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Nissan 300ZX Gas Mileage

17 messages,  Last post on Sep 24, 2011 at 12:04 PM

You are in the Nissan 300ZX Forum.

What is this discussion about? Nissan 300ZX, Coupe

Messages Page 2 of 2

#8 of 17 Re: Nissan 300ZX: MPG - Real World Numbers [300zx12345] by sudzo77

Jul 08, 2008 (6:28 am)

Replying to: 300zx12345 (Dec 19, 2007 9:09 am)
I just got my first Nissan 300zx - it's an 85 non-turbo 5 speed with 157K miles.
 
With the really bad front end components and less than great tires I averaged 29 mpg using 87 octane last week driving to and from work, which for me is all highway travel at 53 miles each way.
 
It still needs a tune up but it has a K&N Cold Air Intake and filter on it and a new exhaust system so maybe this could be pushing the MPG up.

#9 of 17 Re: Nissan 300ZX: MPG - Real World Numbers [claires] by tommyrays300z

Jul 10, 2008 (2:13 am)

Replying to: claires (Jun 28, 2006 9:38 pm)
Recently, on the way from LA to Palm Springs, with cruise control set at 60 miles per hour, I got about 27 miles per gallon. Lately, being careful to gradually accelerate, I am getting about 16-17 miles per gallon in city traffic. At 170,000 miles just got smogged and mechanic said it was the cleanest running Z he'd ever tested.
 
I get compliments on how great looking this car is all the time.

#10 of 17 fuel problem by marciano1

Jul 19, 2008 (10:04 am)

I have a 1990 nissan 300zx, 2-seater and when I get low on fuel or put fuel in it, it revs up to 3,000 - 4,000 rpms, kicks into 2nd gear, revs up to 3,000 - 4,000 rpms again, but then starts to slow down like its gonna stall out. I have replaced the fuel filter already. If I let it sit for a couple of days after filling it with fuel, theres no problem until it gets low again. Do you have any suggestions for me?

#11 of 17 Re: Nissan 300ZX: MPG - Real World Numbers (tommyrays300z) by hpmctorque

Aug 18, 2008 (8:18 pm)

What year is your 300Z?
 
My '88 ZX has has 177,000, and it gets compliments too.

#12 of 17 Re: fuel problem [marciano1] by redhotzzz

Nov 08, 2008 (8:54 am)

Replying to: marciano1 (Jul 19, 2008 10:04 am)
I have a 1985 300zx that occasionally does this same thing (it really began with the recent fuel shortages), BUT I met another Z-a-holic Nisstech while waiting and he is a geophysical engineer. He says these cars are NOT meant to run on ETHANOL gas, and to only put HiTest gas in them, preferably SHELL. I've been doing that and not another problem. Just what I have learned.

#13 of 17 Re: Nissan 300ZX: MPG - Real World Numbers [joefriday1] by Daves86Z

Dec 11, 2008 (7:55 pm)

Replying to: joefriday1 (Aug 07, 2007 6:28 pm)
Hi. I have a 1986 300ZX 2+2 that only gets around 10mpg. Non-turbo. Does anyone know how I can improve that number? Thabks.
Dave.

#14 of 17 Re: fuel problem [redhotzzz] by Daves86Z

Dec 11, 2008 (7:59 pm)

Replying to: redhotzzz (Nov 08, 2008 8:54 am)
Thats a great tip. I didn't know that. Will that help with mpg?
Thanks.
Dave.
P.S. I'm new here but I've had my baby for four years now. 1986 2+2 300ZX N/A.

#15 of 17 Re: fuel problem [marciano1] by pauld5

May 26, 2009 (1:19 pm)

Replying to: marciano1 (Jul 19, 2008 10:04 am)
The air conditioner has a RPM increaser that will pump up the RMP when AC is running. not that this is what it is! You can check the ECU diagnostic with slef check method. Maybe that is waht is doing it?

#16 of 17 Re: Nissan 300ZX: MPG - Real World Numbers [Daves86Z] by pauld5

May 26, 2009 (1:20 pm)

Replying to: Daves86Z (Dec 11, 2008 7:55 pm)
Can you smell fuel?

#17 of 17 love my ZX~gas mileage by mooksmom

Sep 24, 2011 (12:04 pm)

I own a 1985 300Z 2+0, and use 87 regular but keep Shell gas in it that I have been told by my mechanix is better for it. I get 29 mpg average...very happy with that!

Messages Page 2 of 2

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