2010 MPG Stats - Post Them Here

I am getting 65MPG, for 70 degree at Brownsville, TX. Speed was 63 mph. I got 540 miles for 8.94.. gallon. Around 60MPG calculated. 4000 miles in the car...

 

Prius with 4 quarts of Mobil One 0 X 20 motor oil, so it is not overfilled, Michelin energy saver tires, 195X65X15, well broken in with over 7,000 miles, all four tires have 44 max pressure with Nitrogen (Costco).

Car now has 18,677 miles, so everything is set up for Max MPG's.

Oregon has 10% Ethanol all year long. Temps ranged from 32degree up to about 55 degrees, with wet roads off and on.

The last three fillups:
134.9 miles / 3.095 gallons / indicated 45.9 / actual 43.58
247 / 5.831 / 45.6 / 42.35
283.1 / 6.262 / 48.1 / 45.2

Not 50 MPG as EPA states, winter, even mild winters like
in Seaside Oregon, take a high toll on your mileage more than
any other car I have owned since 1966.

alfon

 

I purchased a 2010 III (w/sun roof) in November. I now have over 7000 miles on it. I changed to Mobile 1 0-20w, put 41 psi in the tires, and have the lower grill blocked 100% (even in 60+ degrees - scan gauge measuring temp in the 190s).
I have always driven cars to get the best mileage possible (must be the engineer in me).
I made a trip from Fl to Ma in Dec and returned in Jan. The worst mileage was 46 mpg. This tank was purchased in Berlin, NJ 1-03-10. It must have had a real bad mix. The tank the day before that was in a snow storm with Ma gas at 52+. All mpgs are from on the HSI.
All other tanks were above 50 mpg. My overall average is 53+. My best tank was 59.2.:cheer2:
I am working on a 60 mpg tank now with 3 clicks left. About 60% of my driving has been in warmer temps but Fl has been cold this winter. I know I will not get any sympathy for that. It's all relative.
I am amazed with this vehicle. It seems that the actual mpg calculations are about 2-3% lower than the HSI.
I believe the more you learn about good mileage driving and apply it, the better mpg you will get. The outside temp is a real drag on mpgs.

 

HSI: 42.9 MPG
Actual: 40.31 MPG
Lifetime: 49.54 MPG
Not bad considering this was a tank with 425 minutes of idling with the heat on 70 degrees while parked.

 

Here you go, here are all my tank stats since we bought our Prius at the end of August. All fillups (except the initial one) were done with regular 87 octane gas, at the same pump:

Code:

Date     miles    gals    actual mpg   dsp mpg    dsp mph
----     -----   -----   ----------   --------    --------
9/15    486.5   9.785     49.7           50.1           30
9/30    512.4  10.292     49.8           52.3           38
11/7    398.8   9.750     40.9           43.9           30
12/1    398.8   9.126     43.7           47.1           36
12/15   356.2   9.034     39.4           43.0           35
12/24   150.5   3.185     47.2           41.7           ??
12/24   353.7   8.323     42.5           45.0           58
12/28   333.4   8.890     37.5           40.1           54
1/2     342.9   8.536     40.2           42.4           53
1/25    315.3   9.171     34.4           37.7           23

and it looks like our current tank will be lucky to break 30mpg actual. Has me kind of concerned -- I expected some drop in gas mileage during the winter, but not 40%.

 

Here in cold winter Wisconsin, the MPG is really hit by the cold - mainly because the heater needs to run the gas engine to make the heat. Here's a graph of my mileage so far (the 61 MPG was an anomaly I think, due to not filling the tank all the way.)

 

I have now driven 5,410 miles and averaged 43.16 MPG based on actual gas use (not the display, which reads high). The cold Wisconsin winters have affected the mileage a lot. I expect to do much better when it gets warm.

Just for fun, I compared the MPG with our other two cars, a Honda Accord and a Mercury Villager. Here's the comparison:

 

With different tankfuls, I've tried driving different styles to see how much of a difference it makes in MPG. Driving very carefully (no sudden acceleration, anticipating braking, watching the display to optimize mileage, etc.) gives me around 48-49 MPG. Driving more "normally" gives around 40-45 MPG. Driving a little more aggressively gives 35-37 MPG. (I have not tried driving like a total idiot, I see that all too often.) So the Prius gives great MPG almost no matter how you drive.

