Whats your average MPG

[nj1sh]

I get around 21 MPG

[Darktide]

Winter:22-23 mix driving24-25 highway

Summer:yet to be tested

32psi in the tires and running regular gas

[Gman8990]

22 in town28 on highway

[WalterGA]

2007 Maxima SE. Really lousy around town...10-12mpg. Fine on the hwy, on cruise, with 29.7 the best, so far.

[nj1sh]

something wrong with mine i never get more than that. Maybe i need that tune up. hopefully when i install the intake it will help a bit.

[Chris92SE]

I don't really check it around town, but with some mixed driving city and highway it was 23 mpg.

However, I consistently get 28-30 mpg on the highway. I have taken several long trips and calculated the mpg. That is usually going 70-75 mph the entire time.

I have synthetic oil, AMSoil gear oil in the transmission and a bunch of other mods that help with power and mpg. Y-pipe, cat-back, intake and underdrive pulley.

The official EPA rating on my car was 21/26. The new rating puts it at 18/24, so I think I am doing really well.

[blackmax23]

With mixed city/highway driving, I get a consistent 22 mpg. When I drive mostly highway, I get an avg. of about 25-26. Never saw more than 26 though.

[AcMav]

Lol wow you guys are high compared to me. I get 13.3 City in my I30t, somethings wrong here Thats what ive gotten consistently for the last couple years with nothing mechanically wrong.

[bhdien]

I get like 300 miles to a full tank

[Chris92SE]

I get like 300 miles to a full tank

On the freeway, I get well over 400. Last time I went to Seattle, I made it 450 before going to a station and it only went to like 15 gallons.

Lol wow you guys are high compared to me. I get 13.3 City in my I30t, somethings wrong here Thats what ive gotten consistently for the last couple years with nothing mechanically wrong.

You might not have any codes, but you might have a bad knock sensor, o2 sensor or some other problem like that. Exhaust leaks can also cause poor performance

Also, replace your air filter (or clean your K&N), check your tire pressure and replace your transmission fluid with synthetic next time.

If you have the money, I would also recommend an aftermarket Y-pipe. It increases performance and mpg. It's probably the best (reasonably priced) bolt on mod you can do for a Maxima.

[D_roc]

16-18mpg on the city and about 20mpg on highway yea its f'ed my dads hummer has better fuel economy

[xxvengxx]

about 24-25 mixed driving

about 28-30 highway.

I don't do enough city driving to figure that out

my highway speeds are constantly above 70 mph.

I can make a 420 mile trip on a single tank of gas

[nj1sh]

I just got my car back with the injen cai installed. Let me just tell you the car feels like its sliding on ice. The throttle response is just crazy, the gears shift very soft, it pull like a mofo. I hope this should increase the mpg my car was choking on that old junk.

[Darktide]

it's doubtful you'll get any gains with it for 2 reasons. 1) the stock setup was made just right for the situation. They design them pretty well for fuel economy. What you probably needed was just a filter.2) With the comment that the throttle is more free.... you'll probably want to punch it more which will cause you MPG to drop.You weren't bound to get much out of the CAI even if it did improve CAI (extremely negligable IMO). But if it does, reason #2 will take it out. BUT! At least you have a car you enjoy driving that much more. And it's worth it. I'm thinking of getting a y-pipe and a wai sometime soon, the car is far too sluggish off the line for my tastes

[nj1sh]

since it responses faster it means less foot to the gas. More air in less gas wasted. I don't know maybe I am wrong. I'll know soon.

[CHORAY911]

If I am good on the interstate, 32 MPG. Once I get into boost all bets are off.

