Low gas mileage - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Gorath · 02-21-2002, 06:50 PM

I just got a 92 fastback last weekend and I love it my only problem with it is the gas mileage is horrible. I dont get anywhere close 22 mpg. I get like 15 and i dont even race it, yet. Is it just because it has 113k on the engine or is there some other problem? I have tried the fuel system cleaner and i am running 92 octane fuel. Any help would be great

hookedup240 · 02-21-2002, 06:53 PM

i have a 91 and i got 100k miles on it i don't really get horrible gas millege, i get about 300 miles to a tank i dunno how many a gallon that is, btw how big is the gas tank on a 91

Gorath · 02-21-2002, 06:55 PM

I believe it is the same as the 92 which is 13 7/8

Natty · 02-21-2002, 06:59 PM

I just got my 1991. The mileage looks bad, but the guage sucks. We will see...

S13Grl · 02-21-2002, 07:15 PM

15-17 mpg is what you'll get on an old 240. This is what I used to get on my '91 coupe, and this is what I'm getting on my '91 fastback. I don't know any people who get anything better.

Gorath · 02-21-2002, 07:19 PM

Ok thanks for the info.  I thought I had something wrong with it to get that mileage

*LanceS13* · 02-21-2002, 07:26 PM

I average 24mpg :confused:

*Jeff240sx* · 02-21-2002, 08:22 PM

I average about 24 in my '96.  And I stoplight drag as much as I can...
-Jeff

*sykikchimp* · 02-21-2002, 09:26 PM

I have a 92, and I average about 22-24 city, and I drive hard.  I don't think 17mpg is right.  it's only a 4-banger.  You should replace the o2 sensor, and get a new distributor, and rotor, and replace spark plugs, wires, and clean throttle body, make sure your MAF is clear of junk, and have it tested if possible.  The EGR system may be clogged as well.  This sometimes causes issues.

All things that can cause bad mileage.

misnomer · 02-21-2002, 09:42 PM

That sucks at the gas mileage. My last tank got me 350 miles for some 12 odd gallons, for a net of 29 (yes, I calculated it right) miles per gallon. This came up from a 25 average from before I changed my air filter and oil. I typically drive moderately (shift 4k rpms on average), but my primarily highway commute helps. I have a 5sp 92 as well. I don't even expect 15-17 out of my 4.something liter V6 pickup.

f your mileage is in the shits, check your air filter and fluids, pretty much everything Sykik said. And shift sooner, 3500 to 4000, or even less

TPnTX · 02-22-2002, 08:09 AM

Well just to put another into the mix. My 90 with 125k get 20-21 average. I've tried driving like a sane person though one tank and it didn't make a lot of difference. BTW I replaced everything on the list as far as tune-up. It helped very little. The o2sensor did calm down the idle though.

whateverjames · 02-23-2002, 09:54 AM

i just calculated my mileage. from fill up, to the needle even with the last line (we still have 2-3 gallons left) i drove 346 miles. i did 80% highway driving and no racing. 185,5xx miles on the motor :biggrin:

91CRXsiR · 02-23-2002, 11:31 AM

i also get about 15 MPG .. but i have four leaky injectors.. seems to be a problem in old S13's... maybe you guys should check urs out as well.

240sxracer · 02-23-2002, 06:47 PM

i avg about 22 but at times its been high has 31mpg
(90240sx)

DuffMan · 02-23-2002, 08:38 PM

<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'>?<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'>

My car has over 125,000 and I get 26 mpg in mixed (but mostly highway) driving. Even in city driving the lowest I've got was 22mpg. I don't know how you people get 15-17 mpg on a car that's running well.

blades · 02-23-2002, 09:00 PM

yeah i get around 25 per gallon. i get around 550 kilometers out of a full tank of gas(don't know how many miles that is!!)

Nismos14 · 02-23-2002, 09:23 PM

i get like 17-19 MPG

jmharr · 02-24-2002, 10:05 PM

I have a '92 fastback 5spd with 122k and I avarage about 25-27 MPG (mixed driving).  Sometimes I am able to get 400 miles out of a tank, which was a good deal.

JeffNJ · 02-26-2002, 01:48 PM

Some of those numbers are awfully low.  Try a few tanks of super, if you aren't already.  Also chuck some fuel cleaners in there and stuff.  I seem to remember getting over 20mpg in my '91 SE, and that was an automatic.

Mileage now is around 30 or so, but that's because my car doubles in weight when it has occupants.  =)

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02-21-2002, 06:50 PM	#1
Gorath Join Date: Feb 2002 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	I just got a 92 fastback last weekend and I love it my only problem with it is the gas mileage is horrible. I dont get anywhere close 22 mpg. I get like 15 and i dont even race it, yet. Is it just because it has 113k on the engine or is there some other problem? I have tried the fuel system cleaner and i am running 92 octane fuel. Any help would be great

02-21-2002, 06:53 PM	#2
hookedup240 Zilvia FREAK! Join Date: Dec 2001 Location: NJ Age: 37 Posts: 1,149 Trader Rating: (0) Feedback Score: 0 reviews	i have a 91 and i got 100k miles on it i don't really get horrible gas millege, i get about 300 miles to a tank i dunno how many a gallon that is, btw how big is the gas tank on a 91

02-21-2002, 06:55 PM	#3
Gorath Join Date: Feb 2002 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	I believe it is the same as the 92 which is 13 7/8

02-21-2002, 06:59 PM	#4
Natty Zilvia Addict Join Date: Dec 2001 Location: Nashville, TN Posts: 944 Trader Rating: (0) Feedback Score: 0 reviews	I just got my 1991. The mileage looks bad, but the guage sucks. We will see...

