Wisconsin CDL Written Test — Questions, Cost & Study Tips (2026)

Studying for your Wisconsin CDL written exam? Here is what applicants typically need to know before visiting Wisconsin DMV.

How many questions on the Wisconsin CDL test?

Wisconsin general knowledge written exams commonly include about 50 multiple-choice questions for the core CDL knowledge test. Endorsements such as air brakes, combination vehicles, hazmat, and passenger are separate written tests if your license class requires them.

PassCDL mirrors this structure: start with general knowledge, then add endorsement practice for the tests you need.

Wisconsin CDL test cost (approximate)

Written exam fees at Wisconsin DMV are typically $25–$40 per attempt (varies by office and endorsement). Failing and retesting can cost more than a month of PassCDL Pro — many students prefer unlimited practice before test day.

Wisconsin study tip

Wisconsin DMV CDL applicants pass written tests before the skills exam at DMV centers.

Free WI CDL practice test

Use our Wisconsin CDL practice test for scored questions and explanations. PassCDL Pro adds full exam simulations, all endorsements, and unlimited retakes.

See also: How many questions on the CDL test? · CDL general knowledge study guide

Educational practice only — not affiliated with Wisconsin DMV or any state DMV.