When the shaded area is in the battery half of the ECO bar I would expect to have the mpg be 100. It sometimes shows only 25 mpg. Just purchased a 2010 and learning how to get the best mileage possible.
View 8 RepliesI got prius i-tech Australia (should be IV or V in US). I just noticed this morning that my fuel economy is better when I got 6-7 bars on battery level, and worsen if i only got 2-4 bars. Is it just my imagination or any explanation for it?
View 8 RepliesOn a hot sunny day, occasionally I have to be stopped for extended periods with the A/C running which means the engine will come on for a few minutes out of every 10 minutes or so. to charge the traction battery. Engine comes on at 2 bars and goes off at 3 bars.
As engine efficiency at idle is low, would it be better to put it in D with the brake firmly pressed and push the accelerator so that the engine speed is in the high efficiency range so as to produce more charge for the fuel burnt and maybe also I could charge it to a few more bars on the battery indicator?
We just bought a 2011 and are only getting 40 mpg max. I wonder if the 110 Arizona summer heat has something to do with it. Pretty bummed. I have read 50 with careful driving is normal? I let bicycles outrun me? 12 volt battery? New plugs? It has 107,000.
View 19 RepliesWe accidentally discharged the 12 volt battery in our 2010 Prius with an interior light. By the time we noticed the car didn't have enough power to turn on. I removed the battery last night and charged it with an intelligent charger and have since reinstalled.
Will this have any long term effect on the battery? It seems these 12 volts are sensitive compared to a standard car battery. I have discharged numerous 12 volt car batteries with no major long term consquences after a recharge.
My 2010 Prius is 1.5 years old now and I had my first problem this morning. The last time I drove it was Wednesday so it has been less than a week. When I tried to start it this morning the dash lit up but was very weak. You could tell the battery was very low so I turned everything off. I hooked up my boat battery to the underhood terminal and it started right up. I looked around and all the interior lights were off. The other thing that happened is the right half of my display won't light now. No Clock or power gauge. I do, however, have speedometer and gas gauge. I didn't even loose my radio presets. The battery was weak but not dead.
View 19 RepliesThe dealershhip told me my 12volt battery may be dead. the symptoms are the car has now power and the key fobs do not work. I tried jump starting last night. The first time I hooked up jumper cables up my alarm started going off. I lost connection and reconnected and only the orange light came on on the power button, and check engine light came on and green light came on on park button.
View 17 RepliesIs there a way to open the rear hatch if battery is disconnected either from the inside or outside? Is there a cable or something for emergency?
View 2 RepliesI've just automatically left my AC on the past month I've had my 2010 Prius. I turned it off this morning and was surprised at the obvious boost in the car's power. It still ran in the ECO range, but with lots more zoom. Now that the warm weather is leaving the SF Bay Area, I might get used to leaving the AC off! My last 2 MPG's were 50.0 and 45.9 I'm hoping to see an increase w/o the AC on all the time.
View 9 RepliesI recently was stuck in a traffic jam in the middle of the Mojave desert. Outside temp was about 102 and we crept along for maybe 15 minutes going no more than 5-10 mph. I had the air conditioning on. I noticed the power bars were rapidly disappearing and got worried that I would lose the battery if I didn't get moving. Needless to say, I finally was able to speed up and the bars came back. (dropped to 2 bars).
View 19 RepliesGen 3 .... Driving in Power Mode to obtain the best mileage? I find I am getting better mileage in Power Mode.
View 10 RepliesIf my traction battery has plenty of 'juice' in it, and my 12v battery is dead....is there any way to 'jump' the 12 volt battery with the traction battery to get the car started?
View 19 RepliesWhile most of the emphasis I've seen on improving fuel economy seems to focus on warming the car up quickly in cool/cold weather, I seem to be experiencing significant mpg drops at the other end of the spectrum.
View 8 RepliesI am new to the prius 2010.
