23 mpg, this single digit weather is taking its toll and the gas prices continue to rise. One things needs to stop going up and the other needs to go down. At one point my OBC said the mileage was almost 20.0 mpg and then it went up to a hair over 25 mpg, but when I gassed up today and pumped 4.777 gallons the mileage was 23 mpg.

 

Officially Dec. 15 we have winter gasoline, my mpg is down too not as bad yours 23 mpg is bad. I would check your tires, fluids and take out any extra weight that not needed. Run the defroster only when needed and switch to cabin heat. When I am on the highway I have the fan off and even in the extreme cold there enough heat. I am getting 30-32 the last 2 fill ups and I did alot of idling and short trips. Here is good info the epa put out of the different gasolines http://www.epa.gov/otaq/regs/fuels/r.../420r08002.pdf its a little out date but gives a time line of the different gasolines. We have the complex 2 rfg. I also am wondering if e15 is out it would raise the rvp without using more butanes.

 

My mileage went up to 26.4 mpg from 22.9 mpg, same route and same gas station too, I like do that to keep it consistant. My mileage could be less than yours due to the fact you've got stock tires/wheels, right? With it going up maybe the ECU is finally making the changes to adapt for the better fuel.

 

Its amazing what happens when the temps double, going from a high of 15 to 30-33 degrees has netted me a pretty nice gain, going from 22.9 mpg to 29.2 mpg and this time the OBC showed 29.3 mpg average, pretty damn close. The gas prices continue to go up, but I'm sticking with BP Ultimate though.

 

My mpg is up too, Honda's motors like temps around 40 to make the best mpg. Any thing below that temperature its mpg is very inconsistent. I dont know if you seen this but I wanted to repost it here. Efficiency and Octane of various Gasoline blends from "pure" Gasoline to E85 - Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com

 

I was getting over 37 MPG at 90MPH driving at temperatures in the low 40s and high humidity.... My car was stock at the time except for axle back, SAI and a resistor devise on the intake air temperature sensor.

 

I haven't got gas yet so not sure of the mpg but it was getting better than when it was 0 out. 40 degrees and up to 80 or so seems to be the temperature range the Honda is the most efficient.

I use to have a Chevy Malibu v6 that got as good or better mpg than some are getting with their Fits. I ran synthetic oil and BP and was getting 34-35 mpg. Thats why I use it and recommend it, but I also know every situation is different and driving styles,temp, and alot of other variables are involved.

Most people dont put nothing other than regular because they say it costs too much, it can but getting 28 mpg more out of a tank is not 2.8 percent its more like 6-7 percent the cost difference and a better, quieter,cleaner running car. You have to look at it like this I get 300 miles on 10 gallons and I get 28 more miles. How much does 28 miles of regular cost compared to premium 10 gallons.

If regular gas was 87 octane plus 10 percent ethanol the octane would be 90.5 and thats what I would be using then, The problem with regular is its water down using lower octane stocks and then ethanol is added to it to raise it to 87. So premium is 93 octane and I have a safety margin of 1.5 octane points if it separates. Keep in mind they raised the ethanol to 15 percent because of the faster,clean burning effects it has on the motor and environment. It has not been released yet because of lawsuits but has been approved for 2007 and newer cars.

 

My wifes civic got 24 mpg with 50/50 driving on regular. I am disappointed because the van got similar mpg and is a big 6 cylinder and is double the weight. My civic on premium with similar driving gets in the 30-33 and could have been higher because it warmed up a little from that mpg.

 

29.3 mpg, very consistent....too bad the prices aren't!

 

I heard today on the radio, gas prices are going up to 5 dollars a gallon with in a year. Gas prices were 1 dollar cheaper last year and there is less traffic so the demand is low and the prices should be low too. http://www.platts.com/RSSFeedDetaile...ed/Oil/6699332

My mpg is 29 when real cold, but the last 2 tanks were 30-32. I noticed it going up today on the SG.

 

The 29 is better than the 23mpg. I am glad its going up with BP and should be better in the summer. You can try driving a little faster in the accelerating up to speed and re check mpg. MY mpg is going up and I think its because when you drive slow up to speed it takes longer and the engine is under higher load so more gas is used. With the higher torque in the lower rpm and your CAI your mpg will go up.

