When is a status level assigned?

Discussion in 'Start Your Journey Here' started by mauidan, Nov 23, 2007.

  1. AlphabetBackward

    AlphabetBackward ZYXWVUTSRQPONMLKJIHGFEDCB and A

    Regardless, I think the important thing is to save gas and increase your mileage. Just because you're an expert doesn't mean you're a better hypermiler than one that is skilled or one without any title.

    Some people aren't doing all the methods either because it could damage the car or simply because they aren't comfortable with it and that's fine. Maybe your commute has tons of hills or it's completely flat.

    No one here thinks less of anyone (or they shouldn't...) just because you're not an expert or your percentages are lower.

    Just my two cents.
     
  2. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    No problem, Paul. I knew I would be inheriting a bit of work when I took over the Administrator role for this site -- I'll get it worked through.

    I want to double check a couple of other vehicles to make sure I have the correct relationship figured out but yes -- the goal is to have the actual number thresholds for any vehicle be the same regardless of rating system.

    Larry, this doesn't seem to be related to the 50/50 split -- but thanks! :)

    AlphabetBackward, you are of course completely correct but the computation behind the scenes is not functioning as intended.
     
  3. cmoney99

    cmoney99 Member

    Isn't being here and trying your best what it's really all about?

    Heck, for most people just equaling the EPA estimate is an accomplishment.
     
  4. xcel

    xcel PZEV, there's nothing like it :) Staff Member

    Hi Paul:

    ___The 05 Accord I4 w/ Auto has a 50/50 split of 29 mpg combined on the pre-08 rating vs. 26 on the 08 EPA due to the change in EPA specs alone. I wanted to set an even number target to account for the new EPA change and not the vehicles because the vehicles in so many cases did not change.

    Pre-08 at 100, 125 and 150 for the status’.
    08 and later at 120, 150 and 180 for the same.

    ___It was to make it tougher, not easier as Elite is one hell of a lot of work no matter what car you own as it should be. The Accord would still be Elite on the new CleanMPG 08 criteria but it would be a little closer is all.

    ___For the Fit, you only need a 55.8 lmpg. For you, Paul and Shan, this should still be doable?

    ___Finally, I ma just about to go after changing everyone to the new 08 specs and we will all be in the same boat in short order.

    ___Good Luck

    ___Wayne
     
  5. diamondlarry

    diamondlarry Super MPG Man/god :D

    Wayne, would you like me to change my stats to the '08 now? Since I'm doing the 3-month run I already have those numbers available.
     
  6. fixedintime

    fixedintime Well-Known Member

    Wayne, since you are going to rework the system I'll throw out a couple of thoughts. Take them or leave them as you see fit. In the end, no matter how you structure the system, what the cutoffs are becomes an arbitrary decision.

    My best system would make it relatively easy for someone who does the basics to get to the skilled status, someone who works at it makes expert and very few make it to the elite status.

    1. The 50/50 split vs the 45/55 split. The difference is so small in the end I would just stick with the EPA - easier to explain, no one get caught that we use a different metric, plus it is hard to justify one over the other unless you know each persons driving situation - and we don't want to get into adjusting for that.

    2. Under the 2008 system a 20% increase moves you from skilled to expert then on to elite. Under the pre-2008 system a 25% increase move you from skilled to expert and then a 20% increase moves you from expert to elite. That is really not a consistent system. But perhaps works in the interim.

    3. I would like to see some thought given to what the cutoffs should be along two lines. It seems the system could be structured in terms of percent increases in fuel efficiency. That is the way it is now. Alternately it could be structured in terms of difficulty. I would prefer the second method, but developing a metric for it is more difficult.

    What I would like to see is something that said that say 10% of the long term members make it to expert, 30% make it to elite, and 60% make it to skilled and structure the cutoffs to fit those numbers. The percents I used are totally arbitrary and could easily be changed. Under such a scheme I would expect the percentage cutoffs to fall something like 125%, 150% and 175%. That way the percent increase would fall at 25%, 20%, and 17%. The downward trend in the percentages needed reflect the increasing difficulty in making further improvements. Again my percentages are arbitrary - you could use 120%, 140% and 160% and get the same effect.
     
