If that is the factory recommended service interval, yes. Some engines will bend valves if the belt breaks.
The Honda engine is what is called an "interferance" engine. That means that if the cam and the crankshaft are not aligned correctly (by the timing belt) the piston will strike the overhead valves. Should this happen,it is an expensive repair, far more expensive than a timing belt. So the definitive answer is yes, it is really necessary to change the belt at regular intervals. You may get away with letting it go a bit longer but you're risking major engine damage.
105000 miles
change the timeing belt every 105000 kms on 1999 passat 6 cylinder 2.8 engine
105000 milesd
105000 mi
every 105000 miles
yes or maybe
It is not necessary to change timing gears when changing a timing chain unless they have become worn. You won't know if this is the case until you get the cover off and inspect them. It is necessary to change any chain tensioners when you change your timing chain.
it has a timing chain, not a rubber belt. no need to change unless necessary
You need to change the timing belt each 90K miles.
if it is the v6 it has a belt not chain that needs replacing every 105000 miles
There is no timing belt. There is timing chain. You do not need to ever change it, they last. Except if you change smtg else around, like water pump.