Crazy milage.

Coyote Chris

Site Supporter
Joined
Aug 25, 2011
Messages
3,656
Location
Spokane
Bike
10 Red NT 14 FJR, 17 XT
I have experienced this before in the Midwest with my other Subaru. 42 mpg at 65 true mph for over 50 miles in 80 degrees humid weather. Wind is blowing a flag gently in a cross wind. Calculated is running about 1 to 2 mpg less. Crosstrek is turning roughly 1700 rpm vs 3100 on my stick CRV. Frosty thinks it's the humidity. I got nothing.
IMG_20250725_104307605_HDR_copy_987x483.jpg
 
FYI the nav system warned me about a huge tire carcus in the road 1/2 mile out.
 
I have experienced this before in the Midwest with my other Subaru. 42 mpg at 65 true mph for over 50 miles in 80 degrees humid weather. Wind is blowing a flag gently in a cross wind. Calculated is running about 1 to 2 mpg less. Crosstrek is turning roughly 1700 rpm vs 3100 on my stick CRV. Frosty thinks it's the humidity. I got nothing.
View attachment 23087
Thanks for ruining my day Chris. I thought my Forester was doing good to average 37.7 mpg over the last several K miles. But the Forester is bigger and with a 2.5 l instead of your 1.8 l. My wife’s CRV averages around 34 mpg. But we all know that the drivers have a lot to do with fuel mileage.

I’ve found that I can get better fuel mileage by controlling the gas pedal myself instead of using the cruise control. Subaru claims that the cruise control does a better job of throttle management but I disagree.

I'm happy with my Subaru but I still haven’t figured out how to turn the radio off. I can turn it off but it comes on every time I restart the car. Turning the volume down to zero is the only thing that works.
 
I’ve found that I can get better fuel mileage by controlling the gas pedal myself instead of using the cruise control. Subaru claims that the cruise control does a better job of throttle management but I disagree.
Amen! I can get better mileage by controlling the gas pedal as well. Cruise control has only one prime objective, maintain NN MPH above all else. You will notice when traveling up even the slightest incline the trans will change ratios and engine rpms will increase to maintain NN. When I control the throttle and I approach an incline, I don't mind the speed dropping a few mph when I keep the throttle plate in the same position. Also, when travelling in hilly country, I will let let the vehicle gain a few mph on the downhill slope which offsets the mph you lose on the incline. I pretend I have an egg under the accelerator and apply only gentle pressure.

Mike
 
Thanks for ruining my day Chris. I thought my Forester was doing good to average 37.7 mpg over the last several K miles. But the Forester is bigger and with a 2.5 l instead of your 1.8 l. My wife’s CRV averages around 34 mpg. But we all know that the drivers have a lot to do with fuel mileage.

I’ve found that I can get better fuel mileage by controlling the gas pedal myself instead of using the cruise control. Subaru claims that the cruise control does a better job of throttle management but I disagree.

I'm happy with my Subaru but I still haven’t figured out how to turn the radio off. I can turn it off but it comes on every time I restart the car. Turning the volume down to zero is the only thing that works.
Cross trek is normally aspirated 2.5. accelerates briskley. To over 110. Maybe impreza has a 1.8. your average is fine. Milage dropped a tad now that I am at altitude and dry air but I am happy. I would question your belief about gas peddle. Even though I have 7 "gears" at any given speed, there is a small bit of hunting due to small hills. A Ford engineer at Oshkosh told me engineers HAtE sticks. Worse emissions and fuel economy. I don't use the radio but I sure love the glass cockpit and upgraded lane holder. One button for nav and I can talk to nav lady and she says, BUTTE MT. Let's Go! Another button and I see .my car on My Radar. Another and the car sticks like glue to the center of the lane for 15 seconds before telling you to rest your hand on the wheel. Great for finding that lit cherry bomb you dropped between your legs. I guess I use the volume knob for phone calls? When Bitchin betty tells me there is a cop ahead or road debris I can't turn down her voice. One bizarre thing. I filled up today and couldn't hear the engine was still on. So I looked at the tac and sure enough....
IMG_20250728_151005605_copy_663x868.jpg
 
Amen! I can get better mileage by controlling the gas pedal as well. Cruise control has only one prime objective, maintain NN MPH above all else. You will notice when traveling up even the slightest incline the trans will change ratios and engine rpms will increase to maintain NN. When I control the throttle and I approach an incline, I don't mind the speed dropping a few mph when I keep the throttle plate in the same position. Also, when travelling in hilly country, I will let let the vehicle gain a few mph on the downhill slope which offsets the mph you lose on the incline. I pretend I have an egg under the accelerator and apply only gentle pressure.

