2014 370z Sport only 11 mpg
 

Hi guys, I am driving a 2014 370z Auto with Sport package, the car now has 1600 miles, I'm driving the car daily pure local with a lot of stops, I'm not pushing the car so hard, it usually shift around 3-4k rpm, shift at 7500 rpm for a couple times maybe. I just filled my tank yesterday and it was 13.082 gal and it ran 142.5 miles. so it has only 10.89 MPG...not even 11......I'm wondering if this is normal? should I drive to the dealer and ask them to check? Please advise:bowdown: thanks a lot.

i would try driving on hwy at 50-55mph constant for 10-20miles to see how the mpg is affected. if it still doesnt improve i would say take your car to the dealer.

chances are, you're a tad heavy foot and just enjoying your new car while the car is breaking in.

Not normal at all. I wouldn't go to the dealer just yet though. Give it a few more tanks so you can get an average.

have you been resetting your mpg at each refill? if not you will get a running total versus each tank mpg and that will be way off. plus if you do a bunch of city driving at low miles it will be low as well. go take a long drive on the highway like suggested.

Use the display for average fuel economy too. Compare that to what your tank fill technique is telling you.

I was driving like an old lady for the first 1200 miles, I thought only the first 1200 miles are the break in period? BTW, the computer says the average speed is like 16 mph, too slow?

1200 miles is the break in period, but the motor will continue to break in for some time. 16 mph average is very low. If all you do is drive in traffic, mpg will be low. Give it a few more tanks and keep track. It'll get better.

:icon18:

depends on how long you are idling for at stoplights, traffic, how heavy your foot is, your shifting patter as far as how long you linger in a gear at medium revs. That is actually how you should be calculating your mpg. I drove from palmdale, ca to las vegas, nv in Jan. I filled up and drove up hwy14 to the 15. I avg'd 28mpg up and 26.5 on the way back. Had I not drove around in Vegas I would have gotten approx 520miles on a tank and had almost half a tank left. Hope this puts it into perspective.

the 10.89 is not the number showed on the computer, it is mileage last tank / gas filled this time. the computer showed 15 mpg, but i never reset it since I bought the car. I just reset the MPG this time after I filled the tank, and now it shows 13.8 MPG / 14 MPH

It's probably a combination of things. You're driving in low gears at medium rpm, lots of stop and go, a new car breaking in, etc. Make sure your tires are inflated enough. Try shifting under 3k rpm.

This thread is a downer. Here I am just sitting here waiting for snow to melt so I can get the best 6mpg of my life while I try and get my fix before the next snowfall.

*shoulda bought a prius* lol.

:D

It does seem very low for stock though, something is not right. Can you hear any exhaust leaks perhaps?

I can hear tick tick tick sound after I park the car, is that the exhaust leaks noise?

No. That's not an exhaust leak if the car's not running.

Sounds like you're driving in NYC or any other big city. Frequent stop and go along with low speeds = terrible gas mileage.