The star of the V1.40 show is undoubtedly the introduction of the . SCS Software has completely rewritten the rendering code for how light interacts with the game world.
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Steam will automatically download the files for version 1.40. Mod Compatibility in V1.40
If your game crashes on launch after downloading the update, disable all active mods in the Mod Manager and re-enable them one by one to isolate the outdated file. American Truck Simulator V1.40 Download
Version 1.40 was a foundational update released by SCS Software. It fundamentally changed how the game looks and feels. The update was free for all existing owners of the game. It laid the groundwork for future graphical advancements and modern map expansions. Key Features of the 1.40 Update New Visual Lighting System
: New 4x2, 8x4, and 8x6 chassis configurations were introduced for a wide range of trucks, including models from Peterbilt, Kenworth, and Volvo. Western Star 49X Update
You cannot download V1.40 without owning the base game. Purchase American Truck Simulator on Steam (it frequently goes on sale for under $5). The star of the V1
The Western Star 49X received extensive new customization options, including two additional sleeper cabin variants and 36 chassis options across 6x2, 6x4, 8x4, and 8x6 axle configurations. Additional updates include new bumpers, mud flaps, hood mirrors, sun visors, grille guards, and various interior colors.
Furthermore, for players with older gaming rigs (Think Intel HD Graphics or old AMD APUs), V1.40 represents the best balance between visual fidelity and raw performance. The versions that followed (1.41 with Convoy and 1.44 with owned trailers) added more CPU overhead.
While not adding a new state, V1.40 polished existing environments: New Viewpoints Mod Compatibility in V1
: Players gained access to structural variations for various truck models.
The visual lighting overhaul changed how shaders and textures work. This broke many older graphics and weather mods.