2010 MPG Stats - Post Them Here

It seems a little low but not to the extreme. Only you know how you drive and what the traffic following you is doing. I got mine on 3/8/2010 and consistently am getting 52-55. I drive 26 miles one way to work in a mixed highway/surface street environment. I try to pulse and glide as much as possible but the temperature here has dropped into the lower 40's at night which doesn't seem to be conducive to optimum mileage. We've also had a good deal of rain lately which necessitates the use of the defogger.

If you set Trip A when you fill up the tank and leave it alone until the next fill-up, there's going to be a difference in MPG if you calculate it manually. That's the error to which he is referring.

 

Thanks Jdk. I still need to learn how to drive the car optimally pulse and glide is that where you accelerate past the middle line then glide towardstje left hand part of the bar ?also lately I have been doing some serious highway seivig so that may be skewing it too.

 

Our "official winter" with compulsory winter tires has finished:
average consumption over 6814km - 4260mi is 5,75l/100km - 41MPG. I had 17" Continental WinterContact TS 830 tires. Highway speed limit here is 130kph/80mph.

 

I drove 25,491 miles in 2009, using 497.77 gallons of gas, for an MPG of 51.2 on my 2008 Prius. I drive in and around Chicago; some highway, some city, snow, rain. It's great. I average about 48 MPH in the winter and 54 in the spring and fall. I love it.

 

I guess with my new fuelly i don't really ned to say much. Fuelly has tracked the car for every mile on the car, for a total over 14,500 so far.

 

on my 2010, i am getting 5 cents a mile, nearly 54 mpg LT average, BUT

i just rolled 8,000 miles but also rolled $400 in gas. that seemed like a lot (jaded i guess) which would not be such a big deal, but i also rolled 10,000 miles on my Zenn and realized that this 2010 is costing me a fortune to drive.

now, i have done "nearly" everything i could to boost the cos of operation of the Zenn.

i track the electricity i buy to move the car and even add in the taxes and basic connection charge (which i would pay whether i charged my Zenn or not, so not a "real"
Zenn cost) and even then, its just not adding up!!!

now, granted i plug in at work and various other spots around town free of charge, but that really does not add up to much (estimated work charge, less than 10 cents a day)

 

After 750ish km my average is 5.0 l/100 km. Last night I went for a 170 km a trip and did some P&G and here are my results:



Very happy so far, temperatures were about 0 - 3 °C. I expect it get better as soon the car breaks in and as soon temperatures rise. The day I got the car delivered temperatures were around 10 - 15 °C and I could get 4.5 l/100 km with no effort, whereas I had to P&G hard to achieve that 4.4 l/100 km, so temperatures play indeed a big role in fuel consumption, so to those who are somewhat unsatisfied with they mileage, I just say have some more patience, spring is coming!

 

I have driven my car for about 13000 miles and I have recorded every time I have filled up with the date and the price per gallon in an excel spreadsheet. I have gotten an average of 43.1 MPG since I bought the car in November. I have attached a copy of the spreadsheet for your information.

 

Traded-in my 2007 Prius for a brand new 2010 package III on March 7th... Yesterday I filled up after 572 miles, with an average of 57.8 mpg! Not bad for winter fuel and very little hypermiling! Can't wait see what kind of mileage I can get hypermiling in the summer with a few tanks under my belt! Crazy thing is that when I filled up yesterday, I squeezed 12.44 gallons in! Shooting for 700+ miles on this tank! My previous record in my old 2007 prius was 58.7 mpg with 640 miles on the tank in the summer... Pumped!!! I bought a package III b/c I heard that packages 4, 5, & 6 would get less mpg's due to their 17" rims, heavier glass roofs, as well as the heated seats! This true??

 

weight differences are pretty minor due to package restrictions (official word and NOT my opinion) only AT package has 17" wheels. has been some discussion as to how much weight the sunroof in package 4 adds, but i dont think its significant.

 

So I am trying to summarize this thread and others in my head. Seniors pls assist, as I am new prius owner. After car engineering which is the obvious, most important factor, in order of magnitude of impact on MPG, I am coming to this rank ordering: 1) driver technique (good vs poor, most important variable); 2) external temperature and engine temperature (warm better than cold, grill blocking in cold weather); 3) Speed, slower is generally better; 4) length of trip, longer is better; 5) new car vs. broken in, broken in better; 6) geography--flat terrain better than hilly; 7) dry, calm weather conditions better; 8) tire pressure at recommended max better; 9) weight with passengers/cargo, light obviously better; 10) fuel 87 octane normally better. What's your take on top ten factors affecting MPG? What's your rank order? If we can isolate top 3, 5 or 10 factors most contributing to the variance in MPG, we will all know better how to improve. Thanks.--Steve

 

Model III with Solar roof. Have driven just over 10,000 miles since buying the car last August. 70-75% highway mileage at about 60 mph, remainder on stop and go city streets at 25 mph. Have averaged 52.1 mpg over those 10K miles. The car's estimate is 55.0 mpg so that's a good 5% overestimate. Not surprisingly cold weather (~40F, well that's cold for us) and wind decreased mileage during the winter months to about 50 mpg. Mileage coming back up now with warmer spring weather, 54 for the last tank of gas.

