Fuel Economy Suddenly Dropped

[macaroni646]

Hi guys,

My fuel economy suddenly dropped recently from 460km+ per 50L tank to about 400km or less

I tried using different fuel (Caltex and BP) but still the same. I didn't do anything to the car to make it drop like that.

Any idea what it could be? Dirty AFM sensor?

Cheers

[xALmoN]

o2 sensor would be your first port of call.

[scotty nm35]

Pressure test the intake/cooler pipes for leaks.