SIXT Faces Scrutiny Over Rental Fees in Wisconsin

The state is reviewing claims that the rental company charges prohibited fees for vehicle damages.

Updated on Oct. 26, 2026 in Auto Parts

Isometric editorial illustration of a modern car rental return bay, rendered in muted teal, slate, and oxblood tones. — Wisconsin regulators are investigating SIXT Rent A Car over allegations of unlawful damage fees and administrative charges levied against customers. AI Illustration. Upload story photo >

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SIXT Rent A Car faces scrutiny for charging customers unlawful damage-related fees in Wisconsin throughout August 2026. State law prohibits rental companies from assessing charges for diminution of value, administration, or appraisal costs.

Why it matters

The Wisconsin consumer protection agency is reviewing customer complaints regarding these practices, which may violate state rental regulations. Milwaukee Mitchell International Airport officials have indicated that the company could lose its lease if it fails to comply with the law.

Multiple customers reported prohibited fee charges ranging from $137 to $500 per incident. These fees were included in damage invoices totaling as much as $6,265 before some claims were dropped by the company.

The players

SIXT Rent A Car

This is an international car rental company that operates locations at airports across the United States.

Wisconsin Bureau of Consumer Protection

This is the state agency responsible for reviewing consumer complaints and enforcing state laws regarding business practices.

Milwaukee Mitchell International Airport

This is a commercial airport serving the Milwaukee area where the rental company maintains operations.

Hertz

This is a major global car rental firm that operates in Wisconsin and does not charge the prohibited fees in question.

The details

Customers report receiving invoices for damage and associated fees days after returning vehicles, including charges for pre-existing conditions like minor dents. While SIXT has dropped specific claims for several individuals, others have seen their bills referred to collections.

August 18, 2026: SIXT dated the damage claim invoice for Todd Lofgren.
September 15, 2026: Brenda Bassett received a damage claim letter.
September 28, 2026: SIXT dropped the damage claim for Todd Lofgren.
October 21, 2026: The bill for Christopher Nienhuis was sent to collections.
October 23, 2026: Representatives from SIXT and Hertz provided statements.

Roadmap

The rental industry faces ongoing scrutiny regarding transparency in damage assessment and administrative billing practices. This current situation highlights a tightening regulatory environment that contrasts with the internal policies of major competitors.

Customers renting vehicles in Wisconsin should review all damage invoices closely for prohibited administrative or appraisal fees. Those who believe they were charged unlawfully can contact state authorities to contest the validity of the claims.

The takeaway

Travelers should document the condition of a rental vehicle with photographs during both pickup and return to protect against disputed damage claims. Understanding state-specific consumer rights can help renters identify and contest unauthorized charges.