02-21-2002, 07:15 PM	#5
S13Grl Married to the Mob Join Date: Dec 2000 Age: 40 Posts: 3,670 Trader Rating: (0) Feedback Score: 0 reviews	15-17 mpg is what you'll get on an old 240. This is what I used to get on my '91 coupe, and this is what I'm getting on my '91 fastback. I don't know any people who get anything better.

02-21-2002, 07:19 PM	#6
Gorath Join Date: Feb 2002 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	Ok thanks for the info.  I thought I had something wrong with it to get that mileage

02-21-2002, 07:26 PM	#7
LanceS13 AutoX Junkie Join Date: Jun 2001 Location: MS Age: 39 Posts: 2,044 Trader Rating: (0) Feedback Score: 0 reviews	I average 24mpg :confused:

02-21-2002, 08:22 PM	#8
Jeff240sx I hate you too... Join Date: Jul 2001 Location: Tampa, FL Age: 38 Posts: 5,828 Trader Rating: (0) Rides Gallery: Jeff240sx Feedback Score: 0 reviews	I average about 24 in my '96.  And I stoplight drag as much as I can... -Jeff

02-21-2002, 09:26 PM	#9
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 40 Posts: 6,518 Trader Rating: (0) Feedback Score: 0 reviews	I have a 92, and I average about 22-24 city, and I drive hard.  I don't think 17mpg is right.  it's only a 4-banger.  You should replace the o2 sensor, and get a new distributor, and rotor, and replace spark plugs, wires, and clean throttle body, make sure your MAF is clear of junk, and have it tested if possible.  The EGR system may be clogged as well.  This sometimes causes issues. All things that can cause bad mileage.

02-21-2002, 09:42 PM	#10
misnomer Nissanaholic! Join Date: Jul 2001 Location: Nevada Posts: 2,293 Trader Rating: (0) Feedback Score: 0 reviews	That sucks at the gas mileage. My last tank got me 350 miles for some 12 odd gallons, for a net of 29 (yes, I calculated it right) miles per gallon. This came up from a 25 average from before I changed my air filter and oil. I typically drive moderately (shift 4k rpms on average), but my primarily highway commute helps. I have a 5sp 92 as well. I don't even expect 15-17 out of my 4.something liter V6 pickup. f your mileage is in the shits, check your air filter and fluids, pretty much everything Sykik said. And shift sooner, 3500 to 4000, or even less

02-22-2002, 08:09 AM	#11
TPnTX Join Date: Jan 2002 Posts: 41 Trader Rating: (0) Feedback Score: 0 reviews	Well just to put another into the mix. My 90 with 125k get 20-21 average. I've tried driving like a sane person though one tank and it didn't make a lot of difference. BTW I replaced everything on the list as far as tune-up. It helped very little. The o2sensor did calm down the idle though.

02-23-2002, 09:54 AM	#12
whateverjames Nissanaholic! Join Date: Jul 2001 Location: St. Louis Age: 41 Posts: 2,263 Trader Rating: (0) Feedback Score: 0 reviews	i just calculated my mileage. from fill up, to the needle even with the last line (we still have 2-3 gallons left) i drove 346 miles. i did 80% highway driving and no racing. 185,5xx miles on the motor :biggrin:

02-23-2002, 11:31 AM	#13
91CRXsiR Nissanaholic! Join Date: Oct 2001 Location: City of Industry, CA [626] Age: 38 Posts: 2,092 Trader Rating: (1) Feedback Score: 1 reviews	i also get about 15 MPG .. but i have four leaky injectors.. seems to be a problem in old S13's... maybe you guys should check urs out as well.

02-23-2002, 06:47 PM	#14
240sxracer Zilvia Member Join Date: Oct 2001 Posts: 197 Trader Rating: (0) Feedback Score: 0 reviews	i avg about 22 but at times its been high has 31mpg (90240sx)

02-23-2002, 08:38 PM	#15
DuffMan Post Whore! Join Date: Oct 2001 Location: in a cardboard box Posts: 2,517 Trader Rating: (0) Feedback Score: 0 reviews	<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'>?<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'> My car has over 125,000 and I get 26 mpg in mixed (but mostly highway) driving. Even in city driving the lowest I've got was 22mpg. I don't know how you people get 15-17 mpg on a car that's running well.

02-23-2002, 09:00 PM	#16
blades Join Date: Jan 2002 Posts: 41 Trader Rating: (0) Feedback Score: 0 reviews	yeah i get around 25 per gallon. i get around 550 kilometers out of a full tank of gas(don't know how many miles that is!!)

02-23-2002, 09:23 PM	#17
Nismos14 Zilvia FREAK! Join Date: Jun 2001 Location: New Jersey Age: 40 Posts: 1,213 Trader Rating: (0) Feedback Score: 0 reviews	i get like 17-19 MPG

02-24-2002, 10:05 PM	#18
jmharr Join Date: Feb 2002 Posts: 39 Trader Rating: (0) Feedback Score: 0 reviews	I have a '92 fastback 5spd with 122k and I avarage about 25-27 MPG (mixed driving).  Sometimes I am able to get 400 miles out of a tank, which was a good deal.

02-26-2002, 01:48 PM	#19
JeffNJ Zilvia Junkie Join Date: Aug 2001 Posts: 550 Trader Rating: (0) Feedback Score: 0 reviews	Some of those numbers are awfully low.  Try a few tanks of super, if you aren't already.  Also chuck some fuel cleaners in there and stuff.  I seem to remember getting over 20mpg in my '91 SE, and that was an automatic. Mileage now is around 30 or so, but that's because my car doubles in weight when it has occupants.  =)