I was cruising down on the 210 today and decided to turn off automatic climate control and set fan speed to 2 and temperature to 75f. Weird thing is that when I checked the MID trip computer, it read an avg MPG of 24 even after a trip computer reset. A few minutes later, I thought to myself, it cant possibly be this low because I've had instances where ive even hit 34-36 mpg on the freeway. So I turned on climate control and set it to automatic and set the temperature to 75 and my MPG began to slightly increase from 24 to 26. Hrm....

I reset the MID again and the trip computer started reading 32mpg. Interesting..

Anyone else encounter this?

 

how are you turning of the auto control yet setting the temp to 75?

 

I just keep tapping the A/C button which will go from a/c on to a/c off.

 

Never heard of this, ill try it

 

i wondered for a second... then realized i could be in a car with worser MPG that doesn't have climate control (previous car)

 

There are too many variables. Chances are you encountered a grade too small to notice or a slight head wind with the AC off. If you rolled the windows down when you shut the AC off you will see a decrease in mpg at freeway speeds.

 

I would love to get 24-26 mpg. Mine usually says 20-22.

what's up w that?

 

My 07 Type S is ALWAYS left on auto and I keep the temp at either 69 or 70. Whatever the gas mileage is I dont care. I mean come on my car before the Type S was an 08 Grand Cherokee SRT8. Thing was a BEAST but damn was it thirsty :-)

 

holy snap 34 to 36???? wtf.... tell me how u get this.......me all local is 17, 18 at best. whats your local mpg?

 

I am running on 17inch stockies with Goodyear Eagle GT all season performance tires and hankook ventus directional tires in the rear with 37 ish psi all around.

As for my local mileage, it's around 18. Hey thait, someone is having a minimeet as well as free pizza :-P tomorrow in Beverly hills. are you interested? https://acurazine.com/forums/socal-310/help-installing-spec-rear-749909/

 

hrmm 18mpg?? are you granny the pedal? i have to drive conservative to get 18.

hey, i would go but i cant since i got work till 5 tomorrow =[. if its still going on ill drop by then. havent actually head out to meet any tl people minus tlheaven and scotterson.

 

haha..i am sortof a granny at the pedal :-P

I will slowly accelerate from a stop and will ease off the gas as I approach a red light and will even just let it coast when I see a red light ahead.

 

I got 37 MPG earlyer this week and was going to post a new thread for this, guess they beat me to it. It was a 10 mile trip with an average speed of about 57MPH IT WAS CRAZY! I've never had that happen before, the best I've gotten was like 32 and i was tailgating an SUV to catch the draft lol

 

Not possible without going downhill and with a tailwind! Did you base this off what your car was saying? Try getting that fuel economy going the opposite direction ;-)

 

The new EPA ratings took effect based on teh fact the old results were with optimal conditions. The new ratings take into effect things like the A/C. SO your findings are what the EPA long knew.

 

the computer's reported average mpg is very dependent on when you reset it. when I first got the car I reset it while I was doing about 60mph on a downhill. Wow! I was getting 65mpg! Sweet!


Hey, it fooled my passenger

 

I use both the MID and Instant average (hacked NAVI) numbers to get a basic idea of what my true mileage is. I hate math, so I never try to figure this out the real way!

Anyway, I have an 06 AT, 47K, Pirelli PZero on stockies (38F/35R). I Seafoamed per the DIY in the 3G Garage during the summer. I drive a mix of highway/city with a one way commute of ~35 miles.

On the highway, I have gotten up to 33-34mpg per the Instant MPG on a 150 mile trip. However, with 3000+ miles on the MID, my average shows 24mpg while the Instant screen shows 25-26. I figure that is close to the actual figure I am getting. I'm happy with it.

 

I use actual gallons of fuel consumed (full tank to full tank) and divide that by miles travelled. the MID is a joke.

but driving cruise control at 70mph I am able to get 34mpg (95% highway)