June Fuel Economy Stats

you could have gotten 1000 km on that tank - great

 

Date: 11th June 2010
Total Dist: 5360 km / 3330 mi
Tank Dist: 698 km / 433.74 mi
MFD: 3.9 L/100km or 60.35 mpg US
Calc'd: 4.14 L/100km or 56.85 mpg US
Fuel Added: 28.88 litres or 7.63 US gal


Date: 19th June 2010
Total Dist: 6264 km / 3892 mi
Tank Dist: 904 km / 561.75 mi
MFD: 4.0 L/100km or 58.75 mpg US
Calc'd: 4.32 L/100km or 54.43 mpg US
Fuel Added: 39.06 litres or 10.32 US gal


Date: 25th June 2010
Total Dist: 7189 km / 4467 mi
Tank Dist: 925 km / 574.8 mi == new record ==
MFD: 3.9 L/100km or 60.35 mpg US
Calc'd: 4.01 L/100km or 58.65 mpg US == new record ==
Fuel Added: 37.10 litres or 9.8 US gal

 

6/14/10 / 384.5 miles / indicated 49.5 / calculated / 47.632

6/20/10 / 289.5 / 51.8 / / 49.554

6/27/10 / 346.1 / 55.1 / / 53.131

6/28/10 / 286.9 / 58.3 / / 56.823

For some reason the average for the last four tanks is under 2 MPG discrepancy. It use to run around 3 MPG.

The last tank with 286.9 miles, when my wife and ,took a trip from Seaside Oregon to Cabelas in Lacy Washington. Via Hwy 30 from Seaside to Interstate Hwy 5 to Lacy Washington.

Temps were in the low to high 60's on average. Speeds were from 55 to 70 mph with at least 40 miles, maybe more, on cruise at 71 MPH indicated, probably 70 MPH true, on Highway 5 were the legal speed limit, in some areas is 70 MPH, for passenger cars.

I was really suprised at 56.8 MPG, that was round trip so everything is equal. Also only 1.5 mpg off the computer.

Impressed, considering we were only getting in the mid to high 40's MPG(calculated) a few months ago.


alfon

 

Date: 9th June 2010
Tank Dist: 873 km / 542.2 mi
MFD: 3.9 L/100 km or 60.1 mpg US
Calc'd: 4.1 L/100km or 57.2 mpg US
Fuel Added: 35.9 litres or 9.484 US gal

Date: 18th June 2010
Tank Dist: 1019 km / 632.7 mi == new record
MFD: 3.71 L/100 km or 63.4 mpg US
Calc'd: 3.90 L/100km or 60.3 mpg US == new record
Fuel Added: 39.7 litres or 10.501 US gal

Date: 28th June 2010
Tank Dist: 963 km / 597.9 mi
MFD: 3.77 L/100 km or 62.3 mpg US
Calc'd: 3.96 L/100km or 59.4 mpg US
Fuel Added: 38.1 litres or 10.069 US gal

My tank on the 28th of June was going to be my best yet, but the 4 of us packed into the car for a trip to Santa Cruz (over the mountain), my displayed MPG dropped from 64.0 mpg to 62.0 mpg by the time we finished the trip. The best is yet to come!

 

Will edit later

 

My June FE was 58.6 mpg or 4.0L/100K calculated. My best overall month so far since purchase in Feb 2010. This included daily work commutes in DC area of 11 miles or 28.5 miles oneway trips to carpool lot (shorter trip) or worksite (longer trip). Shorter trips on weekends running local errands. Also, one longer, mostly highway trip to the lake (~200 miles) driving between 55 to 70 mph much of the way. So, it represented a wide variety of driving conditions overall. I used many driving techniques for FE but also maintain speed to keep up with traffic.

 

Date: 30 June 2010
Total Dist: 1656 statute miles
Calc'd: 50.3 mpg US
Fuel Added: 32.9 US gal

My car is a 2010 Prius III with the sunroof. The car's trip computer usually estimates about 2 or 3 MPG higher, roughly in line with typical reports here. I haven't used the heater and rarely used the air conditioner (mostly just to see if it works). Stock 15" tires (Goodyear, model I don't remember). The tire pressure is whatever the dealer or Toyota set it to. (Frankly I haven't even looked at it yet.) Fuel is 87 octane, probably containing some ethanol though I'm not certain, bought almost entirely from either Costco or Arco.

 

06/05/2010 7.714 gals 402.5 miles 52.5mpg
06/07/2010 8.418 gals 411.7 miles 48.9 mpg
06/23/2010 8.040 gals 377.7 miles 48.6mpg

The above miles represent different experimenting with different terrain on a 840 miles trip plus local driving.
06/05/2010 miles are on I-20 with cruise control and A/C, then heavy driving in the DFW area before continuing on US75 north. Temps were in the 90s.
06/07/2010 miles represent travel from US 75 to I-20 East on US69 with variable speeds, lots of construction, hilly terrain, then I-20 at north of Tyler to Shreveport and back to DFW.
06/23/2010 miles are DFW area back to Central Texas on US 377, lots of hills, strong cross winds and then back to Brownwood where the last half tank is short trips around town.
My computer display on the car is showing an average of 50.5mpg

 

Date: June 10, 2011
Tank Dist: 415 Miles (US)
MFD: 64.2 MPG (US)
Calc'd: 60.9 MPG (US)
Fuel Added: 6.809 gallons (US)

Remarks: 40% City, 60% Highway

 

Date: June 28, 2011
Tank Dist: 470 miles (US)
MFD: 63.7 mpg (US)
Calc'd: 60.5 MPG (US)
Fuel Added: 7.766 gallons (US)

Remarks: 40% City, 60% Highway

 

My fuel has decrease with the warmer weather, even with AC running continuesly.

 

Check your (cold) tire pressures

 

WOO HOO finally broke through the 50 plus mpg . Same brand fuel and same pump real math calculation. Mix of highway and city 51.2 and just my third tank of gas. My prius and the chat group has taught me well. That was with the air on as we have been in a heat wave for a few weeks. Tires 42 front 40 rear. I can't wait till she is broken in.

 

Boy, this is so gas and cruise control specific. Filled up with some cheap gas and it went down to 46MPG at 70MPH/cruise/air on and with the cruise off it was 51MPG. I always get 56-59 MPG with the cruise off.