Prius (2010-12) Fuel :: Driving In Power Mode To Obtain Best Mileage?


Apr 17, 2011

Gen 3 .... Driving in Power Mode to obtain the best mileage? I find I am getting better mileage in Power Mode.

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Prius (2010-12) Fuel :: Eco Mode And Bad Gas Mileage

Well been playing with all the mode to see what they do and the one thing I have noticed is I get worst mileage under ECO Mode. Why it doing this.

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Prius (Gen 3) Fuel :: Power Mode MPG For Aggressive Driving

My friend is an aggressive driver. After she drives there is a drop in the calculated mpg's by at least 2 mpg sometimes as much as 5. Would it be better for her to drive in POWER MODE not only for the mpg's,?

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Prius (Gen 3) Fuel :: Fuel Mileage Reduced When Driving In Rain

We gave the Prius a good workout in the rain for the first time today. Central Florida has been having serious amounts of heavy rain, creating water covered roads in our area. Normally the digital fuel mileage display shows around 55 MPG for most of our driving. However today it dropped to the upper forties very quickly.

We were running the wipers on continuous (low and med speeds), the AC (defrost) was running to keep the condensation off the windows, and the headlights were on. I wonder if the extra resistance of the water on the road also had an effect on the fuel mileage.

Even though we hit some fairly deep water and created large amounts of splash, the car tracked straight, the brakes worked well, and the power was totally uninterrupted. Other than the poor fuel milage we were impressed.

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Prius (2010-12) Fuel :: Mileage Uphill And Down

So, I was in Wash. State for a while this month and rented a Prius. I decided to check some mileage on mountain roads, and here's what I got. All of these are indicated by the computer, so they are probably 5% or so high. Unfortunately, I did not see either the maximum incline or average incline of these roads posted anywhere, so unless someone else knows them, these numbers are not worth too much scientifically:

UPHILL:

Going uphill on I-90 to Snoqualmie Pass from the West (from Seattle), at 70 mph (the speed limit), fairly steady, with a few decreases for traffic and curves: 18.6 mpg.

Going uphill on US 97 to Blewitt Pass from the north at 50 mph, also the speed limit: 27 mpg.
Going uphill on the Olympic National Park road to Hurricane Ridge, speed limit varying between 35 and 25, with a couple of sections as low as 15 mph: 22.1 mpg. (Maximum incline here might have been 6 or 7 percent).

On the Hurricane Ridge road, I reset the Trip Meter A about a mile from the top (interestingly both segments of the uphill trip registered 22.1).

DOWNHILL, mostly:

The Hurricane Ridge downhill produced an interesting number, because I didn't reset the thing at the top, so I had a mile of 22.1 mpg at the beginning. You go down for about 18 miles, losing about 5200 feet of altitude to nearly sea level (Strait of Juan de Fuca). We kept driving, and at 24.7 miles (so about 6 miles of driving near sea level), the mileage gauge still showed 99.9 mpg. (I took a picture, but it's too fuzzy to put in here.) It was a couple of more miles before I noticed that the trip mpg was down to about 91.

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Prius (2010-12) Fuel :: Winter Mileage Very Low 42 - 43?

Temps average maybe around 10-15F in the winter so mileage won't be great. Tires are up, grill is blocked. We're getting about 42-43 on the HSI which means about 40 mpg in reality (I've checked this many times and Toyota is off by 3 mpg on average in our car). But Mike in Maine shows up with a 60+ mpg in 15F temps, and I know my fellow Alaskan, Spiderman, is getting 50+ easily. My commute is more highway than stop and go. I don't use P&G but I'm very gentle with the go pedal. I feel that I should be getting closer to 50 here, even with the temps. Is this too much to ask? Maybe it is...

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Prius (2010-12) Fuel :: Mileage Dropped After Maintenance

I have 2600 miles on my 2012 mdl II. A month old. I have been averaging 47.5mpg since day one based on miles driven and gas put back in tank at each fill up. I have used only Mobil bottom 87 oct gas.Last fill up got me 48.2, very nice, then I filled up with mid grade 89 oct as it was all I could get then. The next day I was in the dealer for my 1000 mile checkup. when I got out my battery was down to 25%, okay no biggie. Then from there on out I notice my mpg changed alot. The comps used to read 49.1-50.1. Now it reads 42.2-44.1. I drive the same way and my 85 mile round trip to work hasn't changed. My first fill up since the dealer, got me 45.0 mpg. wow a big drop off.

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Prius (2010-12) Fuel :: Sudden Drop In Gas Mileage

I commuted to LA 2-3x a week. The mileage on my car is now at 90k. I have had an average of 40 mpg since new, but suddenly it began to drop. We took it to our local Toyota dealer and was told it was most likely a cable that needed to be cleaned. That was $160. It didn't work.

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Prius (2010-12) Fuel :: Humidity Impacts On Mileage?

The humidity has an affect on my MPG. I noticed that my MPG went from 49 - 52 MPG down to 44 - 46 MPG when the heat & humidity started here in June. Yesterday a cold front came through and the humidity dropped. I filled my tank up and noticed my MPG is back up to 49 MPG, so the only thing that is different is the humidity. The cold & humidity does affect the MPG (approx 4 - 6 MPG).

