(1g) Whoever, while possessing a dangerous weapon and by the use of, or the threat of the use of, force or the weapon against another, intentionally takes any vehicle without the consent of the owner is guilty of a Class C felony.

(2) Except as provided in sub. (3m), whoever intentionally takes and drives any vehicle without the consent of the owner is guilty of a Class H felony.

(3) Except as provided in sub. (3m), whoever intentionally drives or operates any vehicle without the consent of the owner is guilty of a Class I felony.

(3m) It is an affirmative defense to a prosecution for a violation of sub. (2) or (3) if the defendant abandoned the vehicle without damage within 24 hours after the vehicle was taken from the possession of the owner. An affirmative defense under this subsection mitigates the offense to a Class A misdemeanor. A defendant who raises this affirmative defense has the burden of proving the defense by a preponderance of the evidence.

(4m) Whoever knows that the owner does not consent to the driving or operation of a vehicle and intentionally accompanies, as a passenger in the vehicle, a person while he or she violates sub. (1g), (2), (3), or (3m) is guilty of a Class A misdemeanor.

(5) Whoever intentionally removes a major part of a vehicle without the consent of the owner is guilty of a Class I felony. Whoever intentionally removes any other part or component of a vehicle without the consent of the owner is guilty of a Class A misdemeanor.

http://docs.legis.wisconsin.gov/statutes/statutes/943/III/23