rAudiA8

used to get 400+/- miles per tank so roughly 100 miles per quarter tank. now i'm barely at 120 miles on the odometer and i'm almost at half tank... any suggestions? i changed my air filter yesterday so waiting to see if that does anything...

96 A6 fwd...

beep-beep

other way to fix it:

check error codes in the ECU
replace fuel, air filter
add injector cleaner
replace spark plugs
replace O2 sensors.

rAudiA8

i did not consider that... i'll look into it.. thanks btw...

rosskuhns

no CEL's I assume? Do you by chance live in an area where they switch to a winter mix of gas? These typically yield worse mileage. Also if it's gotten cold, this will also drop you mpg's.

Ross

rAudiA8

Thanks for all the replies... it turned out ot be the air filter.. i had neglected to change it the past oilchange and that was the culprit... i'm at 353 miles and still have 1/4 tank left!

T90

Plugged catalytic converter