Re: [T3] Wacky Mileage

[Jim Adney <jadney@vwtype3.org>]

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
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