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Scangauge uses the same inputs as the car's computer to measure the fuel used, but the set procedure involves calibrating with a couple of fill ups from the station.
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I see. Here's the thing I couldn't work out, car gives current MPG, trip MPG, average speed, distance, range but the one that interests me is "fuel used". Surely if I brim the tank every time, once the "range" reading goes blank (usually about 80-90 miles) I could use the fuel used (measured in UK gallons to one decimal place eg 10.3 etc) reading to work out roughly how much is left. I might start making notes of the "fuel used" reading and compare it to the fuelly calculations. If it proves accurate, I can then use it as a guide once the range is empty.
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I've also got an issue with indicated versus real mpg. In September I traded my Audi A1 1.4 (petrol) which I'd owned for 22 months from new, and covered 40,000 miles in that time. During that time I very carefully monitored real consumption and compared with that indicated by the in-car computer. It NEVER differed by more than 2 mpg, and was usually bang on. My new car is another Audi A1 (1.6 TDI) the fuel consumption is (unsurprisingly being a DERV,) far better, the main reason that I bought it, however the difference between the indicated mpg and the real figure is huge – anything up to 12 mpg.Has anyone else seen similar?Is this another attempt by VW Audi to mislead the public? |
Hi there. Do you brim the tank consistently? Only reason I ask is that when I fill my car, it clicks off, then it clicks off again, but the truth is, if I gently squeeze the trigger, I get a lot of extra fuel in. Only when I can see fuel sitting in the cap am I happy that I refilled to the same level as the previous tank. Generally dash V's actual readout and 2-3 Mpg different, so 12 seems a bit crazy!
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no I always fill until the pump cuts off. I only ever use two or three filling stations, and try and go for the same pump each time to be as consistent as possible. The issue isn't that there's an error between my method and the cars computer, its that two very similar cars (OK different engines, but similar computational software) produce completely different results. I've queried it with my Audi dealer and they say its "odd" - very helpful P |
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