over use of petrol

[anaru46]

my 2000 VT 3.8L is using heaps of petrol what could be causing this to happen

[kego]

fuel pressure regulator. same thing happened to me and most of the time that's the problem. hope that helps.

[nick3110]

being heavy on the throttle tends to do it.. how many lt's to the 100km's u doing?

[Dayvo]

Could be your co2 sensors

[50LTRv8]

Is your dash giving you any warning lights? (can be translated to error codes)
I just replaced a 02 sensor but the dash light told me there was an issue.

Any fuel smell?
Is it running rough at startup?

As previously stated could be 02 sensors, regulator, fuel filter or something else.