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Honda Civic Real World MPG

2058 messages,  Last post on Aug 26, 2009 at 6:19 PM

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What is this discussion about? Honda Civic, Fuel Efficiency (MPG)

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#1837 of 2058 Re: [cjhepburn] by ruking1 Oct 19, 2008 (6:18 am)
Replying to: cjhepburn (Oct 19, 2008 4:53 am) Obviously while results WILL vary, most Honda autos get (EPA ratings) 1 mpg LESS than manuals.   Under the conditions that you say you drive the car, I would swag those conditions are the BEST for MPG, (least) wear, longevity, etc etc. In effect you are driving the car in the almost exact (ideal) design parameters (sweet spot). You might also want to check back to survey link I posted some time/posts ago, to see where your mpg results fall. I think you will be pleasantly surprised. Your results fall withing app 95-98%, aka not many folks get the mpg you report. Replies to this message: dantz (Oct 20, 2008 1:13 pm) ruking1 (Oct 20, 2008 1:44 pm)
#1839 of 2058 Re: [ruking1] by dantz Oct 20, 2008 (1:13 pm)
Replying to: ruking1 (Oct 19, 2008 6:18 am) "Obviously while results WILL vary, most Honda autos get (EPA ratings) 1 mpg LESS than manuals."   Not at highway speeds. Because of it's taller 5th gear the LX auto actually gets better highway mileage than the LX manual (36 vs 34 mpg) Replies to this message: ruking1 (Oct 20, 2008 1:44 pm)
#1840 of 2058 Re: [dantz] by ruking1 Oct 20, 2008 (1:44 pm)
Replying to: dantz (Oct 20, 2008 1:13 pm) Indeed 2004 that was not the case. 2009 models (constant improvement) have 36 H auto vs 34 H M. and 25 c auto vs 26 c M, so you still would be half wrong. The bottom line is there are penalties /corrections for automatics vs manuals.   There is an oxymoronic thing going on and that is if one does mostly to 100% highway driving, it makes more sense to get a manual as it is cheaper, lighter,with less parasitic losses, and a manual is way cheaper to repair when it/they go out. Indeed the same gearing of which you speak would amplify the M advantage.   However if I got 34/36 mpg in my 04 Honda, I would think something amiss. 38-42 mpg. ( in a normal commute auto) So while I have not run like models (sans A/M )side by side, there is no doubt in my mind I would get at least 1 mpg better in a M. But as I have said that is one of the penalites.
#1841 of 2058 Re: [cjhepburn] by cjhepburn Oct 21, 2008 (5:22 pm)
Replying to: cjhepburn (Oct 19, 2008 4:53 am) My more aggressive driving MPG turned out to be 36. Same commute, 97% hwy 59 miles each way). Speeds 75-88 depending on what the traffic allowed, a couple of runs up to 98, and stomping on it out of entrance ramps (4 each way, hwy to hwy transitions). Still not bad. For this next tank, I'm driving like a pussy, nice and slow entering highways and keeping the speed under 72, more like 65-70. If this doesn't hit 40MPG nothing will. I wonder what the mileage would be if gas didn't have ethanol mixed in. Replies to this message: ruking1 (Oct 21, 2008 6:36 pm) cjhepburn (Oct 27, 2008 4:32 am) kipk (Oct 28, 2008 3:18 am)
#1842 of 2058 Re: [cjhepburn] by ruking1 Oct 21, 2008 (6:36 pm)
Replying to: cjhepburn (Oct 21, 2008 5:22 pm) Yes this is an interesting design anomoly. We have taken longer road trips San Jose, CA to Santa Barbara/Los Angeles and have gotten virtually the same mpg 38-42 mpg as a shorter distance commute (28 miles each way) 70-80 mph.
#1843 of 2058 1995 Honda Civic EX MPG by baccus49 Oct 24, 2008 (2:14 pm)
My 1995 Honda Civic EX 1.6L DOHC VTEC Automatic is rated for 29 MPG combined on the old ratings and 26 MPG on the new 2008 ratings. I achieve a 33 MPG on a 90 day average. MPG is tracked on 4 different sites and I would consider myself a conservative hypermiler. Tire pressure is at max sidewell. I typically drive the speed limit which is 65 MPH or sometimes 55-60 depending on traffic. I've hit 40 MPG on 4 occasions and have had several tanks above 35. If you're not getting the MPG on the new 2008 ratings you're doing something wrong. Newer Civics than mine get better gas mileage so you should be beating my MPG. The older civics such as the Civic VX gets 40+ MPG.
#1844 of 2058 by kenlw Oct 24, 2008 (5:10 pm)
i believe the newer civic automatics have a torque converter lockup that eliminates TC slip at steady speeds. This will have a significant impact on highway mileage on an auto.   Then, if the gearing is actually taller (i think it is) than the manual, the auto's highway mileage could easily be better.
#1845 of 2058 Right in the middle by ruking1 Oct 25, 2008 (7:26 am)
Commute mpg range has for the life of the car (74,000 miles) been between 38-42 mph. In the same commute and NOW with two people (instead of one) it has settled into 40 mpg. (middle of the range: 38,39,40 41,42.) Researching msg # 1416, current conditions put (1.24,+2.11)=3.35% folks reporting better mpg. I would swag the Civic is doing the job for which it was designed (and our intended use: plain jane commute) pretty well. While we drive (hopefully safely) for the conditions, we do no real fuel hypermileage techniques. (unless you can call poor rush hour traffic a hyper mileage situation)
#1846 of 2058 Re: [cjhepburn] by hammer00 Oct 26, 2008 (5:00 am)
Replying to: cjhepburn (Oct 19, 2008 4:53 am) Transmissions 5-Speed Manual Transmission Gear Ratios  1st: 3.143  2nd: 1.870  3rd: 1.235  4th: 0.949  5th: 0.727  Reverse: 3.308  Final Drive: 4.290   Compact 5-Speed Automatic Transmission Gear Ratios  1st: 2.666  2nd: 1.534  3rd: 1.022  4th: 0.721  5th: 0.525  Reverse: 1.957  Final Drive: 4.440 Replies to this message: ruking1 (Oct 26, 2008 6:38 am) ruking1 (Oct 26, 2008 9:04 am)

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