2007 Infiniti G35 Sport: Impressive Fuel Mileage

I think that 23.8 is a combined number, not simply highway mileage. At 17 and 24 according to the 2008 standards, maybe it is, though.

GCFART. Nice acronym, Scott!

Scott,
 
In that time you must've done two "fill-ups", or maybe you simply took the car with a tank full of gas...but I think it would really help readers understand "terrific mileage" to know what the majority of those miles composed of...
 
Did you happen to do 50 miles on a "closed course track" exceeeding 90mph? Was it pure highway with lots of high speed cruising?
 
23.8 is actually pretty darn good for a G35, from what I've heard, but that's not saying anything good. BMW 335i 6-spd owners regularly report high 20's in majority highway driving, with some owners reporting 28-30+ on pure highway. Lexus IS350 owners report similar numbers.
 
My wife is currently very-much so considering a 2007 G35 automatic (she would buy the 6-spd but this blog has helped convince me that is probably not a good idea...). I would very much like to know if we could achieve 24-25mpg in regular suburban/back-road driving.
 
On a side note: My past commute was 12 miles of back roads in a 2006 Honda Civic SI. While I wasn't bombing it every mile, I did tend to enjoy a trip to redline or two each way every day. I regularly got 25-26mpg on that trip in the SI. Which I imagine is not too dissimilar to what I would get in a G35 (probably 22-23...).
 
My commute changed to 32 miles. 20 miles of pure highway cruising, 12 miles of stop and go traffic lights. My mileage is now steady at 29-30mpg in the SI. My best tank ever was over 34+mpg pure highway driving.
 
I'm not saying this is great...I'm actually trying to point out that sometimes, in everyday driving, there's not that much gas mileage difference between a high-strung 2.0 liter honda 4-cyl in a sleek 2800 pound coupe and a torquetastic 3.5 liter Nissan engine in a 3500 pound sedan.
 
Joe

Yes, we definitely need clarification. How far, how fast, obviously not much traffic. I would think the G35 would get over 25 mpg on the highway in normal use.
 
Remember, even the Vette gets 26-28 mpg on the highway at semi normal highway speeds. That is a comparison I would like to see, how a Vette does compared to a S2000 on a highway jaunt to Las Vegas.
 
You guys could take the G35, the new CTS, and do the same thing.
 
One thing about the 400 + mile range, it is really not hard to do. My wife's Venture LT can go easily 500 + miles on a tank. We have once passed 550 + then decided to fill it up. Had just under a 1/4 tank left. Why, a 25 gallon tank with 22-24 mpg on the highway, 80 mph cruising with the air.
 
My dads old 1978 Suburban used to go over 600 miles. How, 40 gallon tank and 15-17 mpg on the highway. Some cars only lack range because of a smaller tank, not bad highway fuel economy.

Hi, just a couple of things:
That rear 3/4's pic makes the G35 look VERY cool, and it makes the G35 look as if it is ready for the road ahead.
Aurakr has a very good idea about testing the CTS - you should include one for your long term testing!
have a good weekend

Everyone should remember the G35 was driven 130 mph on a closed course by a professional driver on this trip. "Forget" (or substitute with another "choice" word here) fuel economy!
 
http://66.160.188.111/roadtests/1605

130 mph gets better mileage than city driving.

With the aerodynamic drag and the revs I imagine the engine is turning in 5th gear at that speed, I don't know how accurate that statement is, billt9. You're more than welcome to provide more information that would support that. :o)
 
How do we know that Scott, I mean the professional driver, wasn't going well over 130 mph before and/or after he, (whoops) I mean the professional driver, took that photo. After all, if the car's capable of going faster than that, what's stopping him from seeing what the "ol' girl (or guy for some of our female readers)" can do.

SubyTrojan:
 
That is why I love the drive to Las Vegas. Unfortunately, it looks like the secret may be out. You can bet some enterprising CHP officer will be watching the Los Angeles to Las Vegas route very carefully in the future.
 
If the G35 got 23.8 mpg under those conditions, that would indeed be awesome.

AuraKR, the Vettes great highway milage comes from its super tall 6th gear. The S2000 as we all know (Im an owner) has super close ratios and the 6th gear can actually be used (for acceleration) as its nowhere near as long as the Vettes. Another good comparison would be the Vette and the Solstice. The numbers below are from the manufacturers websites and Im prety sure they are EPA estimated.
 
08 Solstice 2.4 manual 19/25
08 Solstice GXP 2.0T manual 19/28
08 S2000 2.2 manual 18/25 (21 combined)
08 Corvette 6.2 manual 16/26
08 Corvette Z06 7.0 manual 15/24
08 Nissan 350Z Roadster manual 19/26
 
I really thought the base Solstice would have done much better as its a large displacement 4 with tall gearing but the turbo Solstice GXP with a smaller motor, tighter gearing, and MUCH MORE POWER beat it on the highway.
 
Given superior performance the Vette offers over the cars listed its fuel economy is outstanding. But pushing around a measly 3100lbs with over 420lbft of torque the engine doesnt have to work.

Hondacura4
 
I know all that, but that is a great idea on the Vette/Solstice comparison. I was just saying it would be an interesting competition, don't you think? The only reason I brought up the S2000 is that it is the polar opposite of the Vette. 2.2 Liters vs 6.2 liters. One is extremely high revving, the other a torque monster.
 
It is very interesting that the EPA rates the turbo versions of the Sky and Solstice as higher, consideing they get almost 90 more horsepower. Maybe Edmunds needs to do a test of the two vehicles as well. Come on hondacura4, let's come up with some more. This could be fun, now if I could only win the lottery.

AuraKR - I own a supercharged S2000 and I get superior highway mileage. Around town is about the same though (18/30). I've also got the old F20C (2.0L). There are other factors though (K&N intake, port'n'polish, bigger exhaust, etc).
 
If everyone switched to less restrictive cone filters, mpg averages would go up across the board.

That gas mileage is horrific! On drives from SD to Vegas at 100+ MPH my 330i would return 30 mpg. Running through Germany and Europe at well over 100 my e90 330i would get me 27-28 (that's with stretches at 140+ mph). Sorry but the Infiniti's gas mileage looks scary awful from my 4+ years with BMWs (it's not fair to mention tjhe 30+ I get with my 07 Cooper S around town).
 
24 mpg impressive? Yeah, if this were a 1980s Z28.

Scott,
  
"This car eats miles like the Irish drink. "
  
Why do you have to go there? You wouldn't have written "like the blacks eat watermelon" or "the mexicans eat beans" .
  
Just 'cause the Irish (like my wife and her family) don't whine about this insulting stereotype like others do doesn't mean you shouldn't think twice before you use it (at least in a public forum).
  
I would hope that a professional journallist could come up with a better analogy than that. How about, "like drunk college guys eat pizza"? There's a steareotype we can all get behind and laugh at.