What is everbody's mpg?

[Tampa G35 Sedan 6MT]

Yea you went to a much smaller tire.... But from 235 40 to 245 45 you won't feel it... I never did..

I went from 215 50 to 245 45 and there wasn't any change... But it was a smaller tire

I wanted the wider tire

My lexus had the same gear problem in the Is300 70 was at 3k rpm

The new Is 350 is like 2200 rpm at 70

That is how they get like 30 mpg highway.

DJ

[bbpathfinder]

20mpg in town/freeway,22 all highway @ 75-90mph

[rg_g35x]

17-18 MPG mostly city driving, with a heavy right foot.

[itgogitrev]

I had the same issue with my GTI about 2 years ago, 2500lb car with a 2.9l VR6, high revs on the highway. I ended up removing the 5th gear (which was a .81) and replaced it with a .72 from a diesel. VWs are just like Legos so the swap was very easy, took about 3 hours including getting the car in the air, draining the fluid, opening up the end of the transmission, pulling the gear and reverse of disassembly. My mileage went from 290 miles/12 gallons (24mpg) to 325/12 (27mpg). The gear cost $12 from a local boneyard.

Are parts easily swapped from different transmissions in Infinitis? What is the final drive and gear ratios on the 6MT?

[Tampa G35 Sedan 6MT]

I would love to know... I would like my 6th gear to rev about 2000-2200 rpms at 70... The infiniti then would get like 33-35 MPG Highway! The stock MPG Highway is 26. I put larger rear tires and now Get around 28-30MPG highway/ I am sure if i lowered the RPMs more i could get that 33+ Number! Right now the RPMs are at about 2500 at 70 but better than the 2750 that it used to be! The autos are worse!!!!! at 70 the rev at a 3000 even.

DJ

[gwoods]

I've been getting 22 mpg on my past 6 tanks.. including one trip to the track? I guess the winter gas burns longer? or the AC was taking 2 mpg to turn?

Jeff

[tollboothwilley]

gwoods...i'm getting worse gas mileage here by about 2 MPG with the winter gas, seems like the car is burning extra gas tryin to get the engine warm and keep it there

on my 5AT i hit about 2500 RPM's at 75 MPH, about 2800 = 80MPH

18-19 MPG during the winter so far20-21 MPG during the summer months22-26 MPG on long drives, depending how fast i drive.

cruising at 70 MPH = about 26cruising at 75 MPH = about 24cruising at 90 MPH = about 23

[Tampa G35 Sedan 6MT]

It revs that low at 80MPH

2800 RPMs ??? are you sure that is correct? DJ

[tollboothwilley]

after reading this thread a while back, i checked while i was driving. I'll double check again, but i'm pretty certain. I thought it was odd that i was getting what everyone said they wanted Made me happy

[Tampa G35 Sedan 6MT]

lol, but yea check and let us know... That would be cool to have it that low!

DJ

[Sentientbydesign]

you

You can go with the 245 45 17 or even 245 50 17Look at the 245 45 17 general exclaim tires on the tirerack.com Had that same size on my lexus Is 300 and it was really nice. The car felt like it was glued to the ground

You will never feel the difference over the smaller tire... nor will it change your Mpg...

We are talking MM not Inches In hight difference!

DJ

On a 245 width tire, one series increment is about half an inch. I know from experience that you can feel the difference. My 225/45/17 felt different than 225/50/17 with the same brand and style of tires.

[telcoman]

It revs that low at 80MPH

2800 RPMs ??? are you sure that is correct? DJ

When I had a G35X loaner 80 MPH was at 3250 RPM if I remember correctly

Telcoman

[danielekfuj]

Had that same size on my lexus Is 300 and it was really nice. The car felt like it was glued to the ground

Sorry to thread jack, but how was your is300? My dad is looking to buy a car, so I'm trying to be a positive influence. g35 or is300? he does not want a coupe or a 6-speed... and more

[Tampa G35 Sedan 6MT]

Well the lexus was a better built car... I know guys but it is true lol.

The Infiniti is more like Sport then Luxury... The Lexus is Luxury then Sport...

For your dad i would go with the lexus. I dove it from 60k miles to 118k when i sold it... Never did it leave me stranded... The only thing i did was a O2 sensor that i got on ebay for 30 bux and installed it my self....

in two years that i had it i lost only 2500 bux in value! that was the best part.

Brakes, Tires (2 sets), oil changes (mobil one 15k mileage oil and filter) that is all i did...

The Is 300 was an auto and was very smooth.. That 5speed auto is way better than the one in the new 07 G35's for sure... Never missed a gear or got stuck thinking what gear to go into.

