Many classic map expansions, truck physics mods, and sound packs were perfected for 1.39 and never updated for later versions.
The 1.39 update was highly praised for its focus on trailer customization and UI improvements:
Downloading version 1.39 of Euro Truck Simulator 2 (ETS2) is a common request for players who need compatibility with older mods (like ProMods or RusMap) that may not support newer game versions. While the game automatically updates to the newest version on most platforms, you can manually revert or "downgrade" to version 1.39 through official channels. How to Download & Install Version 1.39 download euro truck simulator 2 139 top
New spatial mixing for truck cabs and a "Turbo sound slider" were added to give players more control over engine whistling. How to Download Version 1.39
Beyond the marquee features, 1.39 stabilized the game’s engine, preparing it for future lighting overhauls (which arrived in 1.40) and expansive DLCs like Iberia . The Appeal of Technical Precision Many classic map expansions, truck physics mods, and
Adds highly detailed, realistic Russian highways and rural backroads. 🔊 Sound and Graphics Packs
: Steam will automatically begin downloading the 1.39 files (approximately 33 GB if starting from scratch). 🚛 Top Features in Update 1.39 How to Download & Install Version 1
: Profile saves made in newer versions of the game (e.g., 1.48) will not work if you downgrade to 1.39. It is best to start a new profile or use a backup from 2020.
What are you running so we can optimize your performance?
If you are using a laptop or a 5+ year old desktop, v1.39 runs significantly faster than v1.45+. You can run mirrors on ultra, high traffic density, and high-res textures without stuttering. Framerates are stable at 60 FPS even on integrated Intel UHD graphics.