Dear Christian,
Go to administration Vehicle Manager Language tab. There you will see your language and may update any constant with it help.
There are you may update also values for every list box.
Rename your field you can with help VehicleManager :: Language Manager - put any name of custom field in Value constant choose Language and rename as you need
How change mandatory fields below:
ordasoft.com/Forum/VehicleManager-compon...d-Mileage.html#19257
Best Wishes,
Taras
OrdaSoft team