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GMC Acadia Real World MPG

63 messages,  Last post on Nov 23, 2009 at 8:41 AM

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#6 of 63 Gas mileage by donl1 May 12, 2007 (9:52 am)
Replying to: lukesdaddy (May 13, 2007 5:42 am) I've only got 1200 miles on my AWD Acadia but I doubt if you'll see 20 mpg with a 50/50 mix of driving. It takes gas to drag around two and a half tons. My last couple of tanks have been 18 to 20 with mostly highway and an average of 35 to 39 mph. My 2 cents.
#7 of 63 Gas Mileage by mick13 May 17, 2007 (10:26 am)
bought an 07' SLE 2-wd. MPG is nowhere close to EPA estimates on sticker. Wifes car, she drives conservatively and commutes 25 miles per day round trip to work. Occassional errand running on weekends. The car basically sits Mon-Fri except for work commute to/from. Have had since Late Feb, early March, MPG as averaged 18-19. Comment to dealer spurred a response about the transmission needing to be broken in, or reach some type of mileage level before optimal performance begins. I've never heard of this, then again I'm not a professional auto engineer.
#8 of 63 Re: Gas mileage experiance? [lukesdaddy] by jbiedermann1 May 19, 2007 (4:27 am)
Replying to: lukesdaddy (May 12, 2007 4:47 am) I love the Acadia except for the poor gas mileage. I have not taken it back to the dealer concerning this issue; but will at the first maintenance period. My real world experience in the city (Houston) has been 12 MPG 100% city and I am not an aggressive driver. If I am on the highway 100% I can get 21-21.5. I would love to hear if there is anything that can be done to correct this problem. I have heard all the chat about mileage will improve after the break in period; but that is only after 500 miles, also have heard about reprogramming the transmission? I never would have thought mileage would vary by 30+% from the sticker? The V8 in my GMC Yukon gets the same to slightly better mileage in the City. Go figure Replies to this message: jseck2 (May 20, 2007 4:01 pm) nxs138 (May 24, 2007 5:20 pm)
#9 of 63 Re: Gas mileage experiance? [jbiedermann1] by jseck2 May 20, 2007 (4:01 pm)
Replying to: jbiedermann1 (May 19, 2007 4:27 am) It's almost impossible to get the EPA numbers. They are stated to be "for comparison purposes only". The test standard changes this year for 2008 vehicles based on a more realistic driving conditions and in general, almost all vehicles will drop by 2 to 3 mpg (much more for hybrids). The current system uses a highway speed of 55 mph. Modern speed limits are generally 60-75 mph, so we're driving much faster than what the standard is based on. Aerodynamic drag is the primary factor in highway mpg and it plays a much bigger part at higher speeds. There was an article a few weeks ago about a guy who drove the length of the Jersey Turnpike (or Garden State Pkwy, I don't remember) at 45 mph in a Camry and got almost 60 mpg! So if you want the highway numbers, you have to slow down to 55 or less. (Yea right!)
#10 of 63 Re: Gas mileage experiance? [jbiedermann1] by nxs138 May 24, 2007 (5:20 pm)
Replying to: jbiedermann1 (May 19, 2007 4:27 am) After perusing many Acadia forums, it seems like you'll be out of luck on city mileage: the Acadia is a heavy car, and city driving will kill the mileage. For pure city driving, people are reporting no higher than about 14 or 15 with FWD. Where it shines is on the highway.   Makes me wonder if a V8 would be more appropriate for this car: more power, and maybe similar gas mileage (for example, the 5.3L V8 Tahoe gets 16 city and 22 hwy, for a vehicle that weights about 550 lbs more than the Acadia).
#11 of 63 Re: Gas mileage experiance? [lukesdaddy] by mamabink Jun 11, 2007 (5:43 pm)
Replying to: lukesdaddy (May 12, 2007 4:47 am) I just bought a 2007 Arcadia one month ago, mine is a 2 wheel drive also. I am so disappointed in the gas mileage. I once got 19 miles to gallon on the highway, but it usually is 16.5 highway and 13 in the city. The sticker stated 20-26 miles to gallon, even the comercials focus on the "great" gas mileage. I am so disappointed.
#12 of 63 2 tanks so far... by therogue Jun 16, 2007 (6:29 am)
FWD SLT2   One was pretty much city driving....   about 16mpg; averaging 20mph   One was pretty much 70/30 hwy/city   about 21mpg; averaging 40mph.   VERYYY happy so far!!   TR
#13 of 63 Gas mileage by donl1 Jun 16, 2007 (9:59 am)
I hit 5000 miles on my AWD Acadia recently and with mostly highway driving I rarely see 20 mpg. Disappointed in mileage and power. Previuosly had a 06' 300C AWD and it got better mileage and the power was out of this world compared to the Acadia.
#14 of 63 Road Trip Gas Mileage Report SLT1 FWD by jlaszlo Jun 18, 2007 (9:38 am)
Just got back from a weekend trip to Mobile, AL from Atlanta. The trip is about 350 miles one-way. I reset the mpg computer when I got on the freeway early Saturday morning. With the AC turned off most of the morning I got 26-27 mpg travelling between 65 and 75 mph. The combination of turning the AC on and one scheduled stop lowered the trip mileage to Mobile to 26mpg exactly when I got off the freeway.   On the way back I got a later start so the AC was on all the way and I was carrying a medium sized freezer. With one scheduled stop, and some stop-and-go traffic in Montgomery, I still got 25.5 mpg (I again reset the computer when I got on the freeway in Mobile).   A few notes...I was solo on the trip so there was no extra passenger weight and I have inflated my cold tires to 37psi. In 100 degree heat the highest it got was 41psi. I used cruise control when possible but the hills caused the transmission to downshift, I felt, too aggressively so I took over whenever necessary.   In conclusion, under the right conditions, the EPA highway estimate is attainable with not too docile driving.

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