Poor fuel efficiency?

kenchan · 08-14-2012, 02:44 PM

car eats a lot when new.

UNKNOWN_370 · 08-14-2012, 04:49 PM

Quote:

Originally Posted by kenchan

car eats a lot when new.

Ubetit · 08-15-2012, 09:17 AM

Spent the last 256 miles trying to see what mpg i could get driving like my mother. I'm at 25.4 in 61% highway driving (yes, I calculated that too)

2012-370Z · 08-16-2012, 09:08 PM

Thanks to those of you who have provided constructive suggestions or information. It's not that I'm so concerned with the mpg that I'm not enjoying the car, the car is awesome! I just have a reasonable concern based on a reasonable expectation set by the manufacturer and their estimates. Clearly other people have the same concern otherwise they wouldn't be responding with their results or tracking their mpg. That being said, I do believe it has some to do with the break-in period. The onboard computer is now showing 18.3 after about 1,300 miles of 70% city/30% highway.

brucelidat · 08-16-2012, 09:27 PM

the onboard computer isn't always so accurate. I usually calculate my mileage myself based off of gallons pumped and miles travelled since last fill-up. Some times it's spot on but more often than not, it skews high .5-1 mpg for me. I still get 20-22 in mixed driving based off of my own calculations though.

Bandit_Kaine · 08-16-2012, 10:07 PM

I get about 13.4 mpg.

Guess that means i should slow down.

chrischhorn · 08-17-2012, 01:36 PM

Quote:

Originally Posted by 2012-370Z

Thanks to those of you who have provided constructive suggestions or information. It's not that I'm so concerned with the mpg that I'm not enjoying the car, the car is awesome! I just have a reasonable concern based on a reasonable expectation set by the manufacturer and their estimates. Clearly other people have the same concern otherwise they wouldn't be responding with their results or tracking their mpg. That being said, I do believe it has some to do with the break-in period. The onboard computer is now showing 18.3 after about 1,300 miles of 70% city/30% highway.

Their tests are basically done with no factors. No hills, no wind resistance, and no tire resistance. Basically they drive it on a Dyno and those are their numbers. If you live in a hilly area, your gas mileage will be lower then us that live in flat areas. This also has to do with lack of torque and needing to rev a little more since the cars stutter a bit under 2500 so its hard to granny shift as it is lol.

onzedge · 12-23-2014, 08:42 AM

Quote:

Originally Posted by Mt Tam I am

I too once got 17.4 during break in. I have never seen that high mileage again driving the same roads since. If you want good gas mileage, I think you should have reconsidered the purchase. But you will have a good time.

08-16-2012, 09:27 PM	#35 (permalink)
brucelidat A True Z Fanatic Join Date: Jun 2011 Location: temple city, ca Posts: 2,432 Drives: 2011 370z 7AT GM Sp Rep Power: 31	the onboard computer isn't always so accurate. I usually calculate my mileage myself based off of gallons pumped and miles travelled since last fill-up. Some times it's spot on but more often than not, it skews high .5-1 mpg for me. I still get 20-22 in mixed driving based off of my own calculations though. __________________ Works Emotion CR Ultimate - FI CBE w/ 18" resonators - Ecutek - eibach sways - Quaife - FI LTH w/race cats - kw v3 - spl - Topgunz SC - 488whp 398trq

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08-14-2012, 02:44 PM	#31 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	car eats a lot when new.

08-15-2012, 09:17 AM	#33 (permalink)
Ubetit Track Member Join Date: May 2012 Location: Ohio Posts: 527 Drives: the women lazy Rep Power: 14	Spent the last 256 miles trying to see what mpg i could get driving like my mother. I'm at 25.4 in 61% highway driving (yes, I calculated that too)

08-16-2012, 09:08 PM	#34 (permalink)
2012-370Z Base Member Join Date: Aug 2012 Location: Indianapolis Posts: 20 Drives: 2012 Red 370Z Rep Power: 13	Thanks to those of you who have provided constructive suggestions or information. It's not that I'm so concerned with the mpg that I'm not enjoying the car, the car is awesome! I just have a reasonable concern based on a reasonable expectation set by the manufacturer and their estimates. Clearly other people have the same concern otherwise they wouldn't be responding with their results or tracking their mpg. That being said, I do believe it has some to do with the break-in period. The onboard computer is now showing 18.3 after about 1,300 miles of 70% city/30% highway.

08-16-2012, 10:07 PM	#36 (permalink)
Bandit_Kaine Base Member Join Date: Jun 2012 Location: Miami Age: 34 Posts: 224 Drives: 16-370Z Nismo-PW-MT Rep Power: 13	I get about 13.4 mpg. Guess that means i should slow down.