation. Study guides are commonly used for test preparation. However, they are not as effective as the practice test. If you submit a wrong answer, the practice test provides a detailed explanation of what you need to understand. While study guides are designed to help you memorize the answer, the practice test goes further and provides the information that makes an answer correct. As a result, you can successfully retain the information in memory and apply it when necessary.
People may come to Iowa for Ragbrai, but you can go and find out more about practice tests throughout the U.S. states and Washington D.C., by visiting https://driving-tests.org/academy/drivers-license.
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Verified for accuracy: October 2025
Reviewed by Steven Litvintchouk, M.S.
Chief Educational Researcher (ACES member)
Methodology & Editorial Policy
What to expect on the actual IA exam
questions
correct answers to pass
passing score
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We know how Driver's Ed goes
Noses sneeze. Babies cry. Frustration groans. And when it's finally time to take your test, you're sweating. Thirty minutes later, you're crying. Because despite your best efforts. You failed. Next thing you know, you're chasing a Waymo in circles to get home (embarrassing!).
At Driving Tests, we know emotions can get in the way of doing what you need to do. So we deliver Driver's Ed that makes it easy to start, and even easier to finish. We get you DMV Smart ASAP. Testing you with real, up-to-date questions. Backing up tricky driving situations with easy-to-grasp visuals & engaging practice tests that reaffirm what you know, and test you again on what you don't. So by the time test day comes - you *own* the DMV. Your only worry? Convincing the proctor you didn't cheat ;)