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Sedans Honda Civic Honda Civic Real World MPG
2058 messages, Last post on Aug 26, 2009 at 6:19 PM
You are in the Honda Civic Forum. Your Hosts are pat & karens
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Replying to: tryin2sv (Dec 17, 2007 9:14 pm) I now have around 6500 miles on my 08 Civic Automatic.. Averaging between 29 & 31 MPG. 80% Hiway... I was told by my sales and service guys (after I purchased of course) that teh mileage is what I should expect.... Sorry to say, I traded from an Accord to the Civic for the mileage and made a huge mistake. My 02 Accord was getting between 27 and 30 with much more room.
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Not to worry, after it is broken in it def will get better mileage. You should have considered the regular civic, lx model, gets much better mpg. However, it will improve.
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Replying to: caaz (Dec 18, 2007 7:36 am) Best Regards, Shipo |
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I dont know in 2008 if it is still the same shipo....but in the past...the civic ex has ALWAYS had a larger, more horsepower engine in it...i have 15 yrs of books (buyers guides), that show a slightly higher horsepower each time its an ex....thats usually always been the difference... the higher horsepower and the sunroof... p.s. my sister has an 05 civic, as long as she stays at 70mph or under on a trip, she always gets 40 MPG, as soon as she crosses over 70, it drops, and she averages 34 mpg overall..
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Replying to: caaz (Dec 18, 2007 8:02 am) |
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Replying to: mjsten (Dec 18, 2007 6:10 am) So for example, I am swagging that you probably owned the 02 Accord. If that is/was so, the biggest stumbling block would/would have be/been the monthly payments. On the fuel mileage issue alone, you can buy a whole lot of commute fuel at that monthly rate (300/400 per mo  3.25 per gal) At that point, you'd have to doing almost exponentially more miles or the next vehicle you are considering gets a min of 2-3x better fuel mileage- ideally 3-4 x. I think you would agree, those are very high obstacles. (metrics) In the case you describe, keeping the 02 Accord 5,10, dare I say 15 years, (past a normal 5 year payment cycle) would have saved you up to $24,000, $48,000, $72,000 dollars, respectively. The good news going forward, you have a (close to in your case/ will already be driving and own a) 35 mpg vehicle. The other is you see now the wisdom and utility of having far less money in vehicles. Since your Honda Civic probably has the chain driven timing belt, if you see the utility of keeping it longer, then the only thing I would do is to have the chain inspected at 225-250,000 miles, and have it replaced, if so warranted. I have not studied the technical data to see if the design is a NON interference type design: as surely MY 2004 Civic is an interference design; aka, almost certain CATASTROPHY if the timing belt snaps.
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Replying to: tryin2sv (Dec 17, 2007 9:14 pm) I have been trying to find some repeatable driving conditions and have a few hwy speed/mileage results with no wind, mostly level with little elevation difference, 35 psi in the tires. 55 mph 51-53 mpg, 65 mph 45-48 mph, 70 mph 38-40 mph. These were on cruise control and are averages over several runs, using the ScanGuage II. This gadget has been reading very close to tank mileages calculated from tank fills so I have some confidence in it's readings. Btw, no wind isn't easy to find nor tell unless you stop and step out of the car. Also small slopes can be difficult to see but will sure show up in mileage readings. I have no idea how to compare city mileage results. My overall mileage is over 40 but is probably something like 95% hwy 5% city. I have yet to burn a whole tank in a city but have seen mileage averages under 30 mpg on the ScanGauge. |
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Replying to: ruking1 (Dec 18, 2007 8:55 am) |
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Replying to: ras314 (Dec 18, 2007 9:06 am)  Should have said mileage hasn't seemed to increase after 9000 miles. Also most of my mileage has been at 5000 to 6000 ft elevation. |
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Replying to: ras314 (Dec 18, 2007 9:06 am) ..."I switched to Mobil 1 around 6200 and show 70% oil life left."... This is HUGE as the OLM is calibrated for the CONVENTIONAL 5w20 Honda specified oil with a TBN of 7 with no provision for calibration for synthetic oil Mobil One 0w20,5w20) or operatively, a TBN of 12. So (given your quote) your consumption rate is 6200/2.1= 2,952 miles per TBN. If you were to keep the oil to ZERO TBN (or some safety factor usually), The lightness on the vehicle indicates a OCI of 20,000 miles!!!!!! This is with, I repeat CONVENTIONAL OIL! So the same math with a 12 TBN comes out to 35,424 miles OCI's!!!!! .These are absolutely awesome numbers!! I would just do a baseline UOA at say 10,000/20,000 miles and going forward do trend UOA's to see if you are on track. So if you just do the 10,000 miles OCI's or the OLM you will almost have as much safety factor left as you had consumed !!
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