[McSteve]

i just checked. 17mpg mixed driving with my I30 WOOT WOOT! used to get 300 miles with a tank, now 250 with LOTS of highway. But my ECU is busted and the car idling at 1400 RPM! XD Gotta get that fixed thursday tho and then it'll be back to normal HOPEFULLY

[champride1]

i can get from south jax to north atlanta on 1 tank...and from south orlando to south jax on a quarter tank if i drive "normally"... i have used more than half a tank from orlando to jax and under an hour drive

[lightsout]

yesterday i got 331 miles out of my tank, and still had 1/10 of a tank left...so i'd say maybe 350 miles on one tank if i cruise control around 70-75 consistantly

how many gallons do our tanks hold????

[McSteve]

18 I believe

[davskins97]

I am getting 20mpg with almost 100% city driving (winter fuel). I get one or two mpg more in the summer. I haven't checked my highway mpg in a long time, but it used to be around 25mpg.

These cars are 4DSC's, so I would guess that the mpg from one driver to another could vary quite a bit, depending on how many stops/starts and how aggressive the person drives. I don't pound on mine as much as I did when I first got it, but I'm no grandpa either. It's hard not to drive these things like racecars!

[shortdogg1980]

i have an 2001 i30t, with 97000 mile, i average around 14mpg in the city and highway i average 17.2, everyone keeps saying to replace the knock sensor, but i figured if i had a bad knock sesor my timing would be retared, but its not according to my scan tool, i'm almost to the point where i have no choice but to trade it, i hate to but ii cant afford the gas mileage on this thing.......any ideas from anyone?

[rxm6]

My record is 33 mpg down to LA. Drafted semi's the whole way.

Around town i get about 22-23.

If I'm in a hurry and I want to GO...18-20

[lightsout]

i have an 2001 i30t, with 97000 mile, i average around 14mpg in the city and highway i average 17.2, everyone keeps saying to replace the knock sensor, but i figured if i had a bad knock sesor my timing would be retared, but its not according to my scan tool, i'm almost to the point where i have no choice but to trade it, i hate to but ii cant afford the gas mileage on this thing.......any ideas from anyone?

you need to replace your knock sensor. It usually doesn't throw a code in the scanner unless another sensor is bad (like one or more 02 sensors, or a MAF sensor). Replace it your self, run a fuel system cleaner in your next tank, check your air filter and tire pressure...then reap the beni's of all your hard work in MPG's!!!

[MCovington]

My 01 I30 get 24 in city driving and 29 on the HWY. I just traded it for my 95 Q45 which got 22 HWY and 18 City. I hated to get rid of the Q but needed better gas milage as I drive alot. I love the I30 though it handles good and actually has more leg rrom for my 6'-2" frame. Plus it's alot easier to work on than the Q was. I30 has 81K miles, color black. No mods yet but I will keep reading to see what needs to be done to her. I'm thinking about going with 18" rims when the tires wear out. Any thoughts. Better or worse gas milage with 18" rims. Running Goodyear Performance Eagle Touring now. They seem to handle good but I can tell the carbon fiber sidewalls are stiff and the ride is not as smooth on rough concrete roads as the Q was.

[lightsout]

today i ran the tank near the end and stopped to get gas at 370 miles!!

SHELL

[TJMAX98]

Damn.....im pretty low

I get between 250-300 miles per fill up....

I use 93, and costs me about $55-$60 per fill-up

[shortdogg1980]

would the intake need to come off to replace the knock sensor on my 2001 i30t?

[davskins97]

Damn.....im pretty low

I get between 250-300 miles per fill up....

I use 93, and costs me about $55-$60 per fill-up

Can somebody who actually knows for sure weigh in here. I know that some engines actually get worse mileage with higher octane fuel if they weren't designed for it. I use mid-grade, but maybe that's wrong too.

[Darktide]

Our owners manuals state clearly that we should be running at least 91 octane... which means you need to run supereme (since regular = 87, premium=89, super=93)

Personally I use 87... and i get 23mpg mix. about 20 city. and 27mpg all highway. I plan on running a test. I'm running my tank low and plan on using Shell V-Power for the next few tanks to see how much of an increase I see.