EcoModder.com

EcoModder.com (https://ecomodder.com/forum/)
-   Hypermiling / EcoDriver's Ed (https://ecomodder.com/forum/hypermiling-ecodrivers-ed.html)
-   -   Max % over EPA by driving changes? (https://ecomodder.com/forum/showthread.php/max-over-epa-driving-changes-23639.html)

k-vette 10-11-2012 01:32 AM

Max % over EPA by driving changes?
 
I wanted to see if anyone had guesses on how much over EPA you can achieve by driving alone. Guesses? :confused: Perhaps there's somewhere to check mileage by cars that are stock, but I didn't see it.

I ask because I'm always "waiting" to do aero or other mods until my driving changes have maxed out the mileage. Unfortunately (or not) I haven't found an end yet!

I started at 32mpg (rated 31) in my 2006 Corolla. It has over 200,000 miles now and everything works perfectly. When I started, I got up to 35, then 38mpg tanks. I thought 40mpg was going to be nearly impossible. I was wrong... My last few tanks were 43, the first quarter of a tank I was over 50 this time around, now I've dropped to about 47 according to the meter, which is pretty accurate. Looking forward to the fill-up, but it's going to take awhile! Sitting around 1/3 tank at 200 miles.

As far as mods go, I haven't even checked the tire pressure since new tires were put on a few months ago. (Costco did fill with nitrogen, so they've never looked flat)

I'm starting to think this Corolla is a bit under-rated. :thumbup:

bestclimb 10-11-2012 03:22 AM

With fuel consumption information, max sidewall pressure in the tires I am 48% over EPA.

The Mods will improve what you can make the car do as well so I would not wait if you are going do do them.

redpoint5 10-11-2012 03:52 AM

This question has far too many variables to illicit a useful answer. It depends on the car, the type of driving, the environmental conditions, etc.

If I wanted to take eternity to travel the 70 miles I often take to visit my parents and grandparents, I'm sure I could achieve 50mpg. As it is, the best I've ever done for a full tank is about 33mpg.

My signature boasts my % over EPA, and this is achieved with a lower octane fuel than recommended and no mods. This winter I plan to try a grill block, but would like to wire in an LED that indicates when the cooling fans engage.

SentraSE-R 10-11-2012 04:29 AM

A heads-up driver in a MT car can get 75% over EPA tank after tank in a variety of driving conditions, from driving changes only. Under ideal conditions on a regular route, he/she can average 110% over EPA.

AT drivers will do much worse - about 40% over EPA in mixed varied driving, perhaps 60% in ideal conditions.

I should know, because those are my figures with different unmodifiedcars.

Gealii 10-11-2012 08:22 AM

Quote:

Originally Posted by bestclimb (Post 333259)
With fuel consumption information, max sidewall pressure in the tires I am 48% over EPA.

The Mods will improve what you can make the car do as well so I would not wait if you are going do do them.

is your escort a 2 door or 4 door?

rmay635703 10-11-2012 11:10 AM

I'm only 38% over EPA mixed driving but its due to the fact I don't have a kill switch and typically just use speed modulation within limits on the road and early shifts with occasional eoc.

Flakbadger 10-11-2012 11:15 AM

Well my friend, I do next to no EOC (Maybe once per tank, just for ****s and giggles), lots and lots of coasting, and only drive as slow as I think I can without inconveniencing other drivers, and I don't think I can do very much better.
I would love to buy an Ultraguage but I lack the income to drop 60 bucks on something so frivolous, and don't know that I could really get much above what I'm getting now.
As far as aero goes, it depends on what you want. I have been itching to make a grille block and rear wheel well covers, but I am unwilling to have something that looks slapdash in execution... So I haven't done anything yet for lack of time to make it look "good."
I am not disappointed with my results with those restrictions. As others have mentioned it depends on your car.

roosterk0031 10-11-2012 12:24 PM

Stratus peaked at 63% over epa, no mod's but it deleted AC and PS on it's own. Set cruise at 55, neutral coast into stops.

