BeamNG.drive version 0.4.0.6 is a legacy alpha build from 2015. Finding a legitimate download for this specific version requires using the game's official version branching system on Steam rather than third-party sites, which often host unsafe files. Accessing Legacy Versions
Select the desired legacy branch (e.g., 0.4.8 or earlier if available). Technical Specifications (Version 0.4.x)
Steam will automatically begin downloading the older files and "downgrade" your game to the 2015 build. Key Features of Version 0.4.0.6
Steam often keeps older "LTS" (Long Term Support) branches available (like 0.4.x or 0.24.x) for users with older hardware or specific modding needs.
If you own the game on Steam, you do not need to look for external download links, which often carry security risks. Open your Steam Library and right-click BeamNG.drive. Select Properties, then go to the Betas tab.