[Finch]

Before you shoot me down for not searching, I did a search and can't seem to fnd the answer to this.

Can you display the current MPG on the EVIC or Navigator while the car is moving? If so, is it the MPG since the TRIP was set or is it current MPG?

New owner would appreciate some help ;-)

 

[Model 57]

OK, shoot me if I'm wrong here; I think that the MPG in the EVIC is only the average since it was last reset. And mine seems to take the last reading before reset as a starting point.

 

[GoofyTimL]

My evaluation that is is the average since last reset of "all" If you're reseting only Trip A or Trip B, then it might start where the last mini-reset left off. I have not been able to find an "MPG now" kind of setting... sure would like one... my '94 T&C van has that feature.

I think it would give an indication of when the MSD kicks on and off (at least that's what I think)... and you could "work" it that way if you really were trying to stretch the mileage... but then maybe that's why they decided to leave it out of the options. Would be too complicated (high values for when the MSD in "on" and mediocre when all 8 cylinders are hitting) for the casual observer I suppose... but WE WANT TO KNOW!

 

[jmk]

MPG is an average, but not sure over what. I have watched my "aggressive" driving quickly drop the MPG readout, so it must be averaged over a relatively recent number of miles. If it was an average over the number of miles since last reset, then after the number of miles accumulates, any immediate changes in MPG would have a much smaller effect.

 

[kevenj]

Can you display the current MPG on the EVIC or Navigator while the car is moving? If so, is it the MPG since the TRIP was set or is it current MPG?

You can display this while driving; on the right side of the steering wheel, push the top of the inside button, that's the "menu" button. Then use the outside button on the left side (the the up and down arrow) to scroll til you see "MPG".... it will stay displayed and show you the average MPG since you last reset it. Hit the bottom part of the right inside button (has the letter "N" and an arrow) to go back to compass & temp.

MPG is an average, but not sure over what. I have watched my "aggressive" driving quickly drop the MPG readout, so it must be averaged over a relatively recent number of miles. If it was an average over the number of miles since last reset, then after the number of miles accumulates, any immediate changes in MPG would have a much smaller effect.

That is the average since you last reset the MPG calculater, regardless of whether or not you reset the trip meters. Your aggresive driving will make it change drastically if you have reset it fairly recently. If it's been several hundred miles since you reset it you will not notice any drastic changes in the readout even if you do some full throttle "merges" or passing maneuvers since the MPG is averaged over a lot more miles.

 

[DESIREE]

It's an average since last reset.
Try hitting the reset at 60 MPH in overdrive on a road where the MDS stays engaged. Give it a few miles to stablize and see 30+ MPG!
Interestingly, I've driven some Sebring loaners during warranty service, which have both average and realtime MPG available on the display. 5 MPG during first gear WOT is a bit depressing, but 99 MPG going downhill with the throttle closed can be exciting.

 

[C-Man]

From my observance, it is not an average from the last reset. I think it is a running 100 or 200 miles average. This is why I think the mpg from a tank of gas does not match up with the EVIC display.

 

[Jazzhead]

Even if a "real time" MPG isn't possible, I wish the dash would at least indicate when the MDS was engaged. I understand that GM's MDS system let's the driver know when the engine's working on four cylinders. I think that's helpful info.

 

[DESIREE]

From my observance, it is not an average from the last reset. I think it is a running 100 or 200 miles average. This is why I think the mpg from a tank of gas does not match up with the EVIC display.

EH!? My observation, after filling the tank and resetting ALL, is that as I pull out of the gas station I'm seeing 5-6 MPG, and by the time I get home (3 miles, 3 traffic lights and 1/2 mile hill, with about a 1/4 mile with my MDS LED on)it has come up to about 15 MPG. My conclusion is that once you hit the reset everything starts from zero.

 

[crhemi]

Desiree is right.
I reset every fill up and calclate at every fill up, then compare with EVIC, its been right on to maybe 2-3 mph off (i've been doing this since I got the car)
BTW since I installed my Magnaflows I've seen about 20 mre mph each tank!
I'm seeing city/town about 15mph and highway 24-28 (depending on cruising speed 60, 80 etc.

 

[magnuman]

Jazzhead,
You can do the MDS "ON" indicator light mod. so you can see when it is on>
http://www.lxforums.com/board/showthread.php?t=11575

 

[GoofyTimL]

Likewise, I've found the MPG (not MPH) indicator generally to be within 1-2 mpG of the EVIC value. I've calculated for each tank in our two months of ownership. We are getting 15-17 "around town" and 24-25 on "the road." Running either 87 or 89 octane fuel... haven't really seen a difference between the two (currently running third tank of 89).