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CyberTaco

TRD Off-Road
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Anthony
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Highway speed is a big factor. Any vehicle will have a dramatic drop in fuel mileage above 60 mph because aerodynamic drag increases fast at speeds above 60.

Of course we never drive that slowly, but it is likely that the EPA tests were done at a speed lower than the freeway speeds on our roads today.
I think EPA estimates are done at an unrealistic 55MPH, and I suspect on a dymo or windless conditions. This is my suspicion and I haven't researched how they do their estimates.
 

CyberTaco

TRD Off-Road
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Anthony
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@goin2drt I agree. Before displays shoved mpg data in your face I never even checked my mileage in my cars/trucks. I have watched those threads for a lot of vehicles and they at least are funny!

I have never really understood the purpose of doing that. If it gets a bit less than you expected are you going to lose thousands of dollars by selling it and buying something else?
I've always checked my gas mileage as it can be used as a gauge of something going wrong with the engine such as spark plugs or air filter needing changing.
 

CyberTaco

TRD Off-Road
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Anthony
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I use cruise all the time even around town. I think the hyper mile guys also probably don't use the AC and just run the vent. I use the AC set to 72.
My AC is on all the time mostly bc I live on the Gulf Coast. If the heat don't get ya, the humidity will!1 LOL!
 

CyberTaco

TRD Off-Road
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Anthony
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2025 Tacoma TRD Off Road Dual Cab, 2020 Subaru Outback Premium
Yeah my SR5 was showing 24mpg (flat indiana hwy driving) but the gps speed was of by 5mph at 65mph using the my gps to monitor speed vs the speedometer. I went up 2 sizes on my tires and now the speedometer matches the gps speed but my mpgs are 14.5 and I drive like a grandpa. It's seems that toyota did some sketchy stuff to get the reported mpgs out of this truck.
I noticed the speedometers on the 2 Tacos, a 2020 and now a 2025, I've owned read 2 MPH lower than what my GPS says starting at about 65 MPH. Both had/have stock tires. This will have a marginal effect on the odometer reading, thus affecting mileage calculations.
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