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Haha, that's a nice contrast. A gas guzzler(Lincoln SUV) & a gas sipper(prius).

 

Just signed up a couple weeks ago. Only 39 2012 Prii so far?

 

I just signed up to fuelly. I wish I'd known about it much sooner. I've had my 2012 Prius since the beginning of March and I have been trying to keep track of all my trips to the pump and how many miles I get from each fill-up, however without much success due to short term memory problem

 

I love Fuelly! I used to track via an app on my Android phone but was really pissed off when an upgrade killed my data. Having it on the web makes it so much more awesome as well!

Prius 5 with Adv. Tech. (Toyota Prius) | Fuelly

 

Add one here. Bought last Saturday. First fill up today.

 

Welcome to the LI Prius community. What main roads do you travel? I am on Sunrise Hwy and SSP mainly.

To all, when signing up for fuelly.com at least put the state you live in, if not the town. I am always frustrated when I see certain car's mpgs and can't tell where they are from.

Thanks!

 

I'm North Shore. Make the trek from Nesconset/Smithtown to Great Neck (35 miles each way) 6 days a week. L.I.E or Northern, straight shot. Once I get my clean pass tags (expecting them this week) I'll be L.I.E. all the way. Can't wait to finally ride that HOV, my kids will appreciate me getting home sooner too.

 

One thing I forgot to mention is that fuelly will not give you stats for your first tank of gas. That is because they feel that it is questionable whether the dealer filled up the tank all the way. Always fill to the first click for the best accuracy.

I go 35 mi from Medford to Bethpage. Yours is definitely a tougher commute especially west of Rte 135.

I am also getting my clean pass tags. It was a PITA because every time I called a recording came on to say to call back later or go online. But as you know, you have to call Albany to get them, not go online. Finally got through last Wednesday!

 

I just had my first fill up!! I updated my Fuelly account right at the pump. I logged 514 miles (my beginning miles was 1 as of 3/31/2012 when I bought my car) gas price was $3.92, and I filled up 9.86 gallons. I am surprised it clicked because when I got to the tank, my "cruising range" was showing only 7 miles remaining. I didn't expect the pump to click at only 9.86 gallons but I guess Toyota warns you you're running out of gas 2 gallons ahead of time.

Anyways, my first official Fuelly avg MPG is 52.1! My Prius actually told me I was only getting 51.1 mpg and I have never resetted my odometer or trips yet. So is it normal that my Prius is understated? I know it's not a lot of data to go on since it's only been one fillup, but was this unusual?

 

I track my mileage on fuelly (Buster (Toyota Prius) | Fuelly) and the Gas Cubby app on my phone. I usually calculated the mileage on my Jeep, but never tracked it. The Prius is more fun to track ;-)

 

@jsfabb, strangely enough, got my clean pass stickers today! What a relief. I got through last Thursday so you should have yours any day now, if not today.

 

I have an account on Fuelly ... BUT anyone knows how to account for the difference of the SUM of mileage per tank and what the odometer says ...

This is a real drawback .... I have over 35000 miles and about 32 mile btw the fuelly sum and the real odometer .... (75 fillup) no this is not the first tank.... issue

My own spreadsheet always compute the all time average by using the "current" odometer mile and adds up the tanks (not adding up the sub-distances). Anyone with little math can tell you the average error is 1/10 of a mile on each reading but it seems it does NOT average out .... but growing ...

Any suggestion?? Anyone noticed this ???

I zero out the Trip A ... for the tank...

My theory is that Trip A only turns at 12.59999 so I am throwing out 0.05 on average which correspond with the error .... so Fuelly is out of sync everytime I add a tank ....

 

Testing to see if my Fuelly banner comes through....

 

I got mine and put them on this morning before I left for work. I know it's a holiday week and the traffic was lighter, but what a pleasure traveling into work today in the HOV lane. I will try it going home tonight. Let's see what next week brings when the traffic comes back full force!

 

Not sure what you mean by "about 32 mile btw the fuelly sum and the real odometer".

Say your Trip A odometer reads 486.2 miles when you fill up and then you reset it to zero. The "actual" distance travelled for trip A might have been 486.20 or 486.21 or 486.22 or... 486.29. When you reset it to zero you have ignored that .00 or .01 or .02 ... miles travelled. Hence, on average, you are tossing out .045 miles each time you reset to zero. Over 75 fillups that would amount to only 3.4 miles. Presumably, the difference you are talking about is larger than this. However, you do say that "I am throwing out 0.05 on average which corresponds with the error".

 

Testing!

 

Well the average IS 0.05 you need to use 0.0999999999 not 0.090 you can think of it better on a axis as the distance correspond the possible errors (basically a continum) with your example 486.20 all the way 486.299999999 the distance is 0.09999999999999 and half of that is actully 0.05

But on the other hand you right max additional error is 75x0.05 = 0.375 so much for my first quick theory

In that case the error comes from somewhere else ... I had similar issue to calibrate my ScanGauge .... buy the way ...

I checked my original spreadsheet which calculates trip's mpg full mpg and average mpg (calculates errors as well). I always write done the odometer and trip mileage .... (adding the trip gives more or less the same 32 so )

Either toyota's computer is doing something funny or reads/interprets the data differently for the two counter .... again I had similar issue with scangauge

 

Do I have to update my signature everytime I update Fuelly? I've already had my second fill-up and on my Fuelly profile it shows my current MPGs but my signature bar still shows "0.0"

 

Just signed up. Glad to be part of it.

 

Short commuting test...

My best mpg's so far! 53.9mpg!

Details: The Grey Ghost (Toyota Prius) | Fuelly