State By State Average MPG

Southern California
Mileage (per Fuelly)
Sept. 46.9
Oct. 45.4

 

Missouri

Mileage: 5948635436524 mpg

 

I agree with Evan, "no hypermiling" is too vague since hypermiling actually just means "beating the EPA". If you mean "don't post if you make compromises on journey time or comfort or use special driving techniques to improve mpg" then yes, I'm out, but the problem is you're automatically going to exclude more people who drive economically since people who value fuel economy are liable to make more compromises. After all, we bought a Prius.

 

TN 2005 Prius Yokohama AVID ENVigor I'll just round to the nearest 5 MPG by month as I don't track my MPG and have to go by memory

Oct 55 (cold enough that I went from AC to heat, started looking into grill blocking, realized my tires needed 5 PSI added)
Sep 60 (lack of AC use meant I was higher here than Summer but I'm rounding down as it wasn't much over 60)
Aug 60
Jul 60 (heavy AC use cost me 1 or 2 MPG but I'm rounding up here)
Jun 60

I'm not sure about the other months I guess I'd have to come back and update as we work through winter and spring assuming the cars usage patterns don't change.

I don't hypermile in driving style (too much traffic, tailgating, I'd get T-boned crossing streets and intersections if I don't get out of the way quick enough).

My "mods" are all under $10 at this point. A $4 antenna and a $1 pipe insulation plus the tax and gas spent going to get them. I doubt they are affecting the MPG much.

I do buy 100% gas cheapest grade. No ethanol. I don't do any additives like fuel cleaners and I don't use a special oil. I just let the dealer change my oil.

I run my tires at 48 PSI front, 45 PSI rear (51 PSI is the sidewall max) +- any change in temp (I air up in the garage usually in the 70s in the summer and the 50s or 60s in the winter tire pressure drops roughly 1 PSI for 10 degrees F so my pressure might be noticeably lower on a cold winter day.). I don't consider this hypermiling. I don't have LRR tires and I don't ride at sidewall max or above like full fledged hypermilers do.

 

Other fuel efficiency factors that you did not include are the mix of city/highway driving, AC/heater usage, outside temperatures, and the length of the average trip/miles, top speed travelled, and the use of 100% gasoline has a significant impact on fuel efficiency.

For example, if all same condition are the same, the car using E10 will get about 7% less MPG than a car using 100% gasoline.

If all the conditions are the same except that one car is being driving for most of its miles at a top speed of 75 mph while the other car is driving most of its miles at a top speed of 55 mph (on the same highway for the same distances/approximate times(temperatures)/directions/miles per month) - then the 55mph-car should get over 20% better MPGs than the 75mph-car for that month.

With respects to items you'll like to exclude - a you need a list of no-nos. Please check which of the following below items you'll like to exclude ...

hypermiling Techniques/mods(1)
=======================
[ ] Grill Blocking
[ ] overinflated Tire Pressure
[ ] OBDII System sensor/ Scangauge
(Monitoring of the Coolant/GPH/RPM/TPS/IGN)
[ ] NICE - neutral downshift on downhill grades
[ ] Steath Warp (SW), see (3)
[ ] Driving with Load (DWL)
[ ] Driving without brakes (DWB )
[ ] Ridge Riding
[ ] Potential Parking
[ ] Face-Out
[ ] Rabbit Timing
[ ] Alternate Routes
[ ] Pulse and Glide (P&G)
[ ] High Speed P&G
[ ] Warm-up P&G
[ ] Super Highway Mode(SHM), requires a ScangaugeII
to monitor TPS and the IGN(2,3)
[ ] cruise control (cc)
[ ] drafting
[ ] side drafting


(1) Beating the EPA - The Why’s and How to Hypermile - CleanMPG Forums
(2) New Prius - "Super Highway Mode" Technique (SHM). - CleanMPG Forums
(3) 2010 Prius-III P&G, SHM and WS FE techniques rehashed, defined and refined - CleanMPG Forums

Grades of gas
===========
[ ] 100% gasoline 87 oct
[ ] 10% ethanol gasoline mix 87 oct
[ ] 15% ethanol gasoline mix 87 oct
[ ] plus gasoline grade 89 oct
[ ] premium gasoline 91 oct
[ ] subgrade gasoline 86 oct (Sunoco)

 

Just look on fuelly.com and it will answer your questions.

 

Averaging ~48MPG over 2 years, 3 months. I calculate when I fill up, but I don't do a monthly average. No mods, just stock.

 

I have not went below 50 MPG yet in just over 9 months and 15,5xx miles. Average is around 53.25 MPG.
Somewhat normal driving habits no mods.

 

Is there a particular state you are looking for? California has wildly different climates, terrain, driving conditions to make numbers meaningless. I'm sure most other states have their issues as well.

I'd recommend going to Fuelly.com as well. At least you can look and compare the 2011 Prius vs the 2010 Prius. Most of the 2011 have been driven in weather that is condusive for good gas mileage, whereas the 2010 have seen a full winter (or two). It will give you a good idea what "average" summer driving might be to "average" yearround driving.

If you have a state and area in mind (Say St. Paul Minnesota, or Topeka Kansas) ask about specific locales, so that drivers in that area could respond to you.

 

First tank in Minneapolis. Cold in October so no A/C, only heat. approx 52 mpg

 

Northern Michigan --

Summer: 56 mpg
Winter: 43 mpg

We don't have limited access divided highways around here, so these figures are for 55 mph or less. When I do get to drive on a highway, I go 70 mph and generally average mileage in the mid forties.

I recently completed a 1,500 mile round trip to eastern Kentucky in 70 degree weather. We averaged 51.7 mpg for the entire trip.

Tom

 

south florida
2011
-April 49.75 (bought car 4/28/2011)
-May 48.22
-June 47.44
-July 45.35
-August 45.58
-September 48.69
-October 49.05 (so far)

how'd he do that? Road Trip - darrensoft.ca

all figures are calculated, we quit filling when the filler clicks off the first time, AC at auto & very cold mostly, drive-it-like-you-stole-it SoFla best-defense-is-a-good-offense driving style, regular gas from shell or exxon-mobil mostly, sometimes totin' canoe and/or kayak on roof and bikes on bike rack in receiver hitch on back (serious mpg hit, but hey we went and played outside).

 

Northwest Oregon
MPG is Calculated by miles divided by gal's used;
Sep. 53 MPG
Oct. 51 MPG

September mostly highway
Oct. mixed, even back unpaved roads deer hunting

Gas, is Reg. with 10% Ethanol

I believe highway driving at moderate speeds 45-55 mph
will give you the best mpg. Its is easy to get 60 mpg at those
speeds in summer with dry roads.

alfon

 

OK Figure This out New York Here
I get 56 MPG (07 Prius) no tricks other than doing the speed limit and driving like I have no brakes.
My other half (10 Prius) 47 MPG Lead Foot and Heavy Brake User.

So the State doesn't matter, it's the driving style.

 

SHOW ME

 

I nearly always get at least 5 mpg more than when my wife
drives.

al

 

I've gotten up to 56 mpg city/hwy in southern Cali... the last few tanks I'm at 50 mpg and that's driving pretty normal, even passing folks on the freeway. It really is all in how you drive.

 

Or for me it's a function of when I leave for work. If I leave at 6am, I get 43 mpg. If I leave at 8am, I get 50 mpg.

Why? Because at 6am, the freeways are clear and I can go 75 mph. But at 8am, they are very crowded and I run around 55 mph in the carpool lane. So get more sleep and use less fuel, sounds like a win-win proposition for leaving for work at 8am!