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  • 0  (6 mistakes allowed to pass)

Free MI CDL Diagnostic Test 2025

Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements.

To get a rough idea of how much you know about commercial driving rules in Michigan, try our MI CDL diagnostic test. It contains 30 multiple-choice questions on a variety of topics in commercial driving: air brakes, hazardous materials, buses, combination vehicles, and tanker trucks. This test will help you quickly identify gaps in your knowledge of commercial driving, which will be especially useful if you’re just starting to prepare for the CDL knowledge exams. Each practice question includes a picture and has four possible answers. Choose the most complete and correct answer for each question. Each question also comes with an optional hint if you need it and an explanation of the correct answer. Try our CDL diagnostic test and see whether you are ready for the real thing. Good luck, and drive safely!

Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
Free MI CDL Diagnostic Test 2025
MI commercial driver's license
Based on official MI exam questions
Steven Litvintchouk, M.S., Chief Educational Researcher at Driving-Tests.org

Authored and fact-checked by Steven Litvintchouk, M.S.

Chief Educational Researcher, Driving‑Tests.org (ACES member)
Last verified for accuracy on
Methodology & Editorial Policy

5 min to complete
Available in EN and ES

What to expect on the actual MI permit test

50

questions

40

correct answers to pass

80%

passing score

Real Michigan drivers who passed first try

Verified student reviews • Shared with permission

One of the best investments I've made by far.
I couldn't believe the accuracy, but between the easy, user-friendly layout and structure, it is a 100% guarantee program
WGS
The layout of the program was amazing.
The little words of encouragement during tests was great. I was able to take the DMV test sooner then expected and only got 1 question wrong which was my fault. I would absolutely recommend this program to anyone.
RH
Very helpful system.
This is the way I study for a test best! Over and over and over again.. As I prepare myself reading the State Commercial Driving Manual, your test questions touch on everything that's in the Manual and then some! I have found myself being much more eager and confident using your methods.
TM
Great!
Used this to help supplement my studies for mi cdl permit test read the manual and do all the test prep on here exactly the way they reccomend it including passing the exam simulators 3 times and you will fly through the state exam it will be like muscle memory
RB
Top notch learning materials.
Initially I thought that reading the 165 page Michigan CDL manual alone would be sufficient. Then I was referred to Driving-Tests. org. After trying a few sample tests I realized I needed much more practice. My first run at the Secretary of State Office allowed me to be successful on everything except the combination test. It was my fault for not preparing enough. Second day I was easily successful and now have my CDL learners permit. I think their testing material is excellent and I think everyone should use it.
SW

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