The bill amends the Motor Vehicle Service and Repair Act of 1974 to enhance the regulation of motor vehicle repair facilities in Michigan. Key updates include the introduction of new definitions, such as "auxiliary facility," and requirements for facility owners to provide detailed information during the registration process, including location and compliance with municipal regulations. Certified mechanics are required to display their certification prominently, and the bill outlines a registration process that includes annual renewals and fees for late applications. Facilities with gross revenues exceeding $300,000 must provide proof of revenue, and auxiliary facilities can be approved under the primary facility's registration if they meet specific criteria.

Additional amendments focus on customer consent for repair costs, requiring written estimates before work begins and clarifying conditions under which excess charges may be applied without prior consent. The bill mandates the return of replaced parts unless exempt and emphasizes consumer rights regarding inspection of these parts. It also updates the language regarding the collection of fees, stating that fees "are" credited to the general fund, and establishes an effective date for the amendments of January 1, 2026, allowing for a transition period before implementation. Overall, the bill aims to improve oversight, accountability, and consumer protection within the motor vehicle repair industry.