To download Euro Truck Simulator 2 version 1.45 , you have two primary methods: using Steam's version branching or downloading the official free trial. Please note that while a free trial is available, the full game is a paid product. eurotrucksimulator2.com Official Methods to Access Version 1.45 Steam Beta Branch (Recommended)
If you own the game on Steam, you can "downgrade" or lock your game to version 1.45 easily: Open your Steam Library. Right-click on Euro Truck Simulator 2. Select Properties. Navigate to the Betas tab. download euro truck simulator 2 version 145 free
The official ETS2 demo from 2013 was based on v1.4.1 or 1.4.5, but it restricts playtime to 60 minutes or level 5. You can still find it on archive.org as a legal download. To download Euro Truck Simulator 2 version 1
For version 1.45 specifically, you cannot get it legally without purchasing the base game first. Right-click on Euro Truck Simulator 2