 

When the gas prices hit five bucks a gallon, I'll be looking for you guys on the motorized bicycle forums. Seriously, I am going to putting at least one together real soon. My son has one and is wanting me to do some performance modifications on it for him. He has already ripped half of the spokes out of his rear wheel by letting the clutch out with his revs too high.

 

I got a slight drop this week of 1.6 mpg

 

Try using Bp mid grade, Your cold air kit is lowering the Intake temps, so more fuel is being used. Premium gas is also lowering the engine temps because you drive to much stop and go and short trips. Combined its lowering your mpg.

My mpg is up I have almost summer mpg because it warmed up last week. Thursday on the way home the SG said 38 mpg and I have 230 miles and still have more than a half a tank.

 

I just thought about a thread a guy did a few years back that had used some type of plastic to block of the airflow through through the radiator that winter and was getting some real good mileage... I am pretty sure that lower AITs aren't going to effect the A/F ratio because colder air is more dense and has a higher saturation of oxygen so the ratio will be the same and less throttle is needed to maintain speed... Low water temperature will cause the mixture to remain rich until the engine has heated it up ... There is hot water heating the throttle body unless it has been disconnected so really all the cold air intake temperature is doing after the temperature of the coolant is at operating temperature is increasing the ignition advance... If I had to start my car numerous times a day I would block off the air flow through the radiator with cardboard to hasten the warm up process an see if that doesn't help out some.... You guys up north have a lot to contend with during the colder months.

 

Short trips in winter really hurt mpg. When my mpg get lowers than I like it I change the gasoline to mid-grade and then back to premium and mpg goes up. That only happens in the winter once in a while. The mid-grade mpg is actually worse but then the premium mpg is higher on next tank. I think it has to do with mid-grade that is more fuel is added and the ecu adjusts the long term fuel trims. Its like resetting the ecu except you dont disconnect the battery.

 

27.1 mpg last week and I too heard about the $5.00 a gallon gas too, good thing I've got a Fit

BP Ultimate is about .20 more a gallon, any reason as to why?

 

I changed my driving shoes from gym shoes to slip ons with a rubber tread on the bottom and my mpg is up to 34 average on SG. I know that sounds weird but I noticed that when I am cruising the SC would read 30 mpg so I would let of the pedal a little and still hold the speed and the mpg went up to 45 mpg at 65 mph. Its been cold out side and I am happy with that mpg now.

BP Ultimate around here is .24 cents higher than regular, I believe its because ethanol is not being used and the taxes are higher. Typically the cost is 6-10 cent for the higher octane and the rest is taxes and additive and maybe profit but BP owners pay an extra 3000 a mouth for that fuel so they have to add it in some where. If you wanted to make your own premium and they didn't do it for you it would cost 4.50 a gallon. 6.00 for unleaded racing fuel 100 octane and 3.00 for regular. 187/2=93.5 So I think premium is a good deal.

 

BP is a good deal in that it is a domestic product, no foreign oil, though it seems their prices, like everyone's, are governed - in part - by OPEC. Can't find BP in my area/region, and all stations price regular at $3.25+...

You also seem to have discovered the Fit Eco Driving Technique by changing your shoes_

I've learned that a light foot on the pedal gives tremendous results - drive for economy - coast while driving - enough pedal to get it going then wait a bit for it to get there. Pedal to the floor really isn't going to get it there that much quicker, and it really isn't that kind of car anyway, however, anyone can drive it like that if they want to think it is.

K_C_

 

It sounds right to me Glenn... I bought some super lightweight driving shoes awhile back and have been wearing them recently... I wasn't able to let my clutch out quickly enough to keep it from slipping when I was shifting quickly while wearing shoes with thicker soles and I was on the throttle more than I needed to be also... Modulating the brakes was difficult also... Next best thing to driving bare footed but not too great for shopping at Sam's, the lack of a real heel on them causes me to have back pain if I walk or stand too long while wearing them.