A lawsuit filed in federal court yesterday by Wiegand Mack Sales & Service, a Detroit, Michigan-area authorised Mack truck dealer, against Mack Trucks of Allentown, Pennsylvania, alleges that the truck maker violated federal and state law and undermined its dealership network by making direct sales of trucks to its dealers’ potential customers and by engaging in illegal price discrimination.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

According to a statement by the plaintiff’s law firm Duane Morris, this is the second such suit brought by a Mack dealer against Mack Trucks in the last 14 months. In July, 2002, Toledo, Ohio-based Toledo Mack Sales & Service filed a similar suit against Mack Trucks. That case remains pending in federal court in Philadelphia.

Like many states, Michigan law expressly forbids motor vehicle manufacturers from “sell[ing] any new motor vehicles directly to a retail customer other than through its franchised dealers.” The suit filed yesterday alleges that Mack Trucks improperly sold trucks directly to Wiegand Mack’s potential customers, including body builders, leasing companies and so-called “national accounts,” and also improperly sold trucks directly to Wiegand Mack’s competitors on more favourable terms than were made available to Wiegand Mack.

The suit also contends that Mack Trucks violated Michigan law by failing to fully reimburse Wiegand Mack for warranty work it performed. Wiegand Mack is seeking damages in excess of $US1 million.

Just Auto Excellence Awards - Nominations Closed

Nominations are now closed for the Just Auto Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact.

Excellence in Action
Continental has secured the Window Displays Innovation Award in the 2025 Just Auto Excellence Awards for its Window Projection solution, transforming side windows into dynamic, data-rich canvases. Discover how this compact projection technology and intelligent software are reshaping in-car UX and opening fresh revenue streams for OEMs and mobility providers.

Discover the Impact