P12 question KMH to MPH

I have a 2002 2.2 dci with sat nav.. Since i purchased it most items are displayed in KH/H and not MPH or MPG for fuel settings etc...

I looked through manuals and cannot find away to change it... I phoned three local dealers and all have given diffrent responses from... "I dont know sir" to It might be in your Manual...

Please could someone elighten me as how to do this

Regards in advance...

hello, If i remember correctly, you can change the settings in the satnav, you may have to insurt the setup disc in the satnav and make sure you select mph. this should set it back to mph. ( i am going on the fact that this is not a import)