cam belt

[new to vw]

hi there what milage would you change cam belt on a 2.8 V6 passat....
trawled the web and cant find anything out .......tried search button on here but doesent seem to work...
thanks for any help
lee:1zhelp: :1zhelp: :1zhelp:

[Vagnum]

what engine code is it? vw recommend every 4 years to have the belts replaced!