Because ETS2 data is easily accessible, you can create your own unpatchable speed mod by editing the game configuration files.
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400 km/h in ETS2 causes unstable handling, map pop-in, and frequent crashes. For best results, use a realistic 150–200 km/h mod instead. euro truck simulator 2 speed mod 400 km h patched
SCS Software did not patch these mods out of spite. The restrictions stem from fundamental updates to the Prism3D game engine, which was never designed to render environments or calculate physics at racing-game speeds. 1. Physics Engine Instability (The "Krakatoa" Effect)
“Used the patched version to test a map mod’s boundaries. Found a hole near Bern at 380 km/h. Fell into the void for 3 minutes. Totally worth it.” – Because ETS2 data is easily accessible, you can
box. This removes the hard 90 km/h cap for standard single-player jobs. Note on World of Trucks
Reduce the air_drag_coefficient significantly so the truck cuts through the air like a supercar. SCS Software did not patch these mods out of spite
Over the years, SCS Software updated the game's physics engine to better simulate cabin suspension, fifth-wheel stability, and tire grip. When these updates launched, older 400 km/h mods instantly broke. Instead of driving fast, trucks would glitch through the map, spin uncontrollably, or flip over at 100 km/h because the new physics engine could no longer calculate the extreme forces. 2. Game Version Incompatibility
If you don't trust third-party mods, you can manually override the patch limitations using the game console.
The standard game limits trucks to 90 km/h (56 mph), though players can disable this in the gameplay settings to reach around 140 km/h depending on the truck and cargo.