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Hi, we just got our 2015 XLE in November and I just noticed something interesting. When we did the first several complete fill ups the RAV4 would say the mileage range was 300 or 301 miles. I did a fill up this past week and it reported a mileage range of 280 miles. Is this a big discrepancy or normal?
 

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Probably okay due to the colder weather and the longer warm up time for the vehicle. My other cars drop 2 to 3 MPG in the winter and some of it is also due to the winter blend of gas.

Frank 2015 Rav4 XLE AWD with 10500 miles
 

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The range is somewhat pessimistic.
I've run the "range" down to zero and the needle hasn't even been all the way down to "E"
With the needle on "E", I've never put more than 14 gallons into the 16 gallon tank.

Manufacturers do things like this with fuel gauges, range displays, and low fuel lights to cover their butts.
If you ran out of fuel in a blizzard and died while your range still indicated that you had 50 miles left, your family would file a lawsuit against the manufacturer.
 

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Its based on the current average MPG that dates back to whenever that data was reset. If current MPG is more or less than the average, it will be off.
 

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The reasonably accurate way to determine fuel mileage range is to fill the tank, set the trip meter at zero,and after having used enough fuel to need another fill up arithmetically divide the number of miles driven by the number of gallons needed to fill the tank. The result then can be multiplied by the gallons capacity of the gas tank in order to provide the approximately absolute mileage range, and of course one should deduct an appropriate amount so that one won't run out of gas between fill-ups.
 

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Trust the math done at every fill not the computer. Miles traveled divided by gallons used.
 

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Hi, we just got our 2015 XLE in November and I just noticed something interesting. When we did the first several complete fill ups the RAV4 would say the mileage range was 300 or 301 miles. I did a fill up this past week and it reported a mileage range of 280 miles. Is this a big discrepancy or normal?
Since you have a tank capacity of 15.9 gallons, these range estimates mean that your MPG dropped from 18.9 in November to 17.6 now.

That is only a 1.3 MPG reduction. In Ontario my mileage drops at least 4-5 MPG between summer and winter. This is due to a combination of colder temperatures, longer idling times during warmup, and the introduction of winter gas blends.

I don't know how much the temperature changed in your area between November and now, or when/if winter gas was made available, but many things could explain a small change of 1.3 MPG.

Maybe you just baby'd the RAV when it was new and now you are driving more aggressively!
 

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Since you have a tank capacity of 15.9 gallons, these range estimates mean that your MPG dropped from 18.9 in November to 17.6 now.
Neither of which is even close to being correct.
 

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Neither of which is even close to being correct.
I'm not sure what you mean. These are certainly typical mileage numbers for the RAV4.

In over 350 recorded fill-ups in my RAV4 my mileage varied from 13 MPG to 28 MPG with an average of 18.9 MPG. My winter average alone would be about 15 MPG (estimated/guessed).

Of course I have the V6.
 

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My ranges are pretty low too, about 320-350 miles, but I've never had to put more than 13 gallons in my tank even with the needle a notch above empty.
 

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I log my fuel purchases on Fueleconomy.gov. Overall, getting 27 combined. Like CircusEnvy, never put in more than 13 gallons. When I hit 332 miles yesterday the light did come on and was prompted via info screen to find a gas station.

Miles Gallons City Highway MPG
230 8.995 30 70 25.56976128
217 8.023 10 90 27.0472393
225 7.263 10 90 30.97893333
284 10.065 30 70 28.21659279
194 7.185 30 70 27.00069618
160 6.251 20 80 25.5959053
236 7.544 10 90 31.28313828
308 12.026 20 80 25.61117554
333 12.528 30 70 26.58045959
 

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I'm not sure what you mean. These are certainly typical mileage numbers for the RAV4.

In over 350 recorded fill-ups in my RAV4 my mileage varied from 13 MPG to 28 MPG with an average of 18.9 MPG. My winter average alone would be about 15 MPG (estimated/guessed).

Of course I have the V6.
Ya, the 4.4 does a lot better than that since the V6 is not available ;)

Seriously... wife does a LOT of stop and go and gets 22. We go on a road trip and I get 30.

But as I said before, the vehicle is a good 2 gallons away from being "empty" when the "range" hits zero miles remaining... got an easy 40 miles left.

 

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Ya, the 4.4 does a lot better than that since the V6 is not available ;)
Yes it seems the I4 engine is considerably better than the V6. This surprised me because when I purchased my 2008 V6 ( fall 2007), the I4 was rated at approximately 1 MPG better on the highway.

I may also have misunderstood the OP's original question. I interpreted his question to be "why did my estimated fuel economy drop by 1.3 MPG between November and January". It seems others interpreted the question to be "why is my economy so low" or perhaps "why is the estimated economy so incorrect".

Anyway here is a recording of my fuel economy on the V6 over 7.5 years (356 fill-ups) for comparison. The best readings were 100% highway, but my typical driving habits are 80% city, and almost always maximum acceleration. You can see the rising and falling trends throughout the seasons.

 

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I may also have misunderstood the OP's original question. I interpreted his question to be "why did my estimated fuel economy drop by 1.3 MPG between November and January". It seems others interpreted the question to be "why is my economy so low" or perhaps "why is the estimated economy so incorrect".
Ya, that was basically the question, but since the reference was the dash readout, it's not as bad as believed.
It's a 16.1 gallon tank, so instead recalculate the ranges using 13 or 14 gallons and the estimated MPG is at least a little more accurate, but really, the "right" way is to get a ledger book or spreadsheet and calculate manually, or use something like Fuelly which takes the math out of it..

Summer vs winter blend fuel makes a difference, temperature, road conditions (ice and snow are horrible for fuel economy), longer warm-up time in the morning while clearing frost....
 
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