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  1. Fuel economy 3.0l/100 worse

    Fiesta ST Australia
    Hi all, had a service some weeks back and since then my economy has risen noticeably from about 8.2 l/100 to currently 11.1. My driving pattern did change about the same time, I was doing about 40km a day with mostly 70-80 zones (but constantly fanging it) plus toodling around near home, whereas...