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On 19 May 2004 at 23:32, Dave Hall wrote: > It's interesting to compare the vehicle analysis figures for a '69 Fastback FI > auto by the Motor Industry Research Association:- > Motorways at 68.1 mph 29.5 mpg (imp); 23.6 mpg (US) > Main roads at 43.1 mph 34.1 mpg (imp) ; 27.3 mpg (US) > Towns at 17.7 mph 26.3 mpg (imp); 21.0 mpg (US) > > A graph of steady speed fuel consumption (multiply by 0.8 for US mpg) has the > following plotted points:- > 25mph > 46 mpg (imp) / 36.8 mpg(US) > 30 > 48 / 38.4 > 40 > 44 / 35.2 > 50 > 42 / 33.6 > 60 > 37 / 29.6 > 70 > 31 / 24.8 > 80 > 22 / 17.6 Wow, this is really interesting. It looks to me like I could blame most of my low mileage on my heavy foot. I suspect that I've let my highway average creep up slowly over the years as my fear of the police has slowly faded away. If I could just keep it down to 65 it looks like things should pick up a LOT! > Weren't we getting over 30 mpg (US) in the hills, Jim, and not much under 30 at > lower altitudes in your '69 AT Square going to Parma? I don't remember it being that high, but I'd have to check the booklet to be sure. That's one of the nice things about keeping a record: It can be checked. I can't rely on my memory for things like this. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org