GS - 4th Gen (2013-2020) Discussion about the 2013 and up GS models

Highway MPG on AWD

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Old 05-26-17, 06:59 PM
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k0kong
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Default Highway MPG on AWD

I know this is a beat to death subject but today i ran the my tank completely on highway miles and got 29.3 mpg with the AWD model. I was going about 70 - 75mph with some stretches to 80. Strangely going any slower seemed to hurt MPG . This is without a doubt the best tank of gas and just wanted to share my results. What have other people been getting recently?
Old 05-26-17, 07:37 PM
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JDR76
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I've gotten 28 mpg on all highway on mine. No complaints there.
Old 05-26-17, 09:14 PM
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aachowhan
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I agree, this car likes to go fast. I have found that on the highway I get about 25 ~ 27 MPG. In the city I get about 18 ~ 20. I used to get a lot worse but I guess the car has learned my driving style? I dunno, but I'm much happier then when I was getting 16 MPG.
Old 05-27-17, 04:52 PM
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AJLex19
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Originally Posted by k0kong
I know this is a beat to death subject but today i ran the my tank completely on highway miles and got 29.3 mpg with the AWD model. I was going about 70 - 75mph with some stretches to 80. Strangely going any slower seemed to hurt MPG . This is without a doubt the best tank of gas and just wanted to share my results. What have other people been getting recently?
On my latest 200+ mile trip, I got 24mpg on the highway with my AWD 4GS...two passengers, two small suitcases and average speed of about 75mph.
Old 05-27-17, 09:24 PM
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joedaddy1
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Pretty good. I usually get 25mpg w one passenger. 70mph. 200+ miles.
Old 05-28-17, 07:16 AM
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Spideyman1
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25 -26 all highway.
Old 05-29-17, 11:16 AM
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er34
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Originally Posted by k0kong
I know this is a beat to death subject but today i ran the my tank completely on highway miles and got 29.3 mpg with the AWD model. I was going about 70 - 75mph with some stretches to 80. Strangely going any slower seemed to hurt MPG . This is without a doubt the best tank of gas and just wanted to share my results. What have other people been getting recently?
Did you use cruise control?

I do alot of city driving with mine so my MPG is nowhere near that, but what I found is that this car is more efficient if you give it more gas to get up to speed from a stand still. Staying under 2500rpm will actually burn more gas as you're stuck in the lower gears for longer. I think it has to do with the rolling resistance of the AWD and the lack of low-end torque on these cars.
Old 05-29-17, 05:18 PM
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GregCanada
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I usually get 22-23mpg highway. Best ever maybe 25-26.
Old 05-30-17, 12:17 PM
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praetor
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I got 28MPG once but I think that was a fluke. Generally 22-24MPG highway is what I get.
Old 05-30-17, 12:25 PM
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Jeevz
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According to the car computer and doing 100% highway driving in ECO mode I'll get ~24 and in either normal or sport mode I typically get ~26 with no change in driving style, Go figure.
Old 05-31-17, 10:09 AM
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k0kong
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I got that mileage without using cruise control, I was moderating my maintain speed based on incline. If it was a descent, i let off the throttle and going uphill i allowed the car to slow down a bit. If i had to pass cars, i made sure i did not overtake too quickly.
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