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Sedans Honda Accord Honda Accord Real World MPG
2672 messages, Last post on Nov 23, 2009 at 2:36 PM
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Replying to: ezshift5 (Apr 11, 2008 7:07 am) 
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My mpg average for the first 1000 miles has been 30MPG. Following is a break down: 374 miles on 12.90 gallons 424 miles on 13.61 gallons 200 miles on 6.70 gallons
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I just returned from a 400 mile trip. Southeastern Oregon to Western Washington. Over a 5000 ft. mountain pass in 30-40 degree temps. Warming to the 50's the last few hours. I kept the speed to 65 and under for the most part. A couple of stops but very little city driving. The results: 41.7 mpg, the best ever in my 06 Accord EX-L I4 manual. The 08 I4 numbers continue to interest me. I wonder how well I'd do. In over 44,000 miles in my 06, I've only had 8 tanks below 30 mpg, all in the winter. 29.5, 29.9, 28.0, 29.8, 28.4, 29.7, 29.8, 29.9. 
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Replying to: ljgbjg (Apr 07, 2008 6:39 am)
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Replying to: ljgbjg (Apr 07, 2008 6:46 am) |
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Replying to: parviz (Apr 13, 2008 6:43 pm)  Guess I just like the old fashioned way of calculating mileage. This past week we put on 200 miles of urban/suburban stop and go driving and 245 miles of highway driving at 70-75 MPH with occasional bursts of speed to pass trucks where I really put my foot into it and called on all 268 horses. I had filled it, then stopped in PA and put $10.00 in it (3 gallons) to get enough gas to get us back to NJ where the gas is about $.30- .40 LESS per gallon than in PA or NY state. Once in NJ and the gas $3.05/gallon, I filled it and it took another 16 gallons, for a total of 19 gallons for 445 miles. About 23.4 MPG. Altogether not that bad considering the almost 50/50 mix, and how hard I got on it for bursts of acceleration on occasion. Seems your all around mileage and mine are supporting that achieved by Edmunds' drivers in their long term test - 24 MPG +/- .5-1 MPG. I wonder about something - with older carbureted cars there were adjustements that could and had to be made for altitude - e.g a car in Denver would be set up differently than a car in Miami Beach. What happend now? Do the computer programs in the ECMs automatically calculate altitude and change the fuel mix as necessary? I am running our car primarily near sea level - up the Hudson Valley, with occasional running probably in the 1000-2000 ft above sea level territory. And in comparing our MPG here on this forum, perhaps we should also mention our driving conditions? Someone out in the Rockies is going to be calling on more power more often than someone in Iowa!
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Replying to: ljgbjg (Apr 14, 2008 5:56 am) With regard to the engine's adjustment to elevation, from my limited understanding, the engine does not adjust the "mix." Rather, it adjusts the timing. The mix stays the same, but the timing is advanced or retarded to account for the different speeds at which combustion takes place at different elevations (i.e. different O2 levels). Of course, on all modern engines, this all takes place automatically.
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Replying to: bug4 (Apr 14, 2008 6:59 am) I was under the impression too that the carburetor had to have different jets in it for different altitudes - either leaning out fuel/air mixture because of less oxygen at higher altitudes. Does the ECM do that automatically these days for the fuel injection? |
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In trying to calculate MPG for my new EX-L, i tested the accuracy of the odometer. In a 100 mile test, I discovered it was reading 3% low (showed 97 miles). Have any of you determined the error rate of your odometers? What is the range of error rate? Thanks
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