  7. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Paul, our database has large number of vehicles through 2006 ready to offer when you enter a vehicle. The fields are actually user modifiable though, and I need to figure out how to update the database so people are less likely to have to run over to http://fueleconomy.gov to find out what their ratings are.
     
  8. Damionk

    Damionk DWL Lover

    I have noticed Sean that the status seems to be related to how many miles are on the car. Both the cars in my garage have less than 2000 miles logged yet I still have expert status.
     
  9. Ophbalance

    Ophbalance Administrator Staff Member

    If you go into the mileage log, there's a column on the left most side. It's here that, after 5000 miles, you're status will show up. Yes, it's in the graphic, but it won't be in this column until you hit the mileage stated previously.
     
  10. Damionk

    Damionk DWL Lover

    Oh, OK. I guess I misunderstood or something. I thought everyone was referring to that graphic.
     
  11. fixedintime

    fixedintime Well-Known Member

    Don't feel bad, it took me a while to figure out what status they were refering to.
     
  12. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Paul, I still need to verify the ratio I determined for the Fit works for all other vehicles as well. The correction factor currently in use may be a compromise.
     
  13. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Paul, for your car it works out 1.145 but the built in adjustment factor for the site is 1.2.

    To clarify, remember that the combined rating for CleanMPG garage vehicles is calculated at 50% city and 50% hwy. Using the numbers for '08, your car comes in at 31mpg for combined. Using the '07 ratings for your car results in 35.5mpg. In order to deal with the new numbers, an adjustment factor is introduced for the new combined rating so that the same percentages can be used for the rating system. The problem is, 31*1.2 = 37.2 instead of 35.5 when this is done.

    So the verifying I need to do is comparison of other vehicles to see what the ratio is.

    For my two cars, I get 1.206 for the Insight and 1.137 for the Elantra. As you can see, there isn't a strong correlation here.

    This will probably be a moot point soon as we've (moderators) already been discussing simply moving everyone in the logs to the '08 ratings. Since we already have 2030 vehicles it is a daunting task but everyone will then be on the same footing without conversion factor silliness.
     
  14. diamondlarry

    diamondlarry Super MPG Man/god :D

    Sean, would you like me to switch to the '08 numbers now? If I did, there would only be 2029 cars for you to change later?:D
     
  15. rweatherford

    rweatherford Times my Mileage by Six

    Let's just switch so some are happy. Heck I think I'll go up to 133%...... :p
     
    Last edited: Sep 14, 2008
  16. TracyJean

    TracyJean Well-Known Member

    My 2008 Hyundai Accent also does not meet the 1.2 adjustment factor. 2007 ratings were 28/37, 32.5 combined. 2008 ratings are 24/33, 28.5 combined. 28.5X1.2 = 34.2. The adjustment factor for the Hyundai between the 07 and 08 model is actually 1.140.
     
  17. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Paul, I set it back.

    Everyone in the 3mo challenge is using '08 numbers.
     
  18. lnmcmahan

    lnmcmahan Econoclast

    I'm pulling for you to beat my 66, what with that cool FAS switch and all!

    Larry
     
  19. Right Lane Cruiser

    Right Lane Cruiser Penguin of Notagascar

    Paul, maybe you didn't understand me. Everyone in the 3mo challenge is using '08 specs -- no exceptions because we compare percentage over EPA. In this case the "rating" you receive doesn't matter... just the raw numbers.
     
  20. diamondlarry

    diamondlarry Super MPG Man/god :D

    It's because with the '08 numbers you need a higher mpg level to reach the same skill level.

    Speaking of that, I changed LaForge to '08 numbers but it is showing I'm Elite. Sean, should I change them back?
     

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