23rd Dec - 2nd Jan Tank Miles: 556.3km Total Miles: 40663.4km MFD Avg: 4.8L/100km Calc'd Avg: 5.34L/100km Fuel Added: 29.700 litres Cost: $30.12
Second tank. I'm lovin' this car. 28rd Dec - 9th Jan Tank Miles: 436 Total Miles: 828 MFD Avg: 51.7 MPG Calc'd Avg: 52.0 Fuel Added: 8.39 gal. Cost: $18.70
2nd Jan - 15th Jan Tank Miles: 568.8km Total Miles: 41232.2km MFD Avg: 5.0L/100km Calc'd Avg: 4.89L/100km Fuel Added: 27.804 litres Cost: $27.36 Avg Temps: -5°C
January 12, 2007 Trip Miles: 365 miles Total Miles: 607 miles MFD Avg: MPG Uh.... what's MFD? I figure 40.57 MPG (365 / 8.996) :blink: Calc'd Avg: Uh... how's this different? Rounded? 41 MPG? Fuel Added: 8.996 gal. Cost: $24.20 ($2.69/gal - E10 - 1st tank of this... we'll see how the mileage bears out) QUESTION: Since the gas bladder doesn't hold a fixed amount of gas, how reliable is the fuel economy computation? Do you go by the total number of trip miles for that tank & divide that by the amount of gallons you put in when it was empty? Thanks for the support for those of us who are occassionally mathematically challenged, Jul-b'ar
The MFD provides the accurate computation of MPG. Hand-calculated computations can not be accurately performed. Sad, but true. My report: Got gas a few days ago. Date: Jan 11, 2007 Tank MPG Average: 54.5 Tank Average Temp: 37.8ºF Improvement over last tank: 0.6MPG Gas Consumed: 9.610 gal. Tank Miles Driven: 459.4 Lifetime Average: 50.5 Lifetime Gas Consumed: 547.88 Total Miles: 27,647 This new tank started off most horribly. This morning I had to run the engine to defrost the windshield. After about 85 miles, my current tank MPG is around 45.3. I really want to get it up to 50.0MPG or better. Historically, December and January provide my worse tanks; hopefully if I can make it through this month it's straight up from here. Click the link in my signature for all the details.
Jan. 5th thru Jan 12th Tank MPG = 58.5 calculated, 59.8 MFG miles driven = 577.4 fuel added = 9.874 gallons tank average temperature = 60 F driving conditions = 60% hiway at 55 - 70 MPH, 40 city at 35-45 MPH. Hiway this tank was totally without cruise, saw 5 MPG improvement by not using cruise.
It's been very mild here for the most part. av. temp according to PSE&G =46 SO FAR: MILES 1138.4 GAL 24.405 MPG 46.6462 Still smiling!
East of Seattle it's been in the 20s and 30s lately. I filled up recently with two pips left on the gas gauge, and could only get 6 gallons in. It was snowing outside at the time. My lifetime milage is 42.4mpg on the MFD for around 1750 miles of driving since mid October. 25 miles into the new tank, the first pip went out. Looking forward to summertime when I can get more gas into the tank. Dave
<div class='quotetop'>QUOTE(Tideland Prius @ Jan 6 2007, 10:12 AM) [snapback]371788[/snapback]</div> Darn! I can't compete with you Tideland. Please tell me you drive at least 20 minutes each time you get in the car and spend most of your time on the freeway. My trips are usually about 12 minutes and almost never on a freeway. If it is on a freeway it is usually up the steep malahat highway! Doh!
<div class='quotetop'>QUOTE(Fibb222 @ Jan 16 2007, 01:03 PM) [snapback]376430[/snapback]</div> My commute technically is 13-15 mins but with traffic, it goes up to 20 even 30 mins. It's 14km long with a 4km highway at 80km/h (although the highway route to school, it's uphill). I get my best mileage on the way home since it's downhill on the highway and the rolling hills help too. Lastly, my engine rarely gets up to normal temperature by the time I reach school. It usually warms up on the way home after the highway sprint. I also blocked my grille and when I refuelled yesterday, I got 3.7L/100km on a round trip to school and back (26km)
Well, it's the terrain that's boosting my numbers. A little bit of both. Sometimes I have a little fun and punch it a bit more. Otherwise, I'm more or less on par or slightly slower. On a flat(ish) surface, I tend to keep it under 16L/100km for acceleration and have no arrows to/from the battery.