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Prius (2010-12) Fuel :: Hot Weather Mileage Decrease

I don't have a lot of data yet, but the last couple of times we had temps over 80F, my mileage took a significant hit - about as bad as when temps are below 20F (more than 10%)... Shutting off the A/C doesn't change things much...

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Prius (2010-12) Fuel :: Sudden Drop In Mileage

I am using a 2012 Prius and I was running around 23KMpL average. For sometime I am seeing my mileage around 17 - 18 KMpL. What could be the reasons for this ?

The only change happened in between is that I had a accident which I had to replace the front buffer.

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Prius (2010-12) Fuel :: Gas Mileage Drop - Averaging Between 41 And 43 MPG?

I bought a 2010 Prius II (150,000 miles on it) about two weeks ago. In that time the car has been averaging between 41 and 43 MPG according to the computer, and I calculated 41.3 MPG at my last fill up. I am concerned about the MPGs. I bought a brand new Prius in 2012, it was a III model and '12 year. That car always got 48 highway, and 50 in the city. From what I understand, the 2010 and 2012 models have the same engine and transmission set up and the only difference may be the software.

So my questions are; why am I getting 7 to 9 MPG less than my old (newer) 2012 Prius? What to do to get better mileage, but what actually worked? My checklist of repairs include; check 12v battery, change out spark plugs, just changed air filter, check brakes, oil change (using Mobil 1 full synthetic 0w-20), what else should I check/replace/update,

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Prius (2010-12) Fuel :: Why Does Mileage Drop At Least 2 Mpg When Raining

It seems that my mpg gauge always drops by at least 2 mpg when it's raining, even if one goes slower because of the rain. Why is this?

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Prius (2010-12) Fuel :: Do Cruise Control Impacts On Mileage?

I've heard that cruise control reduces mileage. This was in relation the Honda Civic Hybrid (Gen II).

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Prius (2010-12) Fuel :: Mileage Dropping Without Any Apparent Reason

Have had my 2011 Prius all of 4 weeks. Followed PC for months before the purchase, practice pulse/glide regularly and have really change driving habits to increase MPG. First tank was 51 MPG, than 48, 46 and now 45. each one was 75% city driving, 25% freeway.

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Prius (2010-12) Fuel :: Gas Mileage Went Way Down / AC On Nonstop With Higher Temps

I knew when I bought my car it wouldn't get optimum mpg as no car would with the many short trips I have to make every day but I have 5000 miles on it already and have averaged approx 46 with all the city and highway combined.

I took it into Toyota last week for the tire rotation and ever since it has been horrible. There were 120 miles on the tank and I refilled because I couldn't stand to see it staying around 39 on the computer. I have never seen that before. I checked the tired and they had brought them down to 32psi so I put then back to 40/38 and refilled.

Not noticing much of an improvement, sadly. Hovering at 40 mpg still. Weather has changed a lot. Temps much higher daily mid 80s to low 90s. This is my first summer with the car and yea the ac has been on nonstop with the higher temps.

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Prius (2010-12) Fuel :: New Tires Lead To Drop In Gas Mileage

Last October I needed new tires, so I had Michelin Defenders put on my 2011 Three in place of the OEM Firestones. The Michelins perform well and are nice and quiet, but...

My gas mileage (both indicated on the dash and calculated) has dropped by about ten percent. In researching the two brands of tire, I found that the OEM Firestones are rated at 836 revolutions per mile, and the Michelins are 839. I'm wondering if this is the reason for the apparent change in mileage.

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Prius (Gen 3) Fuel :: Driving In EV Mode Could Harm Battery?

I've been driving a bit different to try and get some more mpg. I will pulse up to about 45 then let off till ev kicks in and keep the bar right at the verge of going into ice. I can usually cruise at 40 mpg doing this on flat roads while only using the battery. Although if I'm able to do this ev mode for a long distance my battery runs down then the ice kicks in even with the bar below the ice line.

I'm still only getting 50-51 indicated mpg this way but much better than the 42mpg I got just driving it... My route has some hill and my tires are no lrr so I'm think that's has some to do with my low mpg.

Question is does driving 40 mph in ev mode till battery runs dead then recharge with ice just to run battery down again coasting with ev do any harm to the battery?

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Prius (Gen 3) Fuel :: 2010 - When To Use ECO Mode

I've been driving an 2007 Prius unitl last week, when I upgraded to an 2010 model. I'm very happy with it so far.

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Prius (2010-12) Fuel :: EV Mode Kicks Off At About 20 Mph

I've been hitting the EV switch to keep the car in EV mode for the first couple minutes. It kicks off at about 20 mph. It does let me get up to speed using EV mode so my hope is that will translate into higher fuel savings.

The default and Eco modes require starting up too slow while hitting EV lets me apply more power and faster acceleration. Wondering why Toyota didn't engineer that into the car though?

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Prius (2010-12) Fuel :: ECO Mode On The Interstate?

In reading the manual, I note that it says to use the ECO mode when you're doing a lot of stop and start driving. Does that mean I should NOT use it on the interstate? My daily commute consists of 11 minutes start and stop to interstate, 11 minutes on interstate, and another 11 minutes of start and stop. My Prius is not quite a month old, so i am still learning.

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