i30 Owners Club

Lost 10 mpg now only 260 miles per tank

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Offline Wolvreen

  • 1st Gear
  • *
    • Posts: 4

    • gb United Kingdom
      Uk, Milton Keynes
Hi,
I have a 1.6 petrol i30 automatic.  It’s done 93k miles.  A few years ago my car changed from 36 mpg to 26 mpg.  The only thing I can think of is a faulty O2 sensor or dirty injectors.  Would these be flagged up on the OBD with alarms?
  • i30 comfort petrol automatic 1.6


Offline eye30

  • Global Moderator
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  • HOS BOSS
    • Posts: 27,371

    • england England
      Wirral

  • Wirral, UK. - 1.4 Petrol Active - Aqua Blue
Is that mpg per the onboard read out or have you calculated by monitoring fuel refills, full tank to full tank?
  • 1.4 Petrol Active I'm no expert, so please correct me if


Offline Wolvreen

  • 1st Gear
  • *
    • Posts: 4

    • gb United Kingdom
      Uk, Milton Keynes
Calculating from refills.
  • i30 comfort petrol automatic 1.6


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