Last post on Sep 30, 2013 at 1:53 PM
You are in the Honda Civic
What is this discussion about?
Honda Civic, Fuel Efficiency (MPG)
#1437 of 2125 Re: Break in Period MPG, Winter Gas [mjsten]
Dec 18, 2007 (8:55 am)
Yes I think the value of a site like this you can post whatever situation and get multiple viewpoints.
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.
#1438 of 2125 Re: Break in Period MPG, Winter Gas [tryin2sv]
Dec 18, 2007 (9:06 am)
For what it's worth I don't see better milage with 9000 miles on the '07 Civic LX manual sedan. I switched to Mobil 1 around 6200 and show 70% oil life left.
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.
#1439 of 2125 Re: Break in Period MPG, Winter Gas [ruking1]
Dec 18, 2007 (9:07 am)
Appreciate the insight, but my problem is that I am NOT getting the 35 MPG, I am barely getting 30. SImply diappointing that,once again, I bought into an advertising inaccuracy.
#1440 of 2125 Re: Break in Period MPG, Winter Gas [ras314]
Dec 18, 2007 (9:16 am)
Sorry, my post isn't very clear, even to me.
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.
#1441 of 2125 Re: Break in Period MPG, Winter Gas [ras314]
Dec 18, 2007 (9:28 am)
You might not see what your data is really telling you, but your conclusion is almost predictable given the fact you/your driving style/environmental conditions are very very easy on the vehicle. This is reflected in very highly standard deviated fuel mpg. Your oil at the mileage indicated has a LOT of active life left. So in that sense you are walking the walk, but talking like you are not very sure. In addition it is remarkable as you get those figures at altitude!!! Altitude as most folks know saps both power and mpg in a normally aspirated engine like our gasser Civic's.
..."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 !!
#1442 of 2125 Re: Break in Period MPG, Winter Gas [ruking1]
Dec 18, 2007 (9:59 am)
I reset trip B at the oil change so just checked the thing. Current miles 9131, trip B 2970 miles. However oil life has been reading 70% for some time, should be clicking down soon. Present oil is Mobil 1, 5w 20 as recommended by Honda I think. I did change the filter though, just haven't broken the habit.
I sort of try to make clear my driving conditions are not typical to most people. Also being a retired old part I am seldom in a big hurry to get anywhere and rarely exceed speed limits. However the payback is beginning this winter, unless the mud is frozen the Civic won't make it to the hwy or back I have use my 4 W drive Dakota.
#1443 of 2125 Re: Break in Period MPG, Winter Gas [ras314]
Dec 18, 2007 (10:09 am)
I am not sure how comfortable you are with these, but two things:
1. Change the oil filter at the Honda oem recommended "every other oil change" or in my case 20,000 miles. Indeed if you are so inclined (since you use Mobil One 5w20) change oil AND oil filter at 20,000 miles!!
2. Switch to 0w20 Mobil One. You MIGHT notice a .5 mile increase. But given what you are getting for mpg, it will probably just shorten the "dry lube" cold weather oil flow. There will be NO sotp feeling.
#1444 of 2125 2007 Civic EX Poor Gas Mileage
Dec 20, 2007 (9:45 am)
We bought our '07 Civic a couple of months ago primarily for achieving better gas mileage. We almost bought a Prius and now wish we did.
The car is great except for the consistent mileage of 21-22 mpg. Maybe a bit higher with all freeway but 21-22 mpg for normal metro driving. Revised EPA now show 25 city and 36 hwy.
This is horrible for a little car. My 6-cylinder Sienna approaches 19 mpg regularly. I could have an SUV and get similar mileage to our Civic.
I feel ripped off and won't recommend this car based on mileage to anyone.
Anyone else getting poor gas mileage?
#1445 of 2125 civic low mileage
Dec 21, 2007 (5:11 am)
it sounds like one needs to change driving habits. Accelerate slowly coast as much as you can up to red lights. I think its a matter of the way you drive....i.e. you just stated you can even almost average 19 with your Sienna. To illustrate my point.... on 12-19, just two days ago i borrowed my wifes...yes..you guessed it..SIENNA... used it for a couple of hours. Ran from Orange County to Los Angeles, about 50 miles each way, plus about 10 more straight city. Kept it at 65 mph all the way there..went real easy in city driving.. coasting to lights all i could. Averaged 33.6 mpg. In my civic on a trip like that...driving identically, would have returned me between 41 and 42 mpg, its all about how you drive. Hope this helps
#1446 of 2125 Re: 2007 Civic EX Poor Gas Mileage [morrisos1]
Dec 21, 2007 (8:40 am)
"Maybe a bit higher with all freeway but 21-22 mpg for normal metro driving. "
Something bad wrong with that freeway mileage. May need the car checked? Even the metro sounds out of line.
As somewhat of a comparison, with a 6 cyl 4w jeep cherokee I routinely ran 25 mpg mostly hwy and average a bit over 40 over the same route with the civic.