ECO mode really does make a difference
Team Owner
Joined: Dec 2003
Posts: 57,408
Likes: 164
From: queensbury ny
I haven't taken it out of eco mode since I found out what it does.lol.My drive to work is about 40 miles one way on the highway and the thing reading 37mpg's,32 mpg's etc is pretty cool.I do notice the difference if i hit the gas gradually though.
Drifting
Joined: Aug 2015
Posts: 1,434
Likes: 183
From: Maple Ontario
Skip shift is active in all modes, but it seems to be less aggressive in Sport than Tour, and less aggressive still in Track. This isn't documented anywhere that I've found, but when I installed the skip shift eliminator I had to go into tour mode to get the warning message to come on with any frequency. But it will show up, sometimes, even in Track mode.
I suppose the other question to ask... is V4 mode more aggressive in ECO mode with the CRUISE control on. I would expect that this "should" be true since cruise mode tries to maintain speed and you don't need particually large throttle inputs so you can encourage V4 mode.
Not that we care about fuel economy that much but my C6 A6 can consistently get 7.6 L/100 KM ( close to 38MPG Imp Gallon ) so it's more about the driver than anything else... one mash on the throttle can wipe out an hour of careful driving... at least on the running average.
Safety Car
Joined: Sep 2008
Posts: 4,296
Likes: 156
From: Location: Location: kAnSaS
gonna be some computer individual "CELL" adjustments in eco mode I'm sure. which of course is the way it would be in all modes. Not to mention steering and shift changes. I would assume in all modes under cruise speed or cruise control the engine goes to V4 which certainly helps fuel economy.
Funny the numbers for MPG aren't quite abit different then the C6 with just the V4 solenoids kicking in? I would think that would get a guy 4-6mpg if on a long constant trip? has that been guys response? thxs paul
Funny the numbers for MPG aren't quite abit different then the C6 with just the V4 solenoids kicking in? I would think that would get a guy 4-6mpg if on a long constant trip? has that been guys response? thxs paul
Team Owner
Joined: Sep 1999
Posts: 41,732
Likes: 1,718
From: Springfield MO
gonna be some computer individual "CELL" adjustments in eco mode I'm sure. which of course is the way it would be in all modes. Not to mention steering and shift changes. I would assume in all modes under cruise speed or cruise control the engine goes to V4 which certainly helps fuel economy.
Funny the numbers for MPG aren't quite abit different then the C6 with just the V4 solenoids kicking in? I would think that would get a guy 4-6mpg if on a long constant trip? has that been guys response? thxs paul
Funny the numbers for MPG aren't quite abit different then the C6 with just the V4 solenoids kicking in? I would think that would get a guy 4-6mpg if on a long constant trip? has that been guys response? thxs paul
Typically, base C6's with LS3's, get around the same MPG, to 2-3 MPG better gas mileage than I do in my Z06, on our road trips.
Drifting
Joined: Aug 2015
Posts: 1,434
Likes: 183
From: Maple Ontario
Tadge mentioned in a video that the EPA fuel Economy number was performed... NOT in ECO mode... so your vette will actually do much better than the EPA posted hwy number....
I wonder why EPA wouldn't let GM do this... appparently the guy who does the certifications drives the cars very very carfully to achieve the highest numbers....
I wonder why EPA wouldn't let GM do this... appparently the guy who does the certifications drives the cars very very carfully to achieve the highest numbers....
Safety Car
Joined: Jan 2015
Posts: 3,941
Likes: 499
From: Northern Virginia
Tadge mentioned in a video that the EPA fuel Economy number was performed... NOT in ECO mode... so your vette will actually do much better than the EPA posted hwy number....
I wonder why EPA wouldn't let GM do this... appparently the guy who does the certifications drives the cars very very carfully to achieve the highest numbers....
I wonder why EPA wouldn't let GM do this... appparently the guy who does the certifications drives the cars very very carfully to achieve the highest numbers....
https://www.fueleconomy.gov/feg/fe_test_schedules.shtml
Both the city and highway cycles are based on Los Angeles traffic from 30 or more years ago. So the city cycle has too much highway, and the highway cycle has too much stop and go.
As for why the EPA doesn't allow the test to be done in ECO mode, my guess is because there's no way to ensure that real world drivers will use ECO mode.
Without it, we might all be paying a gas guzzler tax on our C7s.
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Drifting
Joined: Sep 2014
Posts: 1,254
Likes: 113
From: Bellevue WA
I was pretty sure that for the manual's the EPA included the shift from 1st to 4th option in their estimates back for the C5. That could be overridden also by simply accelerating quickly. Maybe because ECO isn't the default and skip shifting is?
Drifting
Joined: Aug 2015
Posts: 1,434
Likes: 183
From: Maple Ontario
There's no "guy who does the certification drives." It's all computer controlled and run on a dyno. Not only are speeds mandated, but so are rates of acceleration and time at each speed. The main reason the EPA highway numbers are as high as they are is that there's almost no high speed driving on the highway test. The top speed is about 60, which is reached only very briefly. The average speed is only 48 mph.
https://www.fueleconomy.gov/feg/fe_test_schedules.shtml
Both the city and highway cycles are based on Los Angeles traffic from 30 or more years ago. So the city cycle has too much highway, and the highway cycle has too much stop and go.
As for why the EPA doesn't allow the test to be done in ECO mode, my guess is because there's no way to ensure that real world drivers will use ECO mode.
Without it, we might all be paying a gas guzzler tax on our C7s.
https://www.fueleconomy.gov/feg/fe_test_schedules.shtml
Both the city and highway cycles are based on Los Angeles traffic from 30 or more years ago. So the city cycle has too much highway, and the highway cycle has too much stop and go.
As for why the EPA doesn't allow the test to be done in ECO mode, my guess is because there's no way to ensure that real world drivers will use ECO mode.
Without it, we might all be paying a gas guzzler tax on our C7s.
Not that we should care... it hasn't been a gas guzzer since the C3.