Cobalt is at 45%, I think if I add cruise it will do better as I go to fast sometimes.

Daox 10-11-2012 12:39 PM

I was able to hit just over 100% over EPA rating on my Paseo without any mods besides tire pressure. I was just shy of 60 mpg on my 29 mpg rated Paseo when I started modding it. Now my wife drives it and it gets nowhere near that. :)

To get that high you absolutely need to use pulse and glide with engine off coasting, and avoid the brakes like a plague. After you've achieved that, the main gain is from reducing your speed.

Fat Charlie 10-11-2012 12:45 PM

Almost all your gains will be from driving. Any gains from mods, on the other hand, are always there even when you're not paying attention. Paying attention to things like tire pressure only takes a few minutes every once in a while and pay off all the time- there's no sense letting your hardware work against you. You did get LRRs a few months ago when you needed tires, right?

bestclimb 10-11-2012 02:11 PM

Quote:

Originally Posted by Gealii (Post 333295)
is your escort a 2 door or 4 door?

4 door.

PaleMelanesian 10-11-2012 02:16 PM

Some cars are relatively underrated by the EPA test and can do more, some not so much. Take one of those underrated cars, an experienced hypermiler, ideal routes and conditions, and ...

3.5x epa best commute (3.2x round trip)
2.9x epa best tank
2.4x epa year-round average

For an example of how much the specific car matters, my best ever in the Odyssey was only 1.8x epa in ideal conditions. 1.5x is more common for me.

k-vette 10-11-2012 04:18 PM

Quote:

Originally Posted by Fat Charlie (Post 333339)
Almost all your gains will be from driving. Any gains from mods, on the other hand, are always there even when you're not paying attention. Paying attention to things like tire pressure only takes a few minutes every once in a while and pay off all the time- there's no sense letting your hardware work against you. You did get LRRs a few months ago when you needed tires, right?

I was looking at the ecopia tires, but ended up going with the best deal at Costco at the time. Free rotations, balance, etc. I felt that the price difference would be the most cost effective thing to do, albeit maybe not best for FE.

Interesting comments. I think what I've pulled out of this is that with my driving style (several miles of freeway at 60mph, 45mph commute the rest of 20 miles, try not to hang people up, etc) I'm nearing what I'm "willing" to do with a stock car. Time to start modding and seeing more increases. If I can get a consistent 50mpg+ commute I'll be happy.

serialk11r 10-11-2012 06:01 PM

Quote:

Originally Posted by PaleMelanesian (Post 333358)
Some cars are relatively underrated by the EPA test and can do more, some not so much. Take one of those underrated cars, an experienced hypermiler, ideal routes and conditions, and ...

3.5x epa best commute (3.2x round trip)
2.9x epa best tank
2.4x epa year-round average

Yup this is really the biggest thing. One obvious example that comes to mind is the 2ZZ Lotus Exige. The Celica GTS has a longer 6th gear and slightly less drag but smaller tires/wheels for 3 more highway mpg, giving it a 23 overall rating. The Exige is at 20/22/26. However, these cars have an 8500rpm redline so the EPA test pretty much wastes a crapton of gas chugging along at unnecessarily high engine speeds. With a 2000lb curb weight or so and a relatively modest 1.8L displacement (it's not low for economy car standards but it's pretty low) and 6 speed gearbox, I think most of its leadfoot owners get 30mpg not paying attention to fuel economy at all, shifting at high rpms, driving 80mph down the freeway (reportedly this gets 30 mpg and having an MR2 spyder with similar rpms and displacement, I think it's actually about right).

Careful driving around the city should be able to pull high 30s to 40s, depending on what you call "city", and going slower on the highway should get 40mpg with no pulse and glide. Pulse and glide with a relatively low average speed will give absolutely scary fuel economy numbers.

