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Infiniti FX45 Real World MPG

20 messages,  Last post on Jun 09, 2010 at 8:24 AM

You are in the Infiniti FX35 FX45 FX50 Forum.

What is this discussion about? Infiniti FX45, Infiniti QX56, Infiniti QX4, Fuel Efficiency (MPG), SUV

Messages Page 2 of 2

#11 of 20 Re: 2007 Mileage [vanpool] by keithsea

Jan 05, 2007 (6:57 pm)

Replying to: vanpool (Jan 02, 2007 3:51 pm)
I'm surprised by these mileage reports.
 
Since October in my 2006 FX45, I'm only seeing 11-12 mpg in Seattle area (ouch), with premium unleaded. That's a lot of stop and go traffic and hilly surface streets, but I still only see ~14 on wide open 60-70mph highway. Have yet to see a '15' on the mpg screen.
 
Any other FX45 owners out there able to comment on their mpg?

#12 of 20 Re: 2007 Mileage [keithsea] by vanpool

Jan 05, 2007 (9:01 pm)

Replying to: keithsea (Jan 05, 2007 6:57 pm)
The mileage I have reported 18-19 in town and 23-24 Highway is for a FX35, V6.

#13 of 20 WOW u guys !!! by hovy

Jun 21, 2007 (9:27 pm)

How do you guys manage such MPGs?!?!!? I had a 2005 FX35 loaded with all 3 available packages. My average MPG was 15-16 MAX! I guess that's why I got 5 speeding tickets. Hmmm .... ok, makes sense, you guys must drive like mom'n'paps ...

#14 of 20 Re: WOW u guys !!! [hovy] by ttummy

Jun 22, 2007 (6:41 am)

Replying to: hovy (Jun 21, 2007 9:27 pm)
The V8 and V6 get almost the same MPG, only about 2mpg difference.
 
There are several factors that I've found help MPG:
1) Check you tire pressure, I found that 35 PSI cold presure helps over the stock 32 PSI.
2) Put in an aftermarket air intake or at least a K+N filter. I got about 2mpg just from installing a K+N filter and the car feels faster, though I haven't dynoed to see if it actually is more powerful.
3) Install lowering springs. Just 1" lower and you will get better handling and a slight improvement in highway MPG.
4) Turn off the air con when possible.
5) Drive with the windows up.

#15 of 20 FX 45 MPG by jdonahue

Jan 16, 2008 (8:30 am)

I have an 06 FX 45 with 35K. I average 16-17 mpg around town and about 18-19 hwy running 70-75 mph. When the car was brand new I got 24 mpg out of one tank of gas. Don't think the mpg has tipped 20 since.

#16 of 20 Milage. by ferrari99

Jan 25, 2008 (3:21 pm)

FX45 -03 42K Miles. Avg mostly city is 16.2 for the last 3 years.

#17 of 20 Re: Infiniti FX45: Real World MPG [steve_] by msticks

Feb 20, 2009 (1:06 pm)

Replying to: steve_ (Jun 16, 2006 2:02 pm)
I've had my FX45 since it was new back in 2004. I always use premium and the best mileage I've ever gotten (all highway - 65 mph or slower) was right at 20 mpg. If I drive my usual 70-75 mph I'll get 18 mpg or so as long as it's all highway. Where it really nosedives is in the stop and go city driving. Worst I've ever gotten in 14 mpg. If I was to average over the 5 years I've had it I'd say I've probably averaged 17 mpg. But hey, you buy a heavy SUV with AWD and a powerful V8 you can't expect 30 mpg! I went in with my eyes open and haven't regretted it yet. As an aside I just bought my wife a 2008 EX35, loaded, AWD and we've been averaging 18-19 mpg on mid-grade. So a smaller car with less weight and a V6 isn't doing that much better than a V8. Maybe when the EX35 loosens up a bit mileage might improve. But again - you makes your choices and you pays the price.

#18 of 20 Re: Premium Unleaded? [texasfx35] by msticks

Feb 20, 2009 (1:16 pm)

Replying to: texasfx35 (Dec 30, 2006 12:05 pm)
I agree with Texasfx35. I have an FX45 and I played the half a tank of 93 premium and half a tank of 89 midgrade and could see no real benefit. As he said a $100 a years isn't worth the potential problems. You buy a $60K car with a V8 you shouldn't have to worry about $100 a year. I use only premium and have put 77K miles on my FX-45 in the last 5 years and it still runs like new and will embarass the occasional kid at a stoplight in his Mustang GT! Now I will say that I just bought my wife a new EX35 for Christmas and we use mid-grade in it and it runs just fine. I think the VQ engine is a bit more forgiving. The owners manual suggests (rather than demands) premium but 89 mid-grade seems to work fine in the EX. The trip computer says she has averaged 20.9 mpg for the first 3000 miles. Now maybe if we had used premium it might ave broken 21mpg. Don't know. Two thing in play here - lighter car with 2 less cyclinders and she has a MUCH lighter foot than her hubby.

#19 of 20 Re: Infiniti FX45: Real World MPG [steve_] by drivin1

Jun 03, 2010 (6:13 pm)

Replying to: steve_ (Jun 16, 2006 2:02 pm)
Please talk only FX45~
I have a 2006 and average 16.2mpg. I drive it kind of hard because that's what I bought it for. I asked the Mercedes dealer what the gas mileage was on an E 350 I was checking out and his response was most Mercedes drivers don't have to worry about the mileage. I agree and 16.2 is the result. This thing is a beast and needs to be drivin once in awhile. Drive it like you would if the mileage didn't matter. If it does matter, get a Prius. Drive on my FX45 family, drive on!

#20 of 20 My 2005 FX35 AWD fuel economy! by smarty666

Jun 09, 2010 (8:24 am)

I can't speak for the 2009+ FX models, since I don't have one, but at least back in 2005 and 2006 when I got my FX35, the AWD system was only on when you pushed a button for snow mode so the majority of the year I drove with RWD only!
 
On avg, I got 17mpg around rural town, with a couple of 20 and 21mpg on long distance road trips with mostly interstate/highway driving! This though was with using Hess and Exxon Premium gasoline; I switched to Shell Premium on all my vehicles about a year ago, but I never used it while I had my 2005 FX! I have seen incredible improvement in avg and long trip mpgs on my current vehicles with the switch to Shell Premium and wish I had done it long ago while I had the FX! I think I would have seen a 2-3 mpg improvement!
 
God help the FX45 and FX50 owners with the V8 though, I don't know how you guys do it with the V8 and fuel economy! All the power to you though who do have the V8!
 
I remember back in 2008 I think when gas prices got up to $4.30 a gallon here for Premium in NJ, I got killed with my FX; each week the fill-up was $80-90 bucks! God did that eat a hole in my wallet! Pray and never gets up to that prices again!

Messages Page 2 of 2

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