Simulator 139 [exclusive] Download New: American Truck

American Truck Simulator (ATS) is currently on version 1.58 (as of April 2026), the 1.39 update

remains a significant milestone in the game's history, often cited for its fundamental "under the hood" changes. This update was less about visual flair and more about refining the core simulation experience. Core Pillars of Update 1.39 Launchpad Overhaul : One of the most visible changes was a complete redesign of the game’s launchpad

. This new interface paved the way for modern features like the Game Options

manager, allowing players to tweak settings before even loading into their truck. Sound Engine Refinement

: Following the implementation of the FMOD sound engine, 1.39 introduced critical bug fixes and improved interior cab sound mixing

. This made the acoustic environment more realistic, specifically improving the audio feedback for trucks like the Western Star 49X. Lowbed Trailers

: The update introduced ownable lowbed and low-loader trailers, which included a variety of new cargo types and customization options, expanding the "Heavy Cargo" hauling experience. Technical Stability

: Much of 1.39 was "invisible," serving as a preparation phase for future content and stability improvements that the game still benefits from today. SCS Software's blog How to Access Specific Versions

If you are looking to "download" or revert to version 1.39 (often done for mod compatibility): Steam Library Right-click on American Truck Simulator Properties Use the dropdown menu to select temporary_1_39 - 1.39.x for incompatible mods Steam will automatically download the legacy version. Modern Context (Version 1.58) If your goal is the latest experience, the current 1.58 update

released in February 2026 is the gold standard. It features a massive Route 66 Rework

, completely rebuilt cities like Kingman and Flagstaff, and a new Driving Academy

module to help players master complex maneuvers like double trailer handling. Further Exploration Read the original developer notes on the SCS Software Blog for a full breakdown of the 1.39 launchpad changes. American Truck Simulator Version History

for a chronological look at how the game evolved from 1.39 to the current 1.58. Explore the latest Route 66 Rework details

to see how the game's visuals have advanced since the 1.39 era. specific mod

that only works on version 1.39, or would you like to know more about the latest features in the 1.58 update? ATS 1.39 Update Release american truck simulator 139 download new

The 1.39 update for American Truck Simulator (ATS) is a foundational release that introduced significant technical and quality-of-life improvements. While newer versions like 1.55 are currently active, many players still seek out version 1.39 for specific mod compatibility or nostalgia for the introduction of the Freightliner Cascadia®. Key Features of the 1.39 Update

The 1.39 release focused on streamlining the player experience and expanding vehicle customization:

Launchpad Redesign: A completely overhauled startup screen that allows players to access Game Options without loading a profile.

Ownable Lowboy Trailers: These trailers were reworked from the ground up, allowing drivers to buy and customize them for use with Special Transport, Forest Machinery, and Heavy Cargo DLCs.

Sound Improvements: Enhanced interior cab sound mixing and better sound positioning for accessories.

Viewpoints: Expanded "Viewpoints" features were added to highlight scenic landmarks across the map.

New Vehicle: The iconic Freightliner Cascadia® was added to the official truck lineup during this version's lifecycle. How to "Download" and Install 1.39

If you already own the game on Steam, you don't need a separate "download" link. Instead, you can "downgrade" to this version using Steam's built-in tools: Open Steam: Navigate to your Library.

Access Properties: Right-click on American Truck Simulator and select Properties. Select Betas: Go to the Betas tab on the left.

Choose Version: In the dropdown menu, find and select "temporary_1_39 - 1.39.x for incompatible mods".

Update: Steam will automatically begin downloading the files for version 1.39. Important Notes for 1.39 Players American Truck Simulator 1.39 Update Experimental Open Beta

Here’s a helpful post you can use on forums, social media, or a community page like Reddit or Steam:

🚛 [HELP] American Truck Simulator – Understanding Update 1.39 & How to Download It

If you're looking for American Truck Simulator update 1.39, you're in the right place. Note: the latest version may be higher now (e.g., 1.49 or 1.50), but if you specifically need 1.39 for mod compatibility or old saves, here's what you should know. American Truck Simulator (ATS) is currently on version 1

What version 1.39 includes (high-level)

Core engine and stability: Bug fixes and performance improvements across levels and road AI.
New map updates: Fixes and adjustments to existing U.S. states and cities (road geometry, POIs).
Trailer and cargo updates: Improvements to cargo handling and trailer physics, plus fixes to trailer coupling/detaching edge cases.
Vehicle and accessory updates: Minor fixes to truck models, paintjob handling, and accessory mounting.
AI and traffic behavior: Tweaks to AI lane-changing, overtaking logic, and traffic spawn balancing.
Mod compatibility and modding tools: Better stability with common mod types; minor .scs loading improvements.
UI and localization fixes: Corrections for menus, text, and several language packs. (If you need the exact changelog text, check the official patch notes on Steam or the SCS Software blog.)

✅ What's in ATS 1.39?

Colorado DLC support (roads, landmarks, industries)
Lowboy trailers with adjustable rear axles
New loading/unloading animations for certain cargo
Sound improvements for tires and suspensions
Map & UI tweaks

What’s New & Good:

Sound Improvements – Reworked tire/road noise and better interior sounds. Feels more immersive.
Visual Upgrades – New lighting, sharper shadows, and improved reflections.
Map Expansion (Colorado DLC required) – The 1.39 update laid groundwork for Colorado’s release, adding new industries like ski resorts and rock tunnels.
Lowboy trailer rework – More cargo types and better geometry.
Convoy (beta prep) – Background fixes for the later 1.40+ multiplayer convoy mode.

