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Sedans Infiniti M35/M45 Infiniti M35/M45 Real World MPG
90 messages, Last post on Aug 07, 2009 at 11:35 AM
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The computerized mpg read-out was 16.2 mpg. Caluclating actual mpg, from miles driven and gallons pumped to fill 'er up again, yielded 18mpg. Driving was about 40% highway stop-and-go, 40% highway at 50 to 70 mph, and 20% city. |
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| On a trip the best I have done is a combined 20. In the city I get 14-16. Overall after 15K I have averaged a bit over 16. Had a lot of fun though! | |
My last 500 mile highway trip I averaged 24 mpg with cruise set to 72 and tire pressure at 35 all around. In town, I get about 14, but I have a heavy foot 
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| Combined highway and city = 17.3 mpg (using 89, not 91 gas) | |
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My M now has ~8K miles. I do mostly local driving and have been fairly diligent about avoiding quick starts and keeping my top speed to 40 MPH or lower. Using regular fuel (87 octane) I have been averaging 20 MPG. It has been improving slowly over its life (picked it up in Aug '05). Initially I averaged about 16 MPG for the first 1K miles, but then I wasn't being diligent about limiting my speed - I preferred to vary it regularly to give the engine a decent "break-in". On the few occasions that I have driven it on the highway for an extended period (> 1 hr), I have averaged 23 MPG at ~ 70 MPH. This was as of a few weeks ago. If I had the willpower to keep my speed in the 60-65 MPH range I believe it might even improve to 24 or more MPG.  This vehicle has been the most trouble-free of any that I have owned.
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Replying to: zidecar (Jun 22, 2006 9:15 am) |
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Replying to: sfcharlie (Jun 22, 2006 11:01 am) I looked at the Audi A6 - it came in second on my list as well. I do not have any regrets or remorse in picking the M. I didn't like the MMI interface, its CD accessibility or its reliability record, but that doesn't mean there weren't things about the Audi that I miss (e.g., electronic emergency brake)... As far as adapting my driving habits - yes, I had to think about it for a few weeks, especially since the M's throttle was a lot more responsive than on my previous car. Initially it was almost a personal challenge to see if I could voluntarily do it. After that, it more or less became a habit and I felt a sense of accomplishment that I could actually sustain it. That doesn't mean that I don't stomp the pedal every so often just to remember what its like!
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Replying to: sfcharlie (Jun 22, 2006 11:01 am) $400/yr difference in gas on a $40k+ car would cause buyer's remorse? I drive an M45 Sport, have averaged a little over 17mpg through 10,000 miles, and wouldn't even dream of having an A6 for the $300 max it will cost me. |
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Replying to: bw45sport (Jun 23, 2006 10:52 am) Why so down on the A6?
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Replying to: sfcharlie (Jun 23, 2006 5:50 pm) I really didn't mean to sound harsh regarding the A6. It's a wonderful car and one that would make anybody shopping in this segment, other than zealot BMW owners, very happy. My only concern with the A6, which is a concern to me with all German makes right now, is reliability. I'm 2 for 2 with lousy BMW products and have been suffering through the worst automobile ordeal imaginable with a 2003 MB SL500. While Audi has made tremendous strides in improvement as it relates to reliability, mid to long term reliability still suffers when compared to Infiniti/Lexus. Reliability is not my only consideration when choosing cars but it has moved up the list with my recent experiences. While I agree that Infiniti's entire lineup would be better served by cars that were more fuel-efficient I merely wanted to point out that the financial side of the equation is often overstated. BTW, I hope someday we will all be so blessed to appreciate the driving dynamics that only BMW can provide.
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