 

temps make all the difference. filled up both cars earlier this week and both at 50 mpg...but we have had warm weather here. we have basically had early may weather in January. the last fillup was about the same.

in comparison, in November when we had temps topping out in the mid 30's i was getting 10% less mileage at 45 mpg...keep in mind that although 50 mpg sounds good its still 14% less than the 58 mpg i was doing last summer

 

On my last two fill-ups I've only been getting 32 mpg! This is because of extended periods of subfreezing temperatures and very short daily commutes back and forth to the Metro. Of course, 28 inches of snow doesn't help! (28 inches was last Saturday -- we received about 10 more inches Tuesday and Wednesday.)

BTW, my 2010 has done very well in the snow. In my 2006, I would get nervous even driving in wet weather, let alone snow and ice.

 

the weather is EXACTLY why. look at the 2006 in my sig. last winter, we had record snow followed by near record cold. that same car that has gotten 50 mpg on its last two tanks, did 34 and 37 mpg last year.

 

My highest MPG is now at 46MPG. I have never gone that high. I heard cold weather will give bad MPGs and if the car already "Broken in", it will be give better MPGs?

I had the car over 3 months only. Put about 4300 miles on it already and the weather here has been about 30 - 50 F. Can't wait till Summer to see if I can get better MPGs.

 

I own 2010 Prius III since Jan 21st and has 380 miles on it, it shows 38 MPG .. is it bad ? .. thanks to CT weather .. is should be better in summer then ..

 

Fourth Tank 35.3mpg (calculated) 38.8mpg(indicated)

Definitely not a cold weather car. I increased the tire pressure it didn't seem to help.

Tony

 

wtg!! weather makes all the difference. where are u?? i am getting 48-50 mpg now. got 55-61 in summer. so you should be near there as well

how did you track your idle time?

nope, not bad, normal. check out my post above (#371 i think) same car, 2006; last two tanks 50 mpg...last winter mid 30's... difference ??

about 30º

 

Thats a bit low, but might be normal for where you're at - noticed in other threads you do a lot of city driving. I'm in Chicago, and my real/pump mpg for my last 5 fillups were 43.1, 42.8, 46.9, 49.2, 48.4. When I first bought and drove the car in late Dec. my initial mileage weas 43.1. The outside temps since then (when I drove the car) varied from 15F - 35F on average. Also I've decided to drive the car conservatively for now - no higher than 60 / 65mph on highways. My tire pressures (when cold) are 38F/35R, so not all that higher either. I do mainly highway/interstate driving. No grill blocking or anything fancy.

I have noticed a decent mileage increase in the display when temps are above freezing (32F).

A petty thing, but check the oil on your dipstick after driving your car and then turning it off & waiting for 5 min or so. Your oil level should not be above the full (top dot) mark. Mine was filled correctly from the dealer as it was exactly in the middle (between top and low dot). And when getting an oil change, I requested the same. Basically if your oil is overfilled, other ppl are saying it will reduce FE.

 

During the winter, I'll see 51-53 mpg. The first 10,000 miles saw ~55mpg, with occasional stints above 60mpg. The best was 63 mpg.

 

My old gen 2 51.7 MPG over a 400 mile strectch I drive monthly.
53.1 with my new Gen 3
Mitch

 

My brand new 2010 after it's first 717 miles is averaging 46.3 mpg! This is about half city and half highway. I live in Wisconsin where the temps have been from 10-36 degrees F. I'm very happy considering the temperatures!

 

I was getting in the 40's, bought the car in December in Pennsylvania, now, since the brake-fix, and a couple of slightly warmer days, I suddenly hit 52.5mpg, on the display. And I was just driving it however I felt like driving it. A pleasant surprise. Milage about 3,500. Did it suddenly get broken in, or was the weather the thing? Or, did they just reprogram the display along with the brake fix to make me feel better about owning the car? Clever PR!? Just kidding.