If you prefer not to use a mod, you can manually edit your save file's money_account line in the GameSpot guide or use external tools like Cheat Engine to modify your current cash and XP values directly.
Move the downloaded .scs file into your Documents\Euro Truck Simulator 2\mod folder. If you prefer not to use a mod,
Many versions include reduced fuel costs at garages, 100% truck refund values, and no penalties for canceling jobs or damaging cargo.
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Enable the mod in the game's Mod Manager . It is often recommended to set it to High Priority if you are using other map or economy mods to ensure it overrides default values.