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gas mileage cut in half

  1. Check Engine Light

    smart General Discussion
    Hi all, It's a pleasure to be here and thank you in advance for your help. I have a 2010 Smart Passion with 25,000 miles. About a year ago the check engine light came on. I took it to my mechanic (out of warranty and didn't want to spend Mercedes prices) and he read the code for "fuel...
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