<div class='quotetop'>QUOTE(Tideland Prius @ Jan 16 2007, 02:42 PM) [snapback]376491[/snapback]</div> Wow, so despite your commutes challenges you still get really good numbers. How quickly do you generally accelerate from a stop relative to the cars beside and behind you? I tend to leave other cars behind - based on the idea that the engine is more efficient at higher rpms- unless of course that I can see that I'm going to have to decelerate again right away. Right now I'm trying to get under 6.0 L/100km (with no freeway driving and many a short trip) on this tankful. Thanks
<div class='quotetop'>QUOTE(Mr Frodo @ Jan 9 2007, 06:47 PM) [snapback]373420[/snapback]</div> Is it real cold where you are? I am still on my first tank of my new 2007 Prius, but I am consistently getting only 29 MPG Daytime highs have been in the 30's here lately. Only the last two days has it got into the 40's It even snowed two days, and temps did not get above freezing. Now I generally do take short trips of 10 min or so. Maybe 20 min is a long trip for me. And it has been very cold here this past week. But still, how are you getting so much better mileage?? I have been keeping a close eye on the Energy and Consumption screens, and I see that my Prius only runs on battery power when I first start it up, or when I start moving after a traffic stop. And that is only for a couple of seconds. The rest of the time, I am running on gas motor only. Now the Energy screen shows the system trying to recharge my battery. Yet, it does not show much in the way of watts being regenerated. So the battery never gets fully charged. It varys from showing a 2/3 to 3/4 charge in the battery. What is wrong? Did I get a lemon? Or is it just a factor of it being cold, and my taking such short trips? I saw someone from Alaska post better mileage than what I cam getting, though. Lance
19th Jan - 27th Jan Tank Miles: 389.0km Total Miles: 41891km MFD Avg: 4.9L/100km Calc'd Avg: 5.36L/100km Fuel Added: 20.858 litres Cost: $18.23
Fill Date: 01/05/07 Total Miles: 21820 Tank Miles: 484 MFD MPG: 55.9 Avg. Temp: 41.7°F Avg. Trip: 30 minutes (16 miles) Fill Date: 01/17/07 Total Miles: 22146 Tank Miles: 326 MFD MPG: 52.7 Avg. Temp: 38.3°F Avg. Trip: 30 minutes (16 miles) Fill Date: 01/29/07 Total Miles: 22557 Tank Miles: 411 MFD MPG: 52.0 Avg. Temp: 31.0°F Avg. Trip: 30 minutes (16 miles) 10 minute trips will do that. Especially if you let the car warm up a bit before you drive it. If you're really concerned about it, next time you fill up your tank, take a 30 minute drive. Remember to reset your MFD MPG. You should then see it do better.
I'm sorry to hear that I won't be able to calculate my mileage the old fashioned way. I keep hitting the reset button on the MFD when I wipe fingerprints off the display screen. <_< I feel compelled to keep the car spotless until the first nick in the paint or one of my grubby kids christens her with something other than a bottle of champaigne. After all, she's only a two week old baby today. Like a proud momma I love those days when the temps rise above 30F and I entertain/annoy colleagues by announcing my baby's latest trick, "She got 52 mpg today!"
<div class='quotetop'>QUOTE(jul-b'ar @ Jan 15 2007, 09:42 PM) [snapback]376125[/snapback]</div> Multi Function Display.
27th Jan - 1st Feb Tank Miles: 278.3km Total Miles: 42169.3km MFD Avg: 4.9L/100km Calc'd Avg: 5.03L/100km Fuel Added: 13.996 litres Cost: $12.09 This refuel was rather funny. I went in, refuelled and drove off before the Civic next to me was done and the minivan driver (who came in the same time as I did) even started! (He was waiting for the next available pump) The minivan driver was just staring as I exited the station.