We have guides for 100% in both games in 1.60 and since 1.61 is right around the corner, I’m sure we will get new content over there. At least with South Dakota release for ATS.
Below you can find 100% for ATS and ETS2. As well as 100% on ProMods 2.83.
I’m not sharing my RoExtended profile, but on it I’ve also reached 99.96%, after discovering new roads.
Technically I figured out how to extract map sectors and convert them into discovered items. It feels a bit like cheating, but it’s the only way to discover some mods with glitchy sectors. I won’t be sharing the process, since it’s fairly complicated and requires coding knowledge — I’ll just use it occasionally to create “dream profiles” with fully discovered maps.
But good news from SCS Software – since 1.61 we will get new feature which help us to discover roads faster.

ATS 1.60 – 100% Explored map with all DLC (July 2026, all map DLCs)

[Guide] ETS2 1.60 – 100% Explored map with all DLC (July 2026, all map DLCs)

[Podcast] ETS2 1.60 – 100% Explored Promods map (July 2026, including Vanilla)

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