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What one do I go by

Discussion in 'Motoring Related Discussion' started by Stulc, May 4, 2019.

  1. Stulc

    Stulc Senior Member

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    Location:
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    Your Mercedes:
    W203 C180k
    For mpg ie "after start" or "After reset" because there is nearly 10 miles difference
     
  2. flowrider99

    flowrider99 Senior Member

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    Your Mercedes:
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    "After start" resets after every journey so it is only the mpg for the current trip, "after reset" covers multiple trips until you rest the counter.
     
  3. rorywquin

    rorywquin Senior Member

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    One is longer term the other (after start) is your last trip. Both are relevant!
     
  4. Blobcat

    Blobcat Moderator

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    Your Mercedes:
    R171 SLK280 3.0, Land Rover 110 County SW
    And neither are accurate...
     
    rorywquin and quinnj3 like this.
  5. quinnj3

    quinnj3 Senior Member

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    Your Mercedes:
    2010 E350 CDI BlueEfficiency Sport Coupe Auto 227bhp
    Agree, mine is consistently 3 mpg out from stated. Real mpg is always worse than displayed.


    Sent from my iPhone using Tapatalk
     
  6. rorywquin

    rorywquin Senior Member

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    I've never checked mine (accuracy) but then, I don't really care.
     
    LostKiwi likes this.
  7. LostKiwi

    LostKiwi Senior Member

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    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    As above, however "After Start" will not reset just by turning key off and on. It requires a significant time lapse with ignition off (not checked exactly but over an hour). This enables trips to be measured where you may take a rest break or fuel stop.
    Both counters can be manually reset using the reset button.
     
    Blobcat likes this.
  8. jp williams

    jp williams Senior Member

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    2002 E class 2.2 cdi auto estate, Lexus GS 450h
    Mine has been 8% more optimistic for the last 16 years!
     
  9. malcolm210

    malcolm210 Senior Member

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    Woefully inaccurate on short journeys (as you would expect) but very accurate over long distance touring of 500 miles (both measured brim to brim)
     
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  10. Srdl

    Srdl Senior Member

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    Four hours.
     
  11. LostKiwi

    LostKiwi Senior Member

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    Cheers. Knew it was more than an hour but less than a work day.
     

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