Check the dropdown menu for available legacy versions. While 0.12 may not always be listed, versions like are often available for compatibility. 2. Official Current Version
If you are nostalgic for this specific update, here is what it brought to the game: New Vehicle: Wentward DT40L beamng drive 0.12 download
If you just want to play the latest content (which includes all 0.12 features and significant improvements), you should download the game through official storefronts. BeamNG.drive is currently in Early Access and typically costs Steam Store Humble Store 3. Key Features of Version 0.12 Check the dropdown menu for available legacy versions