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| Steve D Member Since: 19 Jan 2013 Location: Essexshire Posts: 4109  
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Left earlier today to visit the Mo-in-Law. She lives about 15 miles away, 13 of which is on a dual carriageway and I normally go 60-70mph. When I set off, I was showing 279 miles left in the tank. Approx 30 miles later, instead of having 249 miles left, I've now got 324 miles left and when I brimmed the tank on Friday, it was showing 330 miles available and I've already covered just over 100 miles. I'm assuming it constantly estimates the miles left in the tank based on current driving style. Is that correct? Past: FL2 TD4 HSE Auto
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10th Mar 2013 5:16 pm |
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| SYFL2 Member Since: 16 Jun 2012 Location: Sheffield Posts: 2594 
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Could said mother in law be haunting your car ? |
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10th Mar 2013 5:29 pm |
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| taztastic Member Since: 03 Feb 2011 Location: North West Posts: 8652 
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10th Mar 2013 5:32 pm |
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| dunkley201 Member Since: 09 Jul 2011 Location: Lincolnshire Posts: 2739
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Steve - you have answered your own question! Mine does the same BTW. |
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10th Mar 2013 6:54 pm |
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| Steve D Member Since: 19 Jan 2013 Location: Essexshire Posts: 4109
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That's good to know then. On my previous 2 cars, a Focus and a Golf, the remaining miles were fixed from when you first started the car and it never took your current driving style into consideration. Average mpg was reset on start up on both those cars too. Past: FL2 TD4 HSE Auto
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10th Mar 2013 7:56 pm |
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| alex_pescaru Member Since: 12 Mar 2009 Location: RO Posts: 4642 |
For the range value the car needs two things:
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10th Mar 2013 8:13 pm |
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| Past master Member Since: 30 Jun 2010 Location: Isle of Ely Posts: 2710
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Yet more information we didn't know. Alex you are amazing! |
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10th Mar 2013 10:23 pm |
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| piattj Member Since: 18 Jan 2012 Location: where the crowds aint... Posts: 1235  
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...
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11th Mar 2013 9:53 am |
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| Pete The Biker Member Since: 30 Sep 2012 Location: Leicestershire Posts: 77
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I know you are right in what you say, because this morning I have found this reference in Topix. It does surprise me though, because since I have had my car (6 months) the average fuel consumption figure on the dash has always been very close to my own calculation of average mpg on a brim-to-brim calculation. (I reset the computer each time I refill). It doesn't seem to reflect the mpg in the last 30 miles. To put it another way, within the same tankful I have been able to rationalise the reported mpg against the journeys made e.g. if i do say 150 miles of driving on local roads I get say 29mpg reported average mpg. If I then do the next 150 miles on motorway at say 37mpg, the reported average mpg creeps up, so that by the time the tank is nearly empty the average mpg is 33. This was what I was expecting on the assumption that the average was calculated on consumption since the computer was reset. Surely if the avg mpg is calculated in the way described by Alex and Topix, my reported avg mpg at the end of 300 miles should be 37mpg i.e. because the last 30 miles was on motorway at 37mpg? Pete |
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14th Mar 2013 9:18 am |
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