Crazy fuel consumption

[PieterB]

Hi all,

I've got a 2005 Chev Aveo LS 1500cc manual. It has over 300 000km's on the clock.

The issue started last week where the fuel consumption increased suddenly from the normal 8.0 L/100km to over 16+ L/100km.

It is so bad that if I do a steady 80km/h I could see the fuel gauge visibly dropping.

I could find no evidence of any fuel leaking, dripping or even dust collecting on all the hoses, fuel filter and bottom of fuel tank.

There is a smell of petrol while driving but not a lot.

I've replaced the purge valve out of desperation, so far it seems better but not much.

The engine still perform as usual no loss of power and runs smooth so I made the assumption that it is not the fuel injectors.

Does anyone have an idea as to what else it could be?

Regards

Forgot to mention that there is no engine light or any codes on the scanning tool