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Sedans Infiniti M35/M45 Infiniti M35/M45 Real World MPG
91 messages, Last post on Nov 27, 2009 at 4:41 AM
You are in the Infiniti M35/M45 Forum. Your Hosts are pat & karens
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Replying to: acerfan (Aug 15, 2006 2:14 am) "Test M35 averaged 16.4 mpg in city/highway driving, test M35x averaged 17.4 with more highway use. Test M45s averaged 16.0 in city/highway driving, 18.8-19.1 mpg in mostly highway use." Since I buy my cars new, I am comparing my first 3K miles with my M35 to similar experiences with other cars. I do expect the mpg to improve over time ... but ... I think much evidence has accumulated (in CR's evaluation, in reports from consumers on Edmunds, on this board, in many reviews, etc) to strongly suggest that V-6 engine/transmission gets poor mileage for a V-6. It has been widely recognized that the 5 gears and the gearing setup (designed to make this 275 HP engine, with torque of 270  4800 rpm) accelerate faster than competition in auto reviews) produce unusually poor mpg. The car is so loveable in other ways and MSRP'd so much lower than competition that, I believe, people who are smitten by it have a tendency to simply not believe that it has any negative characteristics.
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Replying to: sfcharlie (Aug 15, 2006 5:42 am) I think the M45 requires premium.
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Replying to: antsinpants (Aug 15, 2006 2:51 pm) The M45 REQUIRES premium. They also state that if you MUST put in regular because premium is not available, to not fill the tank, only put in enough to get safely to where you can get premium, then fill it up so you boost the octane as much as you can. They also say to not drive aggressivly while you have the regular in there. |
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Replying to: antsinpants (Aug 15, 2006 2:51 pm) Yes, I've been aware of that from before I bought the car. It was one factor predisposing me to choose the M35. However, like, James, I found that my mpg went down to 16 on regular, even though I've been so preoccupied with the mpg of this car that I have driven it with an obsessionally light foot, so much so that it begins to take the pleasure, for me, out of driving it. I have enjoyed, with other cars, driving a tank-full with total focus on higher-mpg driving, but I don't like being preoccupied with "Will this car ever get 20 mpg?" For example, over the weekend we drove early Saturday morning on a traffic-free route, all highway, for an overnight event, and back early Sunday in similar conditions. Steady 65 mph -- yet only got 19 mpg, for total 65 mph cruising, no city at all.
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Replying to: sfcharlie (Aug 15, 2006 5:07 pm)
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Replying to: james27 (Aug 15, 2006 6:26 pm) I keep a tire inflator in the trunk. I monitor the tire pressure every day on screen. I keep the cold pressure between 34 and 36. Do you think I should keep the cold tire pressure higher?
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Replying to: sfcharlie (Aug 15, 2006 9:05 pm)
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Replying to: james27 (Aug 16, 2006 4:50 pm) Here's a recent post from another Edmunds forum on real world sedan mileage ... "I am looking for any suggestions--I have a two year old G35x and have finally had it with the horrible milage I am getting. I do primarily suburban short hops of one to three miles with a small amount of highway driving when I can. I do not drive aggressively. I am getting around 13-15 MPG." I find a consistent pattern of talk/complaint about Infiniti V6 mpg across the internet. For example, quickly check the consumer ratings link at the top of this forum page.
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Replying to: sfcharlie (Aug 17, 2006 6:12 am)
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Replying to: blov8r (Aug 17, 2006 6:21 am) That's likely ... the hills, I mean. You understand, I wasn't saying I've ever gotten below 16 mpg. That quote was from another post. But, you sound OK with a V-6 using 16-17 mpg than I am. It's subjective, individual variance at that point. I'd not complain about a V8 using 17 mpg, even in combined city/highway, but I'm sure the next generation V6 from Nissan will address this. Anyway, the mpg issue is probably getting some negative emotional overflow from my not liking the M35 as much as I thought I would -- aesthetically, mostly, but some of its driving characteristics as well ... not anything that would lead me to tell someone who likes the car "Don't; you'll regret it" but that has led me to explore pathways (I think I've found one I can live with) out of my lease and into another car, I hope, soon. I don't like feeling this way about my car, especially when, objectively, it's a good car. |
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