The INLINE 3.0 L was great... It is the motor that came out of the non Turbo Supra in 1998. very smooth and even power band. at idle you could only hear the valve chatter lol

Don't get me wrong... the G has way more power (my 06 298 hp) vs 225 hp

The lexus was about the same on the gas as the g35.... i always got around 20 in the city and 24 on the Highway.

The Is 300 was a much smaller car than the G aswell. It was easyer to park and back up... And to drive on the road.

It looked really cool with the Xenon lights on top and the yellow fogs on the bottom... ONe of my favorite things about the car.. The Xenon's also had a cool self leveling system.. (IF you hit the brakes they would aim up a little bit until you came to a stop... and if you hit the gas they would aim down so that you didn't blind everyone!)

They are fun and cheap cars to keep on the road!

If you get one for dad you won't be sorry..

After all the problems i had with my infiniti... Im sorry i got rid of my IS for 10k that never had a problem and was running great!



DJ

[danielekfuj]

does the infiniti have a lot of problems? because were looking to buy one with a rebuilt title, so no warranty.

[Tampa G35 Sedan 6MT]

With my personal experience with my INFINITI.... I probably will not buy another one! And i would never buy anything with a rebuilt title!!! You need the warranty for the Infiniti trust me! ! ! !

I would only go with a used lexus after 60k miles... not an infiniti lol

DJ

[Sentientbydesign]

I have to chime in here and disagree. Sorry for the threadjack btw.

I have 275,000 miles on my I30. Original Engine and transmission.

In 8 years, it's had 4 "major" problems. Timing chain cover leak. Radiator and fan shroud. Rear Struts. And a CV axle.

The Head Unit, Antenna mast, and winshield wiper fluid pump, were not "major" in my mind.

Everything else on the car still works. So to say that they aren't reliable or you "need" the warrantee is a misnomer.

I will say that the newer Infinitis/Nissans seem a little more delicate than the mid 90s ones, but that's the case with just about all cars these days with the excessive amount of electronics.

On the flip side, my wife's family swears by Toyotas. All three of the ones they had (pickup truck-pre tacoma, Avalon, and Celica) all leaked oil. All had suspension issues. All under 200,000 miles.

You tell me which is more reliable...

I would steer clear of the "rebuilt title". I do know of a dealer here in SoCal that can get you a G Coupe for 18-24k depending on year, auto or stick and color. Let me know if you're interested.

[MSAInfiniti]

I've got about 700 miles on my 2008 G35xS and have been getting 15.2-16.4mpg. I drive 13 miles to work, then a couple miles to lunch, then the same couple miles back to work, then home 13 miles. Mostly slow highway driving. I did make a trip to Salem, OR from Portland, OR and was getting about 25-27mpg. My average speed is still only about 25mph though...that's why I'm assuming my mileage is so bad. I fill up at 20-25 miles left in the tank (when the alarm lights up) and have been getting 275 miles to a tank.

On another note, I thought the '08 had a 20 gallon tank, but when I fill it it only takes 16.5...Is there only a 17 gallon tank?

Michael

[Tampa G35 Sedan 6MT]

I am talking about the G35's lol

My uncle had a maxima with over 250k miles... 1994 and it was great..

DJ

[tollboothwilley]

Tampa...I checked again

turns out i was wrong I'm at 2850 RPM's at 80 MPH, not 2800 but thats not too bad

what are others at normally at this speed?

[Sentientbydesign]

3000 at 80mph on 05 6MT coupe.

[Mr Iglez]

much like everyone else, i get 20-22 on the highway and 13-17 on the streets... living in Brooklyn, NY i get an average of 15 miles a gallon and as you can imagine, i'm mostly street driving. When i'd take the car to CT 150 miles away, it would go over 20 mpg if i kept it at 80mph but would go down to 18 as i drove at higher speeds.

[BigWill]

anyone with a few mods care to share their mpg?

I have an '04 auto coupe with JWT/Ztube, GroundingGear, intake spacer, and axle-back exhaust, and love to shove my foot down on the long skinny pedal REALLY hard. I live about 11 miles from work, all city driving. I get a consistent 13/13.5 mpg. If I make one freeway trip of 40 or 50 miles per tankful, I get 18. On one three day trip up north, (Approximately 500 miles round trip), I got an average of 22.

Oh, and I have all required maintenance done on time... dealer for warrantee stuff, and private mech for all other.
Modified by BigWill at 9:08 PM 1/3/2008

[BigWill]

Accidental double post.... oops. See below.

[BigWill]

Well the lexus was a better built car... I know guys but it is true lol. DJ

I am with you on that... I was torn between the IS300, GS400, and the G35 coupe when I was looking. I nearly went with the Lexus just for the better tire and brake wear... but I am very happy with my G!! No regrets, but the IS300 is a really nice car.

[bublightyear]

don't know about the sedan but my coupe get 24 mpg highway consistantly. Which is way better than my husbands ford truck which gets 16mpg on a really good day.