Quote:
Originally Posted by afcbadam
on my 3rd one so dont think they were all broken!! all have returned the same mpg. i must say i do have a heavy foot some times. can a thermostat cause bad mpg by the way. air flow and lamba should be ok it passed its mot on saturday
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a bad thermostat, as in one that is jammed open is the biggest culprit of bad mpg, as the thermostat is open all cooling systems work harder and a car uses stupid amounts of petrol, i simply wouldnt own a zed if i got 210 miles from a tank, that would be under 18mog ?? as said my heavily tuned impreza does more than that.