I would like to look into this for you with your case number. Please feel free to contact me privately for more assistance. Thank you, and I look forward to hearing from you.AB said:I am new to this forum as of today, and I sought it out precisely because of my issues with fuel economy, so Doug's post is very topical. I own a 2011 Terrain, 4cyl, FWD, epa estimates 22mpg city/32 mpg hwy. We have owned this for over one year and do not see anything close to this. We mainly do city driving (Chicago), and we get between 13-15 mpg. Horrible. We have brought it back to dealer several times, and contacted GMC customer assistance, only to be told that there was nothing warranty serviceable that could be found on their diagnostics and the whole line about how different driving conditions will affect our fuel economy. Our avg MPH according to the vehicles computer is about 12-13 mph, and one dealer mechanic told us we'd need to drive faster. I don't know how that's possible in Chicago. Anyway, is anyone else getting these miserable numbers with city driving?
Don't hesitate-------------run from the Nox & Terrain.Old Lar said:There are several threads about poor gas mileage with the DI 4 cylinder engines in the Equinox and Terrain. Few, if any, have found any dealer fixes that improved the mpg in their cars. Other threads have not found mpg issues with the same engine. From an outsiders point of view (I got on the forum to research the cars as a replacement), I am hesitating at purchasing the car/engine because of the mpg issue.
So what do you suppose GM changed between the 2011 and 2012? Does anyone know if there were any major changes?wrusprod said:So Far, what I have seen on this forum, folks with the 2012 I-4 have been getting some pretty good numbers (MPG) at least more in the range of what its rated..and better..(compared to what I got on my 2011 AWD I-4)
As far as my 2012 AWD V6..Im happy with my MPG..18-19...which is also in line with what they say its rated..
Hopefully the I-4 engine issues of 2011 are related to that year only!..
Must be because of the different sheet metal, because it is the only difference. I believe the rest is identical !Doug said:F Wow what a difference in the Terrain and Nox. The Terrain is quieter and drives better also more confortable.
I'm averaging 24.5 MPG with just over 400 miles on my car. If that's without the engine broken in, I can't wait to see what I get when it is and mine is probably 50/50 city/highway.JTNJ said:@XUOHTX are you driving Fwd or Awd?,what size tires?
2WD 17" wheels.JTNJ said:@XUOHTX are you driving Fwd or Awd?,what size tires?
Which brings up another question, do you think it would be possible that any of the late 2011 models got 2012 engines.wrusprod said:Issues with the 2011 was a stock of bad parts...JMO...
The engines are different, because as TedReminder said, the compression is lower, and the engine has a different Engine number..So seems they are different..