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I remember an SAE paper that has discussed ideal design for mpg. The last time I found that paper it said that the fuel injection and mapping was designed to maximize mpg at 48 mph. Again I can't find that reference and I'm not sure what the EPA testing and car company guidelines are for testing these days.
Congrats on the 60 mpg.
HowStuffWorks says:
The EPA doesn't just drive the vehicle to determine how many miles per gallon it gets. Each new car and truck is tested on what's called a dynamometer, which is like a large treadmill. While the engine and transmission drive the wheels, the vehicle never actually moves -- just the rollers upon which the wheels are placed. A professional driver runs the vehicle through two standardized driving schedules, one each to simulate city and highway driving conditions, and ensures he or she is maintaining the mandated pace via a real-time computer display.
The "city" program is designed to replicate an urban rush-hour driving experience in which the vehicle is started with the engine cold and is driven in stop-and-go traffic with frequent idling. The car or truck is driven for 11 miles and makes 23 stops over the course of 31 minutes, with an average speed of 20 mph and a top speed of 56 mph. The "highway" program, on the other hand, is created to emulate rural and interstate freeway driving with a warmed-up engine, making no stops (both of which ensure maximum fuel economy). The vehicle is driven for 10 miles over a period of 12.5 minutes with an average speed of 48 mph and a top speed of 60 mph. Both fuel economy tests are performed with the vehicle's air conditioning and other accessories turned off.
Last edited by Jazu; 10-29-2019 at 11:58 AM.
Reason: I like editing
Here in arizona, my mpg guage says 44mpg, i try not to go over 65 on freeway, i just put on cruise control then, and on the streets i shift slightly early as to always keep the mpg eco lights at green vs blue, i feel sad for the person behind me because our cars look fast but really being conservative makes them slow
I'm not complaining.
But with both my automatic 2010 Honda Fit Sport and today's 2016 Honda Fit EX with CVT transmission, I pretty much get the standard EPA stated for the vehicle. Which for my CVT EX is 32 city, 38 highway.
I have never really got anywhere near a 60 mpg stretch. I think I've inched up to 40 mpg on long highway drives, but that's about the best I can do.
I'm not complaining.
But with both my automatic 2010 Honda Fit Sport and today's 2016 Honda Fit EX with CVT transmission, I pretty much get the standard EPA stated for the vehicle. Which for my CVT EX is 32 city, 38 highway.
I have never really got anywhere near a 60 mpg stretch. I think I've inched up to 40 mpg on long highway drives, but that's about the best I can do.
Take a look at Fuelly.com. Go down the left column top "Browse vehicles. You'll see that newer cars get better mileage. My son's 2019 gets better mileage than my 2015. I really work at it, and he doesn't.
Take a look at Fuelly.com. Go down the left column top "Browse vehicles. You'll see that newer cars get better mileage. My son's 2019 gets better mileage than my 2015. I really work at it, and he doesn't.
But there doesn't seem to be a big difference in overall average for the span of Fits ages 2015-2019. All seem to be in a close 34-35 MPG range. With for some reason the 2017 year being the lone exception at 33.8.
It makes logical sense that newer vehicles as a total average are going to get better gas mileage. A brand new vehicle of course has EVERYTHING on it brand new. Shocks, suspension, tires, spark plugs, as a vehicle ages all these things deteriorate to an extent even with regular maintenance.
Like I said, I'm not complaining, I'm getting close to EPA numbers. But I've never got the represented in this thread "Hybrid" type of return. I didn't get them on the first day off the lot...or 3 years later.
The telltale sign of good economy is whether your Fit can go 500+ miles in one tank of gas (11.3 gallons). Yes, I have done it twice. Single driver alone, US10, CVT cruise at 63 mph. Be careful not to run out of gas in your attempt. Carry emergency gas in a 2 litter coke type container if you feel uncomfortable of running out of gas.
Last edited by wasserball; 10-30-2019 at 08:17 PM.
The telltale sign of good economy is whether your Fit can go 500+ miles in one tank of gas (11.3 gallons). Yes, I have done it twice. Single driver alone, US10, CVT cruise at 63 mph. Be careful not to run out of gas in your attempt. Carry emergency gas in a 2 litter coke type container if you feel uncomfortable of running out of gas.
The Fit however has a reported fuel tank capacity of 10.6 gallons.
Plus I think there has to be better way to determine your fuel economy than trying to reach a mileage goal, that may leave you stranded and having to carry extra gas. Like just hand calculating your MPG and filling up safely and normally.
500 miles on one tank? I drive almost entirely highway, 400 miles a week for my commute and average like 40ish mpg or more usually. I'm lucky if I make it to 350-375 before I feel uncomfortably close to running out.
i call bullshit... i can barley do 500 km...not miles, dont know how you guys are getting 500 miles per tank. 2019 fit sport bone stock running reg gas that has 5-10% ethnol
He's overfilling the tank to be able to go 500+ miles on a tank. I'll leave the merits of that practice for other people to discuss. He can do what he wants to his car
My best full tank MPG I've done is 47.848 by going 340.200 miles and filling up 7.110 gallons. This is hand calculated versus going by the on board computer which is always wrong from my experience. So if I multiply 47.848 MPG by 10.6 gallons of the advertised tank size, I can do 507.189 miles LOL
One thing to mention on mine is I'm running 205/50/16 so I should have more rolling resistance than using the stock size tires. Overall diameter is very close to stock size.
just took this picture last night to show my brother
i call bullshit... i can barley do 500 km...not miles, dont know how you guys are getting 500 miles per tank. 2019 fit sport bone stock running reg gas that has 5-10% ethnol
Location: Foothills of the Smokies, east Tennessee
Posts: 943
Not gonna call anyone out on any claims, I can't speak to that. But, manually calculated, around town I can get 33-36mpg (depending on how much I jazz it) around, here - lots of hills and twisty roads and plenty of traffic, and 40-43 mpg on the highway, most usually vacation roadtrips with a/c on. I'm quite content with that.....even though 6th could've been a little taller for true hwy driving, but...it is what it is and it ain't bad, imho.
10-29-2019, 11:55 AM