 

Nothing like 'topping off' the half-full tank for under $20 after coming home from a round trip of putting 364 miles on the car and doing some miscellaneous errands at almost 65MPG (3.62 L/100km).

My 'normal' driving is about 50% freeway (or 75% roads with few stops), with occasional mountain driving. It will snow in hell before it snows here.

The car seems to get reasonably better mileage on freeway driving than in town, as measured at the pump. I went about 60MPH on that trip to LA and back. So long as you're not addicted to 'keeping up' (keep right, watch the onramps instead) and maintain a generous following distance when they're too slow for you, you can get stunning mileage out of this car. (NO, I do NOT 'draft'). I think the 'new' EPA/CAFE mileage standards are for idiots who drive at full speed to red lights and race on the freeways while tailgating (you know, MOST drivers).

Overall so far: 59.28 MPG (3.97 L/100km) or $0.0492/mile.

Here's the 'google documents' version of the spreadsheet that I use. You can 'Download as' and save it to your hard disk to see the formulas and customize it, if you want to. I've been using the spreadsheet for years, but just recently touched it up (so maybe added a bug or two). If you don't have spreadsheet software, you can either make a google account to have google documents, or download openoffice.org free (fully functional, fully free).
Prius Mileage

The spreadsheet is naturally using the 'English' system natively, but it produces 'L/100km' as an afterthought (L/100km=235.214583/[MPG]) for our international friends. It tracks all kinds of goodies, and keeps tank, average of the last three tanks, average of last six, and overall mileage since I started keeping track, so I can keep track of various 'trends' in my fuel consumption. After the 6th row, just copy/paste the last empty row to however many more empty rows you want, to add more tanks. I tend to add notes if there's something 'different' about a tank.

When I fill up a car, I get a receipt for gas and write the 'main' odometer down on it. Then I bring that home and type date/odometer/fuel/price into the spreadsheet with all of the decimal places I have on the receipt. I compare what I paid on the receipt with the calculated 'Cost', and it should be the same (or I typed something wrong). So all of the 'errors' average out over a few tanks, and I can get a better idea what I'm really getting.

There are cases where I don't fill up. If I have to get gas 'in the middle of nowhere' (with an extra high price - I'm actually around 'nowhere' a lot), then I just get what I need to go elsewhere and combine the tanks/mileage. Same if I'm short of cash and they can't take plastic of some sort.

 

I just got 470 miles on 8.2 gallons. Display read 56.4. Why do I frequently get better mileage calculated that displayed? Isn't it usually the opposite? Either way, helluva tank!

 

Here's my stats to date:

 

Fillup on 3/27/09 58 mpr calculated, the weather in Wisconsin is getting warmer. At 9920 Cumulative mpg at 50.8 calculated. My mpg display is consistant at overestimating by 2 mpg.
Tony Renier

 

Sixth tank. 43.0MPG(Calculated) 44.1MPG Indicated. Warmer weather equals better mileage. Go Figure.

 

Got my base model 2010 Prius (Canadian) ten days ago, after 9 years of driving a 2001 VW Jetta TDI.

Today was the first chance I had to check Prius' fuel economy, so I set "trip A" to zero and toured around metro Halifax for about 2 hours. I didn't travel over the posted speed limits, but didn't hold up traffic either.

When I pulled into the driveway I had covered 67Km and the fuel economy displayed was 3.5L/100km (about 81mpg - that's per imperial gallon).

Wonder what the car will deliver when the engine is broken in?

 

warm weather and with my almost 80% electric drive to work..57+ mpg this tank. woohoo

 

52.13 MPG average calculated

from 146.7 miles driving, 2.814 gallons refill 87 pump octane

Computer MPG's - ~ 54.x MPG

This is the 4th rental car, all have been over 50 MPGs average!

Conditions -

Normal driving with flow of traffic, no special hypermiler techniques (I don't practice them).

2010 Prius III w/nav driven from ~10 miles on ODO to ~ 155 miles (brand new car)
Mostly continuous driving, mix of suburban SF Bay Area city, freeway and smooth backroads, a few 2 mile trips. Mostly single occupant, some steep hills and grades.

37psi front tires / 35 psi rear
Outside air temp range 43F - 56F

No A/C, little use of cabin heater
half time in Power Mode / half in normal mode