recently my fuel economy has just plummeted :| lol ive got a 1 litre pre facelift mk2 ibiza and i was doing around 40-50 miles off a fiver but now its doing barely 10 and about 30miles to a tenner! a fiver used to get the needle to 1/4 of a tank and now it doesnt even get it off the redline :S i thought it may just be the gauge but this theory went out the window when i ran out of petrol in the middle of selly oak about an hour ago :O lol has anyone got any suggestions of what this could be? i think i saw a thread about catalysts going and messing the fuel economy up is this what it is and how much will it be to sort out?