2010 MPG Stats - Post Them Here

well i have always posted stats (still have the 2004 mileage spreadsheet!!) and you can use mine as a guideline but i will say, different drivers will cause different stats. my SO who is the SPM driver and has been the daily commuter since Nov 07 when i started driving the Zenn. but overall, she is getting probably about a mile less per gallon then i think i would get. right now she is at around 54 mpg

wow... does that mean i am an "elite?"... actually i post my stats only to illustrate what you can get by not hypermiling and just driving sensibly... for one thing, i am a bit lazy, so i use CC about 90% of the time, including driving around town. i get the beter mileage by choosing routes with less stops, driving the speed limit and anticipating flow of traffic. i dont pulse and glide (it takes too much concentration and although i will do it occasionally if i am alone, i never do it with someone else in the car... guess i cant "glide and chew gum" at the same time)

something that has been tried a few times, no experience with the 2010 yet, but in the classics, you are looking at ½ to maybe as much as 1½ mpg difference. the variance simply has to do with what the OAT is and your A/C setting

 

Thats great! CC on and AC on low 50's. How far did you go?

 

Level Highway Mileage

With the new organization of forums, our Prius III, straight off the dealer lot:

Test protocol: two runs in opposite directions averaged, temp: 82-84F, wind 15-20 mph steady; speed cruise control maintained and GPS validated; distance: 7-15 miles per run; mileage trip meter reset after GPS validated speed. (*) Temp: 62F, wind 15 mph steady, defroster on by accident.

6% Grade, Hill Climb Speed

I also ran a series of hill climb tests to compare with our 2,700 lb, 2003 Prius versus the 3,000 lb. 2010 Prius:

• 55 mph - .0725 gal. (2003 Prius, 2,700 lbs, straight gas)
• 55 mph - .0675 gal. (2010 Prius, 3,040 lbs. E10)

The 2010 has at least 6.9% better performance.

6% Grade, Maximum Sustained Speed



This also shows up as extra power when climbing a hill:

• 60-65 mph - gas-only 2003 Prius hill climb speed
• 80-85 mph - gas-only 2010 Prius hill climb speed

FLASHING PIP DISTANCE

To purge the tank, I ran until the first error indication, "Electronic Steering Fault:"

122 miles @56 MPG ~2.1 gallons
Owner's manual reports ~1.6 gallons
​

FIRST TANK ENDURANCE

No effort was made to extend the range since this tank also include all test runs such as the highway and hill climb testing. No modifications to the vehicle as handed over by the dealer:

580.1 miles, 52 MPG
​

I subsequently found:

40/39 psi - front tires
35/35 psi - rear tires (44 psi max cold pressure)
+0.25 in. over filled engine oil (will correct)
​

Bob Wilson

 

wow, 2 gallons of reserve... interesting. Bob you did not by chance check your "miles to empty" reading?

 

What purpose does the Gen-III's Eco mode accomplish on A/C...and how does it differ from non-Eco?

BTW...you post great pictures and have a wonderful family. Do you still fly? I am retired Air Force (C-130, others) and owned an Archer for years until a couple of years ago.

Thanks,

 

FWIW:
Trip 1: 446.6 miles from Chicago to Memphis, A/C normal mode. Mostly highway 65-80 depending on flow of traffic. MPG 446.6/8.689 gal (for the first refill) = 51.4MPG. I'm unsure if the take was completely FULL and the car was reporting 48.7MPG

Trip 2: First full week of my daily commute to/from work. Distance is 9.3miles one way. The speed limit is 50 for 3 miles, 40 for 2, then 35 for 3 and 45 for 1. There are 16 traffic lights so I'd say it's stop and go especially at rush hour it's a 40 to 45 minute commute. That said, I now leave it in Eco mode and averaged 62.4 MPG for 171 miles. The morning commute was a lot friendlier to the MPG and then the PM commute would kill some of my gains due to the flow of traffic and having to get up to speed from light to light.

I accidentally reset Trip 2 and thus the PM leg of my journey for Friday plus my trips tot he gym are on Trip 3. I will reset when I fill up next but the MPG is showing 53. The Gym is 1.5 miles away.

Of note: The car gets home with 70-80 SOC, but when I get back in the next AM, it's down to like 4 or 3 ... what's up with that? How I wish it had a plug in for the traction battery, as I have all sorts of opportunity for electric only

 

Just finished my first full week and full tank. Unfortunately, the weather wasn't normal. 48 F degrees isn't what I was looking forward to driving in.

The result of those 512 miles was 56 MPG.
.

 

What kind of mileage were you getting with your old Prius when you drove those roues?

 

There's quite a bit of data available on my website, including detailed spreadsheets. Here's a quick summary of last year...



.

 

So it looks like you're getting a good 10-20% improvement in mileage....interesting

 

Using cruise control at 25 mph on a circular loop at 75F:

This includes starting and returning home with 10 miles on the circular loop:

11.9 (gal) * 87.7 MPG = 1,043 miles
​

Hold it for 40 hours or say 8 days of ~5 hour sessions, getting a 1,000 mile tank should be the norm, not the exception.

Bob Wilson

 

the 80 mpg i dont doubt... getting a usable 11.9 gallons, i really have to question

 

That was 87.7 MPG and it was still going up as I continued turning laps. I'm pretty sure the steady-state, 25 mph mileage is pretty close to 90 MPG. Warm-up is better but it ain't free.

After running the tank dry (or the first error indicator,) I was able to put 12 gallons in the tank. I'm pretty sure we can get almost all of that gas out of the tank.

Seriously, there should be a bunch of 1,000 mile tanks by September. Just wish I had the time to spend driving in circles.

Bob Wilson

 

very true very true. i am kinda anxious to get into a situation where i can really boost my mileage. no real opportunities to get into a good driving mode for high mileage sessions other than a few jogs here and there.

commuting to work simply too short to excel. can still do 60 mpg pretty easily even in less than stellar weather. last week it was in the 90's, now its back to the low 60's... oh well, today was comfortable.

 

The problem with mileage records are they are artificial and I would rather send a robot to do the laps. I want to know the vehicle MPG vs MPH but after that there are more interesting problems to solve.

Bob Wilson

 

Bob,

You seriously drove around in loops for an hour at 25mph?

 

he wouldnt be the first to do so to boost mileage. have been a lot of people detailing how they circled a parking lot or a desolate country road at crawl speed just to get an extra mile per gallon on their final tank #'s.

at least he is doing it just to get a baseline for performance guidelines. so Bob, when you doing your 35 mph loop?