Average MPG?
Le Mans Master
Joined: Oct 2005
Posts: 6,652
Likes: 2,106
From: Left Coast, San Diego
Forget what the computer says you are "getting" as you drive. Your overall MPG that you get for a complete tank is what counts. From Chicago to San Diego, in flat Nebraska, I averaged 27.5 & 27.5 MPG for two tanks. For the full trip I averaged 25.8 in my 2010 base. My DIC is .2 MPG higher than an actual calculator. My numbers are from the calculator.
Last edited by Vet Interested; Dec 8, 2014 at 09:56 PM.
Race Director
Joined: Oct 2005
Posts: 14,999
Likes: 200
From: Bay Area Ca.
Le Mans Master
Joined: May 2005
Posts: 6,656
Likes: 823
From: FORT LAUDERDALE FL
Racer
Joined: Oct 2013
Posts: 420
Likes: 63
From: Earth
Bought my 2005 in October '13 with 56,800. Base coupe with 6-spd.
Since then I've driven 4863 miles on 328.5 gallons. Average MPG = 14.8. Pretty dismal but I only drive 3.6 miles to work and back each day so I get what I get.
On the highway though, I've gotten up to 27.3 (384 miles) driving from L.A to S.F. I should have tried going a lot farther but it was my first long trip and I really didn't want to drive through the Bay Area with a very low tank.
Since then I've driven 4863 miles on 328.5 gallons. Average MPG = 14.8. Pretty dismal but I only drive 3.6 miles to work and back each day so I get what I get.
On the highway though, I've gotten up to 27.3 (384 miles) driving from L.A to S.F. I should have tried going a lot farther but it was my first long trip and I really didn't want to drive through the Bay Area with a very low tank.
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Race Director
Joined: Oct 2005
Posts: 14,999
Likes: 200
From: Bay Area Ca.
Bought my 2005 in October '13 with 56,800. Base coupe with 6-spd.
Since then I've driven 4863 miles on 328.5 gallons. Average MPG = 14.8. Pretty dismal but I only drive 3.6 miles to work and back each day so I get what I get.
On the highway though, I've gotten up to 27.3 (384 miles) driving from L.A to S.F. I should have tried going a lot farther but it was my first long trip and I really didn't want to drive through the Bay Area with a very low tank.
Since then I've driven 4863 miles on 328.5 gallons. Average MPG = 14.8. Pretty dismal but I only drive 3.6 miles to work and back each day so I get what I get.
On the highway though, I've gotten up to 27.3 (384 miles) driving from L.A to S.F. I should have tried going a lot farther but it was my first long trip and I really didn't want to drive through the Bay Area with a very low tank.
Burning Brakes
Joined: Aug 2013
Posts: 1,025
Likes: 68
From: Waverly Tennessee
According to Fuelly (Check it out, free service, not a vendor, I have no affiliation: www.fuelly.com/) my last five fill ups were 19.7, 18.5, 20.3, 19.2, 19.0 mpg.
Racer
Joined: Oct 2013
Posts: 420
Likes: 63
From: Earth
You would think. Return trip had me fill up in 315 miles at 25.2 MPG. That was during the heat wave we had and it was over 100 degrees along part of the journey down the I-5.
A few days after getting home and driving around a bit, I filled up in 347 miles at 26.5 MPG.
The entire trip (plus the few days driving around Monterey, Carmel, SF and back home) was 1046 miles at 26.3 MPG.
A few days after getting home and driving around a bit, I filled up in 347 miles at 26.5 MPG.
The entire trip (plus the few days driving around Monterey, Carmel, SF and back home) was 1046 miles at 26.3 MPG.
Drifting
Joined: Apr 2000
Posts: 1,655
Likes: 15
From: Jeffersonville In
Cruise-In I Veteran
Cruise-In II Veteran
Cruise-In III Veteran
Vert vs coupe?
In driving from Louisville to Bowling Green and back with a group of five, All running 73-75mph. Verts 25-26. coups 26-29. Sticks about 1 mpg better. Seems the coups are a little slicker aero and get slightly better mph.
Melting Slicks
Joined: Aug 2006
Posts: 2,409
Likes: 129
From: Fairview Heights IL
From another post earlier this year:
Well I just completed my first road trip for Fathers Day, six days, 1951 miles to NC from WI...golfed my way down and then for four days with my son...may be my best Fathers Day ever!
These are the things that stood out:
Even with the Edelbrock SC installed this past winter and now 500/500 when I step on it:
* First tank with Ethanol all interstate 29.6 MPG
* Second tank no Ethanol all interstate 32.4 MPG
* The next two same...32+ MPG
* 13 hour drive straight home
* Borla S Type II are just enough...no drone on interstate...but it ain't no company car cruising down the road.
I literally could have driven the 900 or so miles on two tanks...ridiculous! AC was on all the time and saw no effect on the mpg.
2000 rpm @ 80 mph....sick!
Well I just completed my first road trip for Fathers Day, six days, 1951 miles to NC from WI...golfed my way down and then for four days with my son...may be my best Fathers Day ever!
These are the things that stood out:
Even with the Edelbrock SC installed this past winter and now 500/500 when I step on it:
* First tank with Ethanol all interstate 29.6 MPG
* Second tank no Ethanol all interstate 32.4 MPG
* The next two same...32+ MPG
* 13 hour drive straight home
* Borla S Type II are just enough...no drone on interstate...but it ain't no company car cruising down the road.
I literally could have driven the 900 or so miles on two tanks...ridiculous! AC was on all the time and saw no effect on the mpg.
2000 rpm @ 80 mph....sick!
Racer
Joined: Nov 2013
Posts: 431
Likes: 1
From: Oconomowoc Wisconsin
Red is an '07 A6 vert with stock 2.56:1 rear and stock exhaust. It also has an Edelbrock E-Force 1593 supercharger installed & tuned by Chuck Mosello at Corvettes of Westchester. On the 1,000+ mile drive back to StLouis after the install Red averaged 37.7 mpg with the cruise set to 75-80. Commuting 15 miles to/from work I typically get 22-23 mpg. Chuck told me he's not surprised, that the E-Force really helps the LS2 "breath".
I was shocked as I had the Vette pretty loaded with clubs and luggage and a big slushy for the road trip and I have the Z51 M6 and didn't realize it supposedly still pulls a little higher RPM in 6th...hell at 80 MPH I'm at 2K how much lower should it be!I also was surprised because before I put on the SC I read about parasitic loss is always there, etc. so I really thought my DIC was misbehaving
...and had to double check the math by hand when I filled up for the second tank.Amazing isn't it...best of both worlds and I was only looking for one...
Drifting
Joined: Mar 2013
Posts: 1,705
Likes: 539
From: Hampton VA
I averaged 27.8 on a trip from Hampton VA to Charlottesville VA and back. The trip there was mostly on back country roads then some driving in Charlottesville and home mostly interstate. With a group of 23 other Corvettes going and solo on the way back. I have seen as high as 34 on stretch of interstate 2008 auto 2.56 axle ratio
Racer
Joined: Apr 2008
Posts: 347
Likes: 0
From: Chantilly VA
I actually have seen 30.4 on mine on cruise at 70-72 mph on a 6 hour trip with the original goodyear tires. I put new Michelin run flats on it and now don't get but around 28 miles per gallon. Must be a different circumference. Don't know!
Burning Brakes
Joined: Jul 2011
Posts: 1,168
Likes: 2
From: Saint Johns Florida
My mileage dropped when I switched to Michelins, but the wet traction was so bad on the stock tires I will not go back.. But since I have switch to Bridgestones and my mileage is back up and the wet traction is even better than the Michelins.