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Infiniti M35/M45 Real World MPG

90 messages,  Last post on Aug 07, 2009 at 11:35 AM

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What is this discussion about? Infiniti M35, Infiniti M45, Fuel System, Sedan

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#14 of 90 Re: M35x MPG [bw45sport] - But by sfcharlie Jun 24, 2006 (5:13 am)
Replying to: bw45sport (Jun 23, 2006 10:52 am) I was asking more about the part of your post in which, as others have suggested on the M35/M45 forum, you find yourself driving carefully to cope with low mpg of Infiniti. I find myself doing that, and I was asking if that gets annoying. It does, sometimes, for me, when I realize I'm doing that. Maybe you just mean you'd be driving any of the LPS cars that way and your post was not conveying the sense of your doing it is specific to this car.
#15 of 90 Re: M35x MPG [bw45sport] - reliability by sfcharlie Jun 24, 2006 (5:20 am)
Replying to: bw45sport (Jun 23, 2006 11:45 pm) Yes, I that would outweigh mpg. Reading these posts and factoring in my own experience, the individual's history with German cars appears to make such a difference. As one person said on one of these forums, probably around vast majority of owners of all the LPS cars are happy with reliability (I owned a BMW 3-series for two years recently and never had it in the shop except for 15K service, so my perception of BMW is solid reliability) and it's a gamble with every car becaues none of them avoid "semi-lemons", but the Japanese have managed to lessen their "mistake-cars" enough to draw you, me, and others toward them. They usually also throw in better mpg and Nissan engines are an anomaly in that regard, don't you think? Although my automotive engineering expertise is not sufficient to fully explain it. It is only the gearing?
#16 of 90 M35 MPG Report by dmgoodman Jun 24, 2006 (9:44 am)
I am averaging 20.4 MPG (last three fill-ups)in a mix of 60% freeway and 40% suface streets (suburban) in my M35. Have about 2,000 miles on the car. Using Premium so far. "Reasonably aggressive" driving style.
#17 of 90 What's the Big Deal about Mileage? by altared Jun 24, 2006 (2:06 pm)
I don't understand all the traffic complaining about gas mileage. When you buy a luxury, semi-sports car, mileage should be the farthest thing from your mind. If you want gas mileage, buy a vehicle that lists that as a selling point.   I will be getting my 2007 M35x in late July and I won't be caring one bit about gas mileage... and we pay a lot more for gas in Canada than you do in USA (just finished spending almost 5 years of my life living in USA). Replies to this message: sfcharlie (Jun 24, 2006 4:18 pm) kgrinder (Jun 30, 2006 4:47 am) sfcharlie (Jul 03, 2006 7:38 pm)
#18 of 90 Re: What's the Big Deal about Mileage? [altared] by sfcharlie Jun 24, 2006 (4:18 pm)
Replying to: altared (Jun 24, 2006 2:06 pm) It's a gas mileage forum. Replies to this message: kgrinder (Jun 30, 2006 4:47 am)
#19 of 90 Re: M35x MPG [zidecar] by maximafan Jun 24, 2006 (7:01 pm)
Replying to: zidecar (Jun 23, 2006 10:49 am) I gotta hand it to you for being able to  keep a lid on using the wonderful VQ series  engines from Nissan/Infiniti for what they're  really made for. I know it's hard for me.  I have a 2002 Maxima SE and I love to punch  it and I love the little growl-note of the  exhaust. It's like turning away from that  sweet tempting dessert! My lease will be  ending soon, so I'm keeping the M35 in my  radar, among some others. Replies to this message: zidecar (Jun 26, 2006 8:56 am)
#20 of 90 My M35X Mileage by art234 Jun 25, 2006 (6:12 am)
My M35x is a little over a month old, with 2000 miles. I am averaging about 18 MPG around town with about 25% highway driving, but on a recent road trip, including rush hour traffic, I got 25.1 mpg one way and 23.9 back (more stop and go on the return).   What I find interesting is this mileage is somewhat better than the G35X I had before. It was averaging 15-16 in town and never better than 22 on the highway. Considering that the M is heavier with the same power train I was surprised.   That said, I could see a 6 speed tranny with a much longer final drive. The RPM's should definitely be able to be under 2000 for 65-70 miles per hour, and the 6th gear would not compromise performance.   I must say I do love the car in any case...
#21 of 90 Third fill-up by sfcharlie Jun 25, 2006 (8:09 pm)
Computer said 18.5 mpg.   Calculating it myself at fill-up yielded 18.8   Combined (mostly non-commute time on this fill-up) highway and city.
#22 of 90 Re: M35x MPG [maximafan] by zidecar Jun 26, 2006 (8:56 am)
Replying to: maximafan (Jun 24, 2006 7:01 pm) I gotta hand it to you for being able to keep a lid on using the wonderful VQ series engines from Nissan/Infiniti for what they're really made for   I didn't say it was easy, just that it became a personal challenge, since the easier thing to do is punch it whenever the urge hits!   Drove the M to the Poconos on Sun and at 65-70 MPH continuous driving, averaged 25.6 MPG according to the computer readout. Now, if I was willing to stay in the right lane, keep my speed at 60 and be passed all the time, I'm willing to bet I could get 27 MPG - but who cares!   I've already proved to myself that it could be done - now I'll fall back to my 17-18 mpg and just enjoy driving my M! After all, it's only costing me ~$25/month!   BTW, An informal measure that I like to use in assessing a vehicle's real world efficiency is that the car's fuel tank should enable it to go 400 miles on a tank of gas. Anything less and I find my self stopping too frequently for fill-ups. The M appears to fall just below this benchmark. That's about the only real complaint I have!
#23 of 90 Most disappointing aspect of the car by jdmass Jun 26, 2006 (6:04 pm)
I have a 2-month old M35x and I continue to be disappointed by the gas mileage. I am getting typically 15-17 mpg in suburban driving, and on a recent trip from Mass to northern Vermont I averaged 20.5 mpg. Believe it or not, I am trying to drive with gas mileage in mind.   Prior to this car I had a BMW 540 which I drove much harder (without regard to mileage) and consistently 19-20 mgp in the same suburban driving.   There are many things I like about the car, but the fact that Nissan can't build an engine that both performs and gets reasonable mileage should be an embarassment to them. Replies to this message: zidecar (Jun 27, 2006 9:26 am)

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