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Not officially rated by the EPA, Toyota NA (scion) said at launch that the iM will return 37 mpg on the highway. expect 30-32 in town IMO...

New York 2015: 2016 Scion iM Debuts - The Truth About Cars
I think big difference is CVT vs manual. I get 27 city and around 32-34 MPG highway with A/C on, mine is a stick.

Another thing that improves acceleration and slightly improves mileage: turn off Vehicle Stability Control. In order to do that you have to hold that button for 3-4 seconds while the car is stopped.
 

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I get about 39-40 hwy mpg doing about 72 mph on cruise control with ac on. Averages about to 37 mpg including city driving. I've seen as high as 42 mpg but driving slower than 60 mph. Manual tranny too.

About 400 miles when the gas light turns on. I've pushed it one time to 430 miles.
 

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I get about 39-40 hwy mpg doing about 72 mph on cruise control with ac on. Averages about to 37 mpg including city driving. I've seen as high as 42 mpg but driving slower than 60 mph. Manual tranny too.

About 400 miles when the gas light turns on. I've pushed it one time to 430 miles.
Well, this is crazy! What am I doing wrong :) Are you calculating these numbers yourself or go off the iM MPG computer?
 

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Same here, shift points between 2 to 2.5k. Yeah it is boring but I bought the iM to save gas :D

Some may think that this is really bad but I've been doing this even in my Celica. Still runs to this day at 343k miles.
OK, I shift around 4,000 rpm. But even if I reset MPG meter when on the Interstate, it still would not go anywhere above 34 mpg. Even when I am always in 6th gear doing 70-75 mph. I usually get around 32 mpg highway-only driving.
 

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OK, I shift around 4,000 rpm. But even if I reset MPG meter when on the Interstate, it still would not go anywhere above 34 mpg. Even when I am always in 6th gear doing 70-75 mph. I usually get around 32 mpg highway-only driving.
you're doing something very wrong lol. if i drive like a maniac, constantly flooring it and weaving through traffic, then i'll get around what you're getting. maybe you're just too heavy on the gas and constantly speeding up and slowing down. try to keep it steady and don't watch the speed, watch the MPG meter lol, and then the speed.
 

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I get between 38 and 42 MPG figured by hand, most MPG displays are overly optimistic. My 2015 Toyota was telling me I was getting 15 to 17 MPG and figured out by hand was 13 MPG. Most of my iM driving is in town top speed 30 MPH. I live in one of those small towns were there are no stoplights.

CAD-Man
 

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OK, I shift around 4,000 rpm. But even if I reset MPG meter when on the Interstate, it still would not go anywhere above 34 mpg. Even when I am always in 6th gear doing 70-75 mph. I usually get around 32 mpg highway-only driving.
Lots of factors affect fuel economy. Main thing is driving style and terrain. Try using cruise control and minimize acceleration and deceleration. If you want best gas mileage, keep your car running at a steady state.
 
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