Many older mods (especially lighting, weather, and skybox mods) will break in V1.40. Disable them before updating. Map mods designed for 1.39 must be updated by their creators.
Right-click American Truck Simulator in your Steam Library. Properties: Select the Betas tab.
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. American Truck Simulator V1.40 Download
Disable older winter or realism weather mods until you download their updated V1.40 variants.
Featured the California Rescale/Rebuild , adding new road networks and updated city layouts to the original game map. Many older mods (especially lighting, weather, and skybox
Popular map mods like ProMods Canada or Coast to Coast require versions specifically compiled for V1.40 lighting.
: Metallic truck paint and wet asphalt look significantly more lifelike. Extended Chassis Update Right-click American Truck Simulator in your Steam Library
Steam will typically update your game to the latest stable version automatically.
Steam automatically manages your game versions. If you want to play V1.40 specifically, follow these steps: Open the client. Go to your Library .
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v1.40 introduced a completely rewritten lighting and color correction system . Day/night cycles, sunrise/sunset, tunnel lighting, and headlight behavior are dramatically improved. The world feels more vibrant and realistic.