iv recently bought a sti wagon on an l plate its done 58k miles.the thing is it takes £30 of optimax to fill the tank but it only does 100 miles to the full tank if driven hard or around 150 miles if driven normal.is this normal or is there something wrong with the car??
i would really appreciate any advice so if there is a problem i can get it sorted asap
thanks guys

 

Lambda sensor sounds knackered.
unless your running 500hp then that mileage may be normal

 

wish i was running 500bhp buddy!!!!ill get that sorted asap.thanks