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Old 10-10-2007, 07:31 PM
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bwilson4web bwilson4web is offline
Engineering first
 
Real Name: Bob
Location: Huntsville, AL
Hybrids: Prius Classic 03
Posts: 5,040
Wink Re: Hypermiler Star?

Quote:
Originally Posted by gpb5200 View Post
Why is it that some cars with less mpg than mine (53.7) have hypermiler stars and mine doesn't?
You are "Lola"? I notice you have your "City/Highway" set to 50/50%, the vehicle default. This means you need to exceed:

26 = 50% * 52 MPG
30 = 50% * 60 MPG
---
56 MPG vs. 53.7 MPG

Now if your ratio of City/Highway should change, which is something you set in your vehicle profile, say 80/20 percent, you might instantly get your star.

53.7 = (n)*52 + (1-n)*60
53.7 = 52n + 60 - 60n
-6.3 = 52n - 60n
-6.3 = -8n
.7875 = n

79% = highway, 52 MPG
21% = city, 60 MPG

Rounding to make the math easy:

80%*52 + 20%*60 =
41.6 + 12.0 =
53.6 MPG < 53.7 MPG (your number)

Quote:
Originally Posted by gpb5200 View Post
I already have over 12k miles, so I easily meet the 3k requirement. I feel like a disgruntled kindergarten kid, but by golly, I want my star!
I suspect you took the default, 50/50%, instead of something reflective of your actual City mileage / 12k miles verus Highway mileage / 12k miles. The reason I know this is I was on the way to getting my 'star' at 3,000 miles when I realized that my first tank, 290 miles @39 MPG, was all that kept me from getting it.

When I asked if my first tank could be excused, the answer was "Oh NOOOOO! Every tank is important and must be recorded." And then I realized that something else what going on . . .

I do endorse and recommend that you correct your actual highway miles versus city miles since with 12k miles, you finally have a better feel for how it breaks down. As for getting your star,
YOU HAVE ONE IN MY EYES ALREADY!
IMHO, the people who deserve a star are those who continue to enter their tanks. The people who deserve a dark entry, not the gray, are those who do more than six tanks and have made an entry in the past six months. Everyone else, at most, can have a gray entry and if less than six tanks, a very light gray entry. The reason is, we should reward those who support Greenhybrid.com and the maintenance of our database.

Let others go for ego tripping numbers but we all know it is the 'luck of the draw.' Some folks just live in hybrid hostile areas yet in spite of their low mileage, they continue to track their efforts. The selfless commitment of these people who have no chance of a mileage based "star" are making a real contribution to our knowledge and understanding. They deserve recognition for their loyalty, persistence and honesty!

Had I lived less than three miles from work, there is no way I could have ever achieved my 'star.' Yet it didn't take long to realize that mileage tagged 'star' is the wrong goal.

If it were my choice, this web site would recognize:
  • star + bold - any entry in the last month after the 6th tank
  • bold - any entry in the last month
  • dark gray - any entry after 6th tank
  • light gray - any entry over 6 months old less than 6 tanks
Bob Wilson

ps. You still have a "STAR" in my eyes!

.

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Last edited by bwilson4web; 10-10-2007 at 07:46 PM.
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