139 ((better)) Download New - American Truck Simulator

: This update completely redesigned Lowboy trailers, making them ownable and including articulated variants. These trailers were updated with new visuals and the ability to carry a wider variety of heavy cargo.

: Right-click the game title and select Properties . Select Betas : Go to the Betas tab in the properties menu.

: Once selected, Steam will automatically begin downloading the 1.39 files. System Requirements and Mod Compatibility American Truck Simulator Version history american truck simulator 139 download new

The , released by SCS Software on November 5, 2020, introduced significant structural and quality-of-life improvements that continue to serve as a foundation for the game's current mechanics. This update was notable for its complete overhaul of the game's initial interface and the introduction of advanced trailer ownership options. Key Features of the 1.39 Update

The 1.39 version brought several major changes to the simulation experience: : This update completely redesigned Lowboy trailers, making

Because American Truck Simulator frequently updates (with the latest being as of early 2026), players specifically seeking version 1.39 often need to use Steam's versioning tools to "downgrade" or maintain that specific build for mod compatibility.

: The main launch screen was rebuilt for better accessibility, placing the DLC Browser, Mod Manager, and Profile Manager together. It also introduced a new Game Options feature, allowing players to adjust settings before even loading into their truck. Select Betas : Go to the Betas tab in the properties menu

: Version 1.39 officially added the Freightliner Cascadia® to the game's fleet.

: Navigate to your Steam Library and find "American Truck Simulator.".