Suggestion: Hypermiler rating system
 

Under the current system if a person achieves 20% above EPA combined fuel efficiency for the 90-day average, he/she is given a "Hypermiler" rating. That's cool. However, I think it would be even better if there were more categories. For example:

10% above EPA = "Efficient driver"
20% above EPA = "Hypermiler"
50% above EPA = "Hypermiler plus"
75% above EPA = "Super Hypermiler"
100% above EPA = "Ultra Hypermiler"

The numbers and names could change, but you get the idea of what I'm suggesting.

...similarly:

semi-miler
maxi-miler
super-miler
extreme-miler
ultra-miler
hyper-miler

...and:

mini-miler
midi-miler
mogo-miler

It's all well and good, but we know who we are.

Something like this would be fun. I personally like your suggestion of names Old Tele Man. Ultimately ending at the title of Hypermiler would be a privilege. Plus, for those that are below EPA, having a title for that too is a good idea. I might add, perhaps the color could change too. Red for Below EPA and ending with dark green for hypermiler. Course, yellow, a color that would probably come in between the two extremes, might be hard to see on a white background.

Oh, and Extreme-miler and Ultra-miler might need to be switched??? I don't know, when I think of extreme, it's pretty extreme! :)

Okay. How about being able to identify between those of us who only use hypermiling driving techniques, and those of us who modify our vehicles for economy?

I'm liking this idea,

Good idea! None of the modifications I've made on my Mustang have returned anywhere near the FE increase that driving technique modifications and commuting route modifications have returned.

Lazy Miler
Active miler
Hyper miler
Attention Deficite hyperactive miler
Obsessive Compulsive miler

Why not use names which are easier to understand and refine the resolution at the same time?
1%overEPA-miler
2%overEPA-miler
3%overEPA-miler
4%overEPA-miler
5%overEPA-miler
...
10%overEPA-miler
...
20%overEPA-miler
...
58%overEPA-miler
...
100%overEPA-miler
...
etc.

Now for the first decimal:
0.1%overEPA-miler
0.2%overEPA-miler
...
1.7%overEPA-miler
...
:snail: (<- I love this guy)

20% below EPA: Hyper Galloner!