Why You Might Not Want 1.39

Unless you are specifically trying to play an old mod that has not been updated, it is highly recommended to play the newest version.

Newer Updates (1.40+): These introduced much better graphics, better sound engines, and more map DLCs (Texas, Montana, Kansas, etc.).
Mod Compatibility: Most active modders update their mods to the current version. Using version 1.39 means you will miss out on thousands of new truck parts and map additions.

Step-by-Step Installation After Download

Assuming you have the files (either via Steam or a standalone installer), follow these steps to ensure a clean setup:

Backup your documents: Navigate to Documents\American Truck Simulator and copy the profiles and mod folders somewhere safe.
Uninstall cleaner (Optional): If moving from a newer version, uninstall the game and delete the Steam\steamapps\common\American Truck Simulator folder to remove residual shader caches.
Run the installer: If using a manual download, run the setup executable.
- Steam users: Simply select the Beta branch and Steam handles the rest.
Launch with DirectX: Always launch ATS 1.39 with the DirectX 11 launch option (right-click in Steam -> Launch with DX11). OpenGL has shadow bugs in this build.
Configure controls: Because 1.39 predates some controller updates, you may need to manually map your steering wheel or Xbox controller.

Conclusion

The road is calling. The new (legacy) update for American Truck Simulator offers a driving experience that many argue is superior to the bleeding-edge versions. By following this guide for "american truck simulator 139 download new," you are ensuring a stable, fun, and visually reliable trip from Los Angeles to Denver.

Head over to Steam, select the 1.39 Beta branch, or retrieve your authentic offline installer. Fire up the engine of your Western Star 49X, hook up a lowboy trailer, and hit the highway. Welcome to the golden era of American Trucking.

Safe driving, and keep the rubber side down.

Disclaimer: This article is for informational purposes. Always purchase game software legally to receive automatic updates and community support.

Update 1.39 for American Truck Simulator (ATS) is a significant milestone that introduced highly requested features, including ownable lowboy trailers and the legendary Freightliner Cascadia®. While the current version of the game is much further along (v1.58 as of early 2026), version 1.39 remains a popular stable point for players using specific older mods or hardware. Key Features of the 1.39 Update

The 1.39 update, released in November 2020, focused on expanding player ownership and improving the core user interface.

Freightliner Cascadia® Arrival: One of the most anticipated trucks in the game's history, the Cascadia was added shortly after the initial 1.39 release, offering a modern, aerodynamic option for long-haulers.

Ownable Lowboy Trailers: These trailers were completely redesigned, allowing players to purchase and customize them for hauling heavy equipment, such as forest machinery or heavy cargo from specialized DLCs.

New Launchpad UI: The game's startup screen received a complete overhaul to make it easier to manage profiles and mods, and to prepare for future feature integrations.

Enhanced Viewpoints: New cinematic "viewpoints" were added to the Washington and Utah DLCs, featuring replayability and skip functions.

Sound Improvements: The update introduced a turbo sound slider and improved spatial mixing for cabin audio. How to Download and Install Version 1.39

If you need to revert to or specifically download version 1.39, you can do so through the official Steam client: Core engine and stability : Bug fixes and

Open Steam Library: Right-click on American Truck Simulator.

Properties & Betas: Select "Properties," then navigate to the "Betas" tab.

Select Version: From the dropdown menu, find and select "temporary_1_39 - 1.39.x for incompatible mods".

Automatic Download: Steam will automatically begin downloading the necessary files to "downgrade" your game to the 1.39 environment. Compatibility and Content

Version 1.39 is compatible with a wide range of DLCs released up to that point, including the Colorado Map Expansion and the Cabin Accessories DLC. For players interested in the latest features like improved lighting and newer states, ensure your game is updated to the latest public stable version on Steam. ATS 1.39 Update Release - SCS Software's blog

If you’re looking to update your American Truck Simulator experience, Version 1.39 was a milestone release that introduced major overhauls to the game's sound engine and map. 🚛 What’s New in Update 1.39?

Launchpad Overhaul: A redesigned UI for easier navigation between profiles, mods, and DLCs.

Calibex & Viewpoints: Improved scenery and new cinematic camera points throughout the map.

New Trailers: Lowboys and jointed trailers received significant physics and visual updates.

Sound Improvements: Further refinements to the FMOD sound engine for more realistic engine and ambient noise. 🛠 How to Download & Install

Most players use Steam, which handles updates automatically. If your game hasn't updated yet, follow these steps: Open your Steam Library. Right-click on American Truck Simulator. Select Properties > Updates. Ensure "Always keep this game updated" is selected.

Note: If you are currently on a "Beta" branch for a newer version (like 1.50+), you can revert to 1.39 under the Betas tab by selecting temporary_1_39 - 1.39 for incompatible mods. ⚠️ Important Mod Tip

Update 1.39 changed how certain sound and trailer files work. If you use mods, ensure you check your Mod Manager for red icons. You may need to download updated versions of your favorite trucks or maps to prevent the game from crashing.