Miles Per Gallon Feedback
#1442
Registered Member
My car has been getting worse mileage since the transmission fluid was changed. I don''t believe the Infiniti store used factory stuff. I think they might not have used LV either. It has been really hot lately and I have been using the A/C often. Getting more like 20 lately.
#1443
Registered Member
Bone stock 2010 G37 Journey
Lucky that I have an against traffic commute so I get to drive 75 mph for 19 of my 22 mile commute to and from work.
That really high mpg datapoint around April 2017 was a spring break road trip to Florida.
Lucky that I have an against traffic commute so I get to drive 75 mph for 19 of my 22 mile commute to and from work.
That really high mpg datapoint around April 2017 was a spring break road trip to Florida.
#1445
Historically, our G37S 7AT has never really returned fantastic mileage. However, nor does it drop as precipitously when I hammer on it, as with previous cars. It's normally driven strictly around town, with much less freeway use these days. If I really drive mellow, I can get it stick around 19mpg. This is here in Cali, with our 91-octane **** fuel.
When I drive really hard, it drops to a fairly consistent 15-16. Pretty decent.
When I drive really hard, it drops to a fairly consistent 15-16. Pretty decent.
#1446
Registered User
My car has been getting worse mileage since the transmission fluid was changed. I don''t believe the Infiniti store used factory stuff. I think they might not have used LV either. It has been really hot lately and I have been using the A/C often. Getting more like 20 lately.
#1447
Registered Member
I've only had my car since January (6mt sedan) but was really surprised with my most recent fill up. I got just under 28.5 mpg calculated manually, the computer was showing 28.4. It was a primarily highway trip to visit a buddy to go fishing for the weekend. It was just me in the car with two coolers, a couple rods and a weekend bag. AC was on for 90+% of the trip and temps were low to mid-80's. Total covered was 502 miles for 17.62 gallons.
For reference, I average about 22mpg all the time with my normal driving mix. On a couple fill ups I've gotten around 25 for tanks that were more heavily highway.
For reference, I average about 22mpg all the time with my normal driving mix. On a couple fill ups I've gotten around 25 for tanks that were more heavily highway.
#1448
Registered Member
I've only had my car since January (6mt sedan) but was really surprised with my most recent fill up. I got just under 28.5 mpg calculated manually, the computer was showing 28.4. It was a primarily highway trip to visit a buddy to go fishing for the weekend. It was just me in the car with two coolers, a couple rods and a weekend bag. AC was on for 90+% of the trip and temps were low to mid-80's. Total covered was 502 miles for 17.62 gallons.
For reference, I average about 22mpg all the time with my normal driving mix. On a couple fill ups I've gotten around 25 for tanks that were more heavily highway.
For reference, I average about 22mpg all the time with my normal driving mix. On a couple fill ups I've gotten around 25 for tanks that were more heavily highway.
#1449
Registered User
Join Date: Jul 2017
Location: Houston, Texas->Nashville,Tennessee
Posts: 24
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Been driving my 2012 G37 Journey for 16 months now. Averaged 27.5 on a 400 mile highway trip cruise control set to about 75 mph. Almost all flat and back in Houston's "Spring", but about 400 lbs of people/stuff so pretty good. For the Summer been doing 70/30 city/highway and hovering around 20 with an average foot and the occasional "slip" (AC isn't not an option during Houston summers). Computer is impressively precise...always within .2 of actual mpg.
Last edited by Man; 07-30-2017 at 03:07 AM.
#1451
My 2012 G37xS coupe
Mixed of highway and street driving gets about 19-20 mpg.
Highway road trips get about 27 mpg.
Street driving mostly gets about 15-17 mpg.
Mixed of highway and street driving gets about 19-20 mpg.
Highway road trips get about 27 mpg.
Street driving mostly gets about 15-17 mpg.
#1452
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Join Date: Jul 2017
Location: Houston, Texas->Nashville,Tennessee
Posts: 24
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Just filled up my 2012 Journey
286 miles (about 200 city/rest hwy) 15.2 gallons premium fuel coming out to 18.8 mpg, computer telling me 19.0
Can anyone tell me if it's worth filling premium? I've always used it with the G but the difference is starting to creep back up.
286 miles (about 200 city/rest hwy) 15.2 gallons premium fuel coming out to 18.8 mpg, computer telling me 19.0
Can anyone tell me if it's worth filling premium? I've always used it with the G but the difference is starting to creep back up.
#1453
Registered User
Looks like the FE gauge in the cluster has been consistently about 10% low. That sucks... that means I'm lucky to break 19 MPG. In my Z I was able to do about 20 MPG on the same commute... I suppose that's a fair tradeoff for 50HP and 500 more lbs.
#1454
I typically run my tank to near E and fill up about 18 gallons.
Before tune, I used to get about 18 MPG.
After ecutek and ark I'm getting about 12 MPG.
How normal is this? I'm getting like 200 per fill up. I do 85% city driving. My driving habits have not changed that much since tune. I thought it was me at first, but I've been keeping notice for over a month now.
Before tune, I used to get about 18 MPG.
After ecutek and ark I'm getting about 12 MPG.
How normal is this? I'm getting like 200 per fill up. I do 85% city driving. My driving habits have not changed that much since tune. I thought it was me at first, but I've been keeping notice for over a month now.
#1455
Registered Member
All I do is city driving, here in Chicago. No freeway at all. All local streets, about 75 miles a week.
I did an experiment - half a tank of gas driving slowly, never above 3,000 RPM on accelerating from a stop. Got 12 MPG.
Then, half a tank driving calmly but using DS mode, often accelerating very briskly away from stops, etc. Having some fun, at least as much fun as you can have driving around on city streets- I mostly drive at night when streets are not very crowded.
So, this second tank of gas: 12 MPG. No difference at all.
I think I should be getting better mileage, though. A little bit better- 14? 15?
2013 G37x 4dr has 41k on it, I got it with 38k last fall. I have yet to replace plugs or air cleaner filters. That might help.
I did an experiment - half a tank of gas driving slowly, never above 3,000 RPM on accelerating from a stop. Got 12 MPG.
Then, half a tank driving calmly but using DS mode, often accelerating very briskly away from stops, etc. Having some fun, at least as much fun as you can have driving around on city streets- I mostly drive at night when streets are not very crowded.
So, this second tank of gas: 12 MPG. No difference at all.
I think I should be getting better mileage, though. A little bit better- 14? 15?
2013 G37x 4dr has 41k on it, I got it with 38k last fall. I have yet to replace plugs or air cleaner filters. That might help.