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Old 12-29-2012, 06:51 PM   #4 (permalink)
MetroMPG
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Location: 1000 Islands, Ontario, Canada
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Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

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90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
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What I was getting at was: if you try it on another vehicle today (not the Jetta), and it still works, then you'd know it's not a general fault. It's something to do with the Jetta.

Either way, sounds like you should contact the company. It would just be more useful for them if you ruled out general fault or Jetta-specific.
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