Mike
Mobile gas economy run said the same thing! When I ride, I make a game of trying to not touch the throttle lock. IF and only if one is allowed to let the speed vary, it would be interesting to see if it's man or computer who wins. When the computer was getting 40+ it was gently rolling Wisconsin. An SAE paper is in order. IF the computer were allowed a variance I still would not bet against it. If man were not allowed a variance, I would bet against him. In flying, we have a prop/engine rpm, a manifold pressure gage and an EGT gage. In a car, the computer controls many things and I just tell it the speed and how fast I want to get to that speed.
 
This cool morning near Butte. 42.5 mpg over 30 plus miles. 61 mph, auto pilot engaged. 1700 rpm. Varies to 1600. IMG_20250729_092942625_HDR_copy_3126x1389.jpg
 
Final reading was 43.3 over 80 miles. Very slight headwind, quartering. RPM would dip to 1500 at times but mostly 1600. Speed 62.
IMG_20250729_112004956_HDR_copy_1128x504.jpg
 
Last edited:
Cross trek is normally aspirated 2.5. accelerates briskley. To over 110. Maybe impreza has a 1.8. your average is fine. Milage dropped a tad now that I am at altitude and dry air but I am happy. I would question your belief about gas peddle. Even though I have 7 "gears" at any given speed, there is a small bit of hunting due to small hills. A Ford engineer at Oshkosh told me engineers HAtE sticks. Worse emissions and fuel economy. I don't use the radio but I sure love the glass cockpit and upgraded lane holder. One button for nav and I can talk to nav lady and she says, BUTTE MT. Let's Go! Another button and I see .my car on My Radar. Another and the car sticks like glue to the center of the lane for 15 seconds before telling you to rest your hand on the wheel. Great for finding that lit cherry bomb you dropped between your legs. I guess I use the volume knob for phone calls? When Bitchin betty tells me there is a cop ahead or road debris I can't turn down her voice. One bizarre thing. I filled up today and couldn't hear the engine was still on. So I looked at the tac and sure enough....
View attachment 23098
Hummm. I guess things changed. My son’s wife has a Crosstrek with a 1.8. My Forester is a 2.5. Both are naturally aspirated.

One thing I hate is that with Cay Play I can start certain functions with a voice command (like “navigate to,,,,”) but in order to make certain changes or quit that function requires doing so on my phone. I think it should be required that anything you can start by voice command you should be able to undo by voice command.
Maybe I just don’t know how.
 
Hummm. I guess things changed. My son’s wife has a Crosstrek with a 1.8. My Forester is a 2.5. Both are naturally aspirated.

One thing I hate is that with Cay Play I can start certain functions with a voice command (like “navigate to,,,,”) but in order to make certain changes or quit that function requires doing so on my phone. I think it should be required that anything you can start by voice command you should be able to undo by voice command.
Maybe I just don’t know how.
The 2025 base model, which no one buys due to lack of some safety features, is a 2.0. Dont know the rear end gear ratio but dont get the Wilderness. Designed for towing...low rear gear...
How odd! I push android play and there is the nav screen. I hit the mic button and say "Butte Montana" and a female voice says, OK, Butte montana. Lets go!. And I push start. At any time I can push a button and cancel Android play. Or switch to MyRadar with one button push. At no time do I touch my fone. EXCEPT if I try and take a pic...then I have to turn camera off.
Final 200 miles was 33 mpg, but it was construction zones, 65,75, and 80 mph. This is the first car I have ever owned where the calculated milage is often higher than the displayed milage. Dont know why.
 
Back
Top Bottom