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29th September 2019, 23:48 | #51 | |
This is my second home
75 Tourer 2.5 Auto, 1.8T, 75V8ZT Join Date: Jun 2007
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30th September 2019, 14:35 | #52 |
This is my second home
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CC was not in use and driving through the city revealed 27mpg. I will try again tomorrow.
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30th September 2019, 14:59 | #53 | |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
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Fuel consumption measurements
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You don't say whether you zeroed the display whilst already driving in the city. If you did, then 27 mpg is not a valid figure either. It's a short term "snapshot" in specific driving conditions. To be able to quote a figure for overall, long term fuel consumption, the trip computer must be zeroed before the first cold start then left alone until at least an entire tank full of petrol has been consumed. Alternatively, use the brim-to-brim method under the same conditions. I'm afraid that I can guarantee that the result will not be 42 mpg! Simon
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30th September 2019, 15:04 | #54 | |
This is my second home
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30th September 2019, 18:39 | #55 |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
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I know. Cruise control has nothing to do with it. I'm curious to learn why you think it has. It is possible to drive at a constant 55 mph using manual control of the accelerator. The human body is more sophisticated than cruise control.
Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. Last edited by SD1too; 30th September 2019 at 18:41.. |
30th September 2019, 19:41 | #56 |
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I never reset the trip computer, that way you get an average over many thousands of miles, and it is within 1/2 mpg of brim to brim
Brian |
30th September 2019, 20:01 | #57 |
This is my second home
75 Tourer 2.5 Auto, 1.8T, 75V8ZT Join Date: Jun 2007
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If you do that, then why not just record the total cumulative mileage of the main counter every time.?
Not re-setting the trip counter somewhat reduces it's usefulness, I would say!. But also you prevents you from picking up any sudden changes, quickly. And since you have so many thousand miles of data, what do you get? and in what car? Ahh, let me guess..... 33mpg in a ....Marina???
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30th September 2019, 20:20 | #58 |
Gets stuck in
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Cos I can be very boring :¬)
Range Rover 3.9 efi - 12032 miles - 15.8 (mostly towing a horse box) Rover 825 sd - 36927 miles - 37.38 Rover 400 1.6 - 60655 miles - 40.52 Rover 25 1.4 - 9267 miles - 44.04 Rover 75 1.8 man - 13505 miles - 37.34 Rover 75 2.0 man - 22726 miles - 32.70 MGF 1.8 - 5245 miles - 39.71 Rover 75 2.0 auto - 38928 miles - 29.56 Various different jobs/circumstances over the years so not 100% comparable
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The Story So Far: Austin A35, Morris Oxford, Triumph Herald, Mini 850, Mini 1000, Austin Allegro, MG Midget, MGB GT, Rover SD1 2600, Austin Maxi, Rover 200, Rover 825, Rover 800, Bedford TK, Range Rover 3.9 efi, Rover 400, Rover 100, MGF, Rover 25, Rover 75 1.8, Rover 75 Connoisseur SE 2.0 V6, MGF 1.8i, Rover 75 Connoisseur 2.0 V6 Auto, Morris Eight Series E, Morris Minor 1275. |
30th September 2019, 20:20 | #59 |
Posted a thing or two
V6 2ltr auto in copperleaf +CDTI Auto in Royal Blue on loan to Son Join Date: Jul 2010
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I do mine with an XL file, amount of fuel(brimmed every time) and mileage covered, XL then works out average MPG at each fill (and other useful, to me, information).
This is the summation at the end. Total gallons 68.32 Average MPG 41.39 Total miles 2828 Cost/Mile 14.10 Pence per mile Total fuel expense £398.87 Bought the car 29th May 2019, last fill 22nd Sept 2019, 2.0L CDTI auto
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30th September 2019, 20:37 | #60 | |
This is my second home
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