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My onboard computer said I got 23.1 mpg on my recent 345 mile trip. I just filled up, I stuffed the tank before and on the refill. With 13.8 gallons on the refill, I calculate 25mpg. More in line with what I thought it should get. I think the avg. speed was 61.<p>So, instead of thinking I'm getting 17mpg around town I might actually might be getting a little better.<p>the onboard computer on our '99 GLT is much more accurate. Anyone have any insight into these onboard computers?<p>
 

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Re: Inconsistent MPG readings on computer (83caddy16v)

There was this dicussion on the C70 forum. I really don't think it's all that accurate b/c from this weekend's trip, I got some outrageous 27.2 mpg while from my calculation, it was no more than 21 mpg. So I think it's definitely off. Just look at the section where it tells you how many more miles you have left with your current tank of gas.....it's not even remotely close to what it should be. I have 2 gallons left the most, and I don't think I can pull a 115 miles from that.
 

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Re: Inconsistent MPG readings on computer (The_one_n_only)

Kai, you should have done much better than that if you were averaging 60mph. <IMG NAME="icon" SRC="http://********************/smile/emwink.gif" BORDER="0">
 
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