Last post on Mar 25, 2013 at 5:51 PM
You are in the Honda Civic Hybrid
What is this discussion about?
Honda Civic, Hybrid Cars, Fuel Efficiency (MPG), Sedan
#473 of 540 Re: 2008 Honda Civic Hybrid [gillster]
Dec 04, 2009 (9:01 am)
I live in southean Idaho and get 50 mpg spring and fall, 46 during the summer with the A/C on and the lowest of 37 during the winter when temps drop below freezing.
I dont think the drop in cold mileage is so much a problem due to the electral side of the powertrain. The internal combustion engine has always had been inhertently inefficent in cold weather,especally during warm up. The old carbureted engines used to have to be choked of almost all air to be able to get to start and run when cold, and the incoming air had to be heated to eliminate hesitation during acceleration. The new fuel injected engines are no different. The injectors are dumping fuel during start-up and warmup to get things running. Any why is this? Liquid gasoline does not burn. It needs to be a vapor or near vapor. when an engine is hot, and the intake air is hot, the fuel sprayed from the injuctors turns to vapor or at least stays in the form of small dropplets. Then the engine is cold, and the air is cold, the fuel does not vaporize, but tends to turn back into liquid fuel. By increasing the fuel mixture by llke 200% when cold, there is enough vaporized fuel to make the engine run properly.
Add the fact that all of the liquids in the engine are thicker when cold, adds resistance to the powertrain.
The Hybred engine is extreamly fuel efficent and can get 48mpg on the freeway with only using the battery to assist in acceleration. but everything that can cause resistance to the car (weight, low tire pressure,wheels missaligned, excessive speed,wrong motor oil, ect) will cause a dramatic drop in mileage.
#474 of 540 BAD Mileage on my 2006 Hybrid
Dec 04, 2009 (2:50 pm)
I have posted this before and I still don't get anywhere near 40 MPG on a regular basis. We just took a 1,600 mile trip to NY. I average 39.5 MPG for the entire trip. That was with me contstantly watching the speedometer and never flooring the gas pedal. In town we only receive around 27MPG.
Of course the Honda dealer has never offered any help with this problem. Everytime we take it in for service they only shrug their shoulders and tell us the car has no problems.
#475 of 540 Re: 2008 Honda Civic Hybrid [mrwaug]
Dec 04, 2009 (3:11 pm)
Anyone that gets an average of 50 to 46 mpg in a Honda Civic Hybrid needs to take the car to an independent testing station, have it torn apart, and see what secret component has been installed on the vehicle to enable it to get such excellent gasoline mileage. It's either that, or the car is being driven on a different planet, (one with much less mass than Earth). The fuel performance, in extremely cold weather, is an excellent dissertation, but sounds like a bunch of junk science.
#476 of 540 Re: 2008 Honda Civic Hybrid [frednjudik]
Dec 09, 2009 (10:08 pm)
I bought a 2009 HCH. During the summer I routinely got 48mpg. Starting this fall where there was a lot of rain, I started to see 44mpg. I suspect the windshield wiper usage and headlight must have cost the mileage. My commute is half local half highway, but rarely picks up speed on highway. I drive a little bit on the slow side, but keep up with the traffic from the traffic light.
#479 of 540 Re: Class Action Suit against Honda (MPG on Civic Hybrid) [nilesboy]
Dec 17, 2009 (3:20 pm)
51mpg spring/ fall wo a/c 47mpgsummer w a/c temp 90+ 39 winter temps below 35 degrees yearly average 45mpg. 2007 Civic 20000 miles, original tires.
Dec 18, 2009 (4:09 am)
These forums cannot be used to organize legal actions, so please do not post information trying to organize class action lawsuits, links to lawyer's sites where you can join a suit, etc. as those posts will have to be removed.
If you have any questions about this, please click on my username and drop me an email and I'll be happy to discuss it there.
#482 of 540 Re: 2008 Honda Civic Hybrid [frednjudik]
Dec 20, 2009 (10:17 am)
I've had my 2008 HCH for 13000+ miles now and I get about 44 MPG. I keep the tires inflated about 2 or 3 PSI above manual, use 'name brand' gas, don't accelerate hard and coast when possible (heading to traffic light -- no need to hurry up to come to a complete stop!). Also, I try not to go over 65 on the highway, but usually keep it below 60, as drag increases exponentially (accelerating from 55 to 65 uses more fuel than going from 45 to 55). My commute is local ( ~15 miles, round trip), so I don't do a lot of highway driving, but when I do, I get over 50 MPG. You cannot drive *any* car like a sports car and get great gas mileage.
However, during the winter (this is my 2nd with the HCH), my MPG drops (per tank) to around 33-36. Need to check the tires more often (obviously), but the Hybrid engine simply does not perform as well when it is cold. For instance, the engine has to warm up before it turns off during stops (e.g. traffic lights).
At first, I thought perhaps the gasoline 'winter blend' had something to do with it, however we had some nice temps (mid 60's) during November and my MPG went back to 'normal.'