If you are a fan of ETS2 and ATS maps discoverability, like I am, and have no time and desire to visit every small part of map, then Trucksim is the best source since periodically after the game updates, new expansion and reworks I discover the roads and cities and share not only profile but also a text version with strings which you can inject to your game.sii and get the same results in couple minutes. Unfortunately it consumes a lot of my time and effort (both discovery and video guides). But I receive in return your positive feedback, likes and guides views on Youtube.
I’m trying to optimize the process and e.g. for American Truck Simulator do AI voiceover and reuse the guide so the ATS tutorial video many times faster (and I share this more often.)
Currently we have 100% in ATS 1.57 with new Louisiana DLC and you see the guide below and I’m on the home stretch in Europe as well so probably ETS2 guide with Nordic Horizons and Scandinavia refresh will be done in January. As well as secret roads guide.

If you’re using older strings (for instance for 1.56) they will sill work but undiscovered areas will remain grey.

[Guide] ATS 1.57 – 100% Explored map with all DLC (with Louisiana) (December 2026, ATS 1.57, all map DLCs with Louisiana)

100% Discovered Map of ETS2 1.56 (Profile and save game) (September 2025, ETS2 1.56, all map DLCs up to Greece, not includes Scandinavia Rework and Nordic Horizons DLC)

I do these discovery since 2017 and I discover whole map almost on every game versions including all expansions and reworks.