If the Steam method didn't work, or if you have a non-Steam version, you must edit the game's configuration file manually.
Step 1: Find the Configuration File
The file is usually located in your Documents folder. Navigate to:
Documents\My Games\FormulaOne2013\hardwaresettings
Note: If you cannot find it there, try looking in your game installation folder (e.g., C:\Program Files (x86)\Steam\steamapps\common\F1 2013\hardwaresettings).
Step 2: Edit the File
Step 3: Change the Language Code Replace the word inside the brackets with your desired language. Use the two-letter codes below:
Example:
If you want to change it to German, the line should look like:
<language>german</language>
Step 4: Save and Exit