Senator Umberg's motor vehicle consumer protection legislation establishes an opt-in framework for manufacturers facing civil actions over vehicle restitution or replacement in California. The bill creates a system allowing manufacturers to elect coverage under specific legal procedures for five-year periods by notifying the Department of Consumer Affairs.

Under the new provisions, manufacturers must decide within 30 days of the bill's enactment whether to opt in for vehicles sold through 2025. For subsequent years, manufacturers must make elections by October 31 for the following five calendar years. The Department of Consumer Affairs will maintain and publish annual lists of participating manufacturers. At the point of sale, manufacturers must inform consumers whether their vehicle falls under these procedures or existing Civil Code provisions.

The legislation also modifies requirements for consumers seeking civil penalties. Before pursuing penalties, consumers must provide manufacturers detailed written notice including the vehicle identification number and repair history. Consumers who sell vehicles after demanding restitution must notify prospective buyers about pending claims. The bill takes effect immediately to allow manufacturers sufficient time to make elections before related provisions become operative on April 1, 2025.