Before diving into the download process, it is crucial to understand what made ATS 1.39 a game-changer. Released alongside the Colorado DLC in November 2020, this update introduced several core mechanics that are now standard in the game.
When trying to downgrade to 1.39, Steam may throw this error.
This is the most common issue.
Most players seeking version 1.39 do so because their favorite mods haven't updated for newer releases. Here is how to manage mods specifically for this version.
American Truck Simulator 1.39 is a past update of SCS Software’s trucking simulator that introduced vehicle and physics improvements, world/road updates, and mod compatibility changes. Below is a concise, structured article covering what 1.39 included, how to obtain it safely, and important notes for installation and mods. american truck simulator 1.39 download
This is the standard method for 99% of players. By default, Steam auto-updates to the latest version (currently 1.48+ as of late 2023). To get American Truck Simulator 1.39 download, you must use the Steam Betas feature to downgrade.
Step-by-step instructions:
Important Notes on this method:
Using the in-game Mod Manager, arrange your active mods this way to avoid crashes: Before diving into the download process, it is








































