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Toyota Camry Hybrid MPG-Real World Numbers

856 messages,  Last post on Nov 22, 2009 at 8:38 AM

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What is this discussion about? Toyota Camry Hybrid, Fuel Efficiency (MPG)


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#315 of 856
The biggest variation. (possibly) by inincubus
Dec 22, 2006 (2:18 pm)
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Replying to: kdhspyder (Dec 16, 2006 3:20 pm)

I have posted here before complaining about my TCH's low fuel economy. Back then I have only used the chippest gas (87) and my tank avg was ranging from 34-36 mpg. Last week, because of the storm in seattle area the only available gas they had at the gas station(shell) was the highest octane gas (i'm not sure if it was 95 or 93????). With the same road condition and driving style, now the computer indicates the tank avg of 42 mpg .
I don't know if someone already have talked about this but yeah,,,try the higest rated gas if your car gives you less than 38 mpg and let me know if it improves it.
#316 of 856
Re: The biggest variation. [inincubus] by larsb
Dec 22, 2006 (2:27 pm)
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Replying to: inincubus (Dec 22, 2006 2:18 pm)

That's a good new number, and I'm really happy for you. I wish I could get that number out of MY TCH !!!
 
But back to reality: there is not an iota of scientific evidence that higher octane gas provides higher MPG.
 
If there was, then everyone would just use 95 or 93 octane and the 86/87/89 would just stop being made.
#317 of 856
Re: The biggest variation. [larsb] by inincubus
Dec 22, 2006 (2:40 pm)
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Replying to: larsb (Dec 22, 2006 2:27 pm)

yeah i too was the one who kept telling people how octane gas rate has nothing to do with the FE. so i have never ever used other gas than the chippest one unless it is recommended by the manufacturer.
from 35 to 42,,,this didn't happen slowly over long period of time. but over just one gas tank.
i'm going to experiment more. so this time I will use 87 again and see what MPG i get.
 
Question for those who get better than 42 mpg; what type/rate of gas do you use?
#318 of 856
Re: The biggest variation. [inincubus] by lessachs
Dec 22, 2006 (3:49 pm)
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Replying to: inincubus (Dec 22, 2006 2:40 pm)

My best in town mileage is 30.
In warmer weather, I was doing closer to 40.
A lot of the gas we use here is 10% ethanol which drops mpg, too.
I'd like to know if anyone in the midwest with my winter weather conditions and fuel blend is doing 40 or more.
If they are, I'm doing something wrong.
Thanks.
#319 of 856
Re: First winter in your TCH/Prius? Fuel Economy Considerations [kdhspyder] by explorerx4
Dec 22, 2006 (3:55 pm)
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Replying to: kdhspyder (Dec 16, 2006 3:20 pm)

i can see an ICE engine losing maybe up to 20%, but not 40%, like the example provided. i'll just say i have never experinced such a drop in mileage in any vehicle i have owned.
#320 of 856
Re: The biggest variation. [inincubus] by gillesmtl
Dec 24, 2006 (7:20 am)
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Replying to: inincubus (Dec 22, 2006 2:40 pm)

I did try using high-octane fuel twice. Once was in summer, and the second time in the fall.
 
The results were similar : a 4% improvement in fuel economy, but a higher cost per mile. So I will stick to standard fuel.
 
The explanation for the higher mileage with high octane is a known scientific fact : Higher octane allows more spark timing advance (automatically performed by the ECU), wich improves energy efficiency.
#321 of 856
Re: :( i'm unhappy with my mpg [wvgasguy] by wvgasguy
Dec 25, 2006 (2:15 pm)
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Replying to: wvgasguy (Dec 10, 2006 1:01 pm)

On my routein trip of 120 miles that I normally get 40.5; today at 22 degrees I got 37.5. Coming back I typically can get 39 and I got 37.7. It was 55 degrees on my return trip.
 
Update: Took the trip again for Christmas. Different variables. It was 45 degrees, 750 pounds of passenger and a full trunk. Going down I drove 80 to 85 (it has been some time since I've done this. I averaged 32.5 mpg (this is the trip portion I can average 40.5 mpg in warm weather, driving under 70). Conimg back, about the same same variables as going down except I drove 75 on cruise and I got 35 mpg. The difference in 75 and 85 mph is very significant.
#322 of 856
Re: :( i'm unhappy with my mpg [wvgasguy] by mjones12
Dec 25, 2006 (2:30 pm)
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Replying to: wvgasguy (Dec 25, 2006 2:15 pm)

The difference between 75 and 55 is also very significant, and those of us who are concerned with saving fuel, along with getting better gas mileage, don't need to be driving 85 mph. Doesn't make sense to me to be concerned about getting better mileage or concerned about fuel supply and demand (thus prices), and then drive at 85.
#323 of 856
Re: First winter in your TCH/Prius? Fuel Economy Considerations [explorerx4] by kdhspyder
Dec 26, 2006 (3:39 am)
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Replying to: explorerx4 (Dec 22, 2006 3:55 pm)

I think you might be surprised. I certainly was. With the new fuel consumption graphs in the hybrids it's very very easy to measure specific situations for even limiited durations. Having driven normal ICE's all my life all I had to go by was a tank average at each fillup.
 
Most times the tank average would be 32-34 mpg but sometimes it would be 27 mpg. There was no way to identify why one tank might be lower than another. now with the Fuel Consumption graphs this can be measured and quantified even for limited durations.
 
This Fuel Consumption graphing would be very very useful in every vehicle. It would show clearly the effects of different conditions and different ways of driving.
 
You may be right about ICE's being affected somewhat less by these conditions. But any estimate is an SOTP one.
#324 of 856
Re: The biggest variation. [lessachs] by larsb
Dec 26, 2006 (5:36 am)
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Replying to: lessachs (Dec 22, 2006 3:49 pm)

Lessachs:
 
Did you mean to say,
 
"my best in town mileage is 30 MPG" ?????
 
In a 2007 TCH, you are only getting 30 MPG in city driving? On dry roads? At speeds of 25-45 MPH?
 
That cannot be true, or something must be wrong with your car or the air in your tires must be about 20 PSI.
 
My 61-yr-old mother was here last month (who had never before driven a hybrid and is not a slowpoke per se) and she drove my TCH in Phoenix city driving and her lowest for 140 miles of driving was 35.3 MPG. I had to wonder how she got that bad of mileage, because I would have to drive like a maniac to get below 35 MPG.
 
If you are getting 30 MPG in the above conditions (dry road, speeds of 25-45 MPH, and tire are at least 32 PSI) then one of two things are happening:
 
1. You are driving the car too fast and too hard.
2. There is something wrong with your car.
 
There is no other explanation. Getting only 30 MPG in a normally-performing TCH is almost impossible.
 
PS I thought of another possibility. If you are in REALLY COLD weather, and all your "in town" trips are 5 miles or less, you could probably do as low as 30 MPG because the car is never getting heated up enough to use the HSD system properly.

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