I filled up last week and I noticed that as soon as a single cell display in the fuel display part has some empty section like 3/4 fuel(single cell) the next day or after that that whole cell disappears without it showing that single cell as being empty.
Around which fuel cell, when displayed, is it important and recommended to fill up gas again, with one cell remaining or two etc.
When I go out to do errands around town (I live right in town) I get horrendous gas mileage. Now, I understand gas mileage is high at the beginning of a trip, but for this long and this high and under these circumstances? I'm getting ABOVE 10l/100km when I have 80% charge available (for americans, that's disgustingly high MPG like, pick-up truck high), AND my foot is completely off the gas. Literally, coasting, or braking, and I'm still sucking up gas. What the heck?
Is this just because it takes a certain amount of time for the engine to run no matter what or something? I still don't see any reason for me to be eating up all that gas when my foot isn't even on the gas AND most importantly, I have charge available. Feels pointless for me to use my car for what I use it for 70% of the time, which is for quick errands around town at low speeds. Thought the prius was suppose to be a superstar for this kind of thing.
So my fuel light started blinking after 480 miles. How much more can I drive it? The display shows 30 miles left before fill up but I read in the manual that when the fuel light starts blinking there is 1.6 gallons left so should that be like 75 miles left. Just wondering. To be on the safe side, I went to fill up.
View 19 RepliesI was heading to the gas station with one bar on the fuel gauge. When I got there to fill up I had two bars, same Miles To Empty (45). What would cause that?
View 6 RepliesI was installing an aftermarket nav system on prius 08, because 2 hours working with dome lights on I have to jump start, now battery doesn't show bars is blank no mpg status, a message appeared check a/c connections.
I check connections and NOTHING avg mpg got stuck... enter to service menu shows 13.6 volts while running and the car is running fine! just the bars doesn't appear not even mpg avg
Ok I read about replacing a bad or ailing 12v battery (mine was original - 2007 - and resting at 10.1v) and an increase in mpg's. But I didnt expect this kind of increase!
I bought the car 9-14-12 and had been driving it very hypermilishly...lol...and getting 48mpg average.
I have a 2005 Prius that I purchased in 2010 as the second owner. When I first got it, I would average 50-65 MPG depending on city vs. interstate (per trip computer). After about a year, I was usually in the 40's. However, in the past 6 months or so, the MPG has dipped drastically. Based on the trip computer, I average about 30 MPG on the interstate and 15-20 MPG in the city. I have read that often times, a dip in MPG signals a need to change the 12V. I tested the 12V, and it's usually around 12.4V after sitting unused for 12+ hours.
More info: -The poor MPG is consistent whether it's 95, 65, or 35 degrees outside.
-Flat terrain (Washington, DC)
-Usually shorter trips of about 20-25 minutes.
-75% city, 25% highway. Highway driving is pretty smooth, little traffic, average of 55 MPH. City driving is incredibly stop and go due to traffic, constant stop signs and red lights, etc., with probably an average of 15 MPH when I'm actually driving.
-No overfilled oil.
-Had an alignment maybe 8 months ago - nothing unusual about the drive or tire wear.
-Goodyear Viva 2 Tire P185/65R15, maybe 15k miles put on them. Tire pressure unknown at the moment.
-I drive like a grandma in D mode.
-I don't warm up the ICE.
-HVAC is off.
-In terms of whether any significant changes occurred around time I noticed the drop: none. I was living in Florida at the time, doing a highway commute of about 2 hours roundtrip every day with a small bit of city driving when the mileage drop occurred. I have since relocated to DC, and the problem is the same.
I've been using the EV mode - the EV portion of the curve without pushing the EV button - to run around town and to maintain speed once I've accelerated to traffic speed. It really boosts the mpg numbers and I'm able to get 55-60mpg on my 47mi. Roundtrip mostly highway commutes (hills included). Without the running in EV it's probably 42-48mpg.
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