This rule pretty much applies quite well to any high rev low displacement engine equipped car. The AP1 Honda S2000 is rated at 20mpg average. Again most owners are leadfoots that have no idea about fuel economy driving, and they get 25-30mpg average.

redneck 10-11-2012 07:38 PM

Quote:

Originally Posted by Flakbadger (Post 333315)
Well my friend, I do next to no EOC (Maybe once per tank, just for ****s and giggles), lots and lots of coasting, and only drive as slow as I think I can without inconveniencing other drivers, and I don't think I can do very much better.
I would love to buy an Ultraguage but I lack the income to drop 60 bucks on something so frivolous, and don't know that I could really get much above what I'm getting now.
As far as aero goes, it depends on what you want. I have been itching to make a grille block and rear wheel well covers, but I am unwilling to have something that looks slapdash in execution... So I haven't done anything yet for lack of time to make it look "good."
I am not disappointed with my results with those restrictions. As others have mentioned it depends on your car.


Frivolous...???

I don't think so...

The instant feedback it provides tells you whether or not what you are doing is for the better or worse and is worth every penny.

The money saved will more than pay for itself in short time.

Buy one and try it. The worst that can happen if you don't like it would be selling it for a few bucks less than you payed for it to someone else.

However, I doubt you'll sell it...;)

>

bestclimb 10-11-2012 10:39 PM

Quote:

Originally Posted by Flakbadger (Post 333315)
Well my friend, I do next to no EOC (Maybe once per tank, just for ****s and giggles), lots and lots of coasting, and only drive as slow as I think I can without inconveniencing other drivers, and I don't think I can do very much better.
I would love to buy an Ultraguage but I lack the income to drop 60 bucks on something so frivolous, and don't know that I could really get much above what I'm getting now.
As far as aero goes, it depends on what you want. I have been itching to make a grille block and rear wheel well covers, but I am unwilling to have something that looks slapdash in execution... So I haven't done anything yet for lack of time to make it look "good."
I am not disappointed with my results with those restrictions. As others have mentioned it depends on your car.

after selling my civic where I learned a bunch of good habits with an MPGuino I started driving the escort. our best tank prior was 38mpg with no instantaneous fuel consumption data. I drove it around like that for a couple months. 35-38 was pretty normal. Dropped an Ultraguage in it. I am up over 41mpg. That is an extra 7-17% increase (closer to 17 as 35 was far more common tan 38mpg) so pessimistically...

In about a week I go 400 miles at 38 mpg (which is optimistic) and $4.00 per gallon that equals $42.10

400 miles at 41 mpg(its closer to 42 now) and 4.00 per gallon is 39.02.

Ultra Gauge saves me $3.07 per week which means it pays off in 5.7 months.

If you do more than 400 miles a week, or your mileage is not as good as mine your pay off could be quicker.

Also, it was very valuable in trouble shooting some sensor issues I was having. as I could see the raw data from the sensor that was acting up. so it saved me a couple hours of troubleshooting or paying a shop to do it. so in that regard it has already paid for it self.

Another benefit is it tells you where going slower won't help and where going faster won't hurt.

Daox 10-11-2012 11:31 PM

Instrumentation is TOTALLY worth it. Even the scangauge II with its price premium is completely worth the price. You simply can not maximize technique without the feedback that instrumentation provides.

Mustang Dave 10-12-2012 12:50 AM

Best I've been able to get over EPA (combined) with driving technique and no mods (that made any noticeable difference) is about 55-60%. Honestly, none of my subtle mods have made any noticeable difference in FE. YMMV.
As Daox said, Instrumentation (ScanGauge or UltraGauge) will help you fine-tune your technique more than anything else.
I bought a ScanGauge II about a year before I found ecomodder.com, so I was getting about 50% over EPA(combined) (on Summer fuel) when I got here.

And I noticed today that I get about 10 MPG idling in 1st gear toward a red light versus 0 MPG stopped at the same red light at idle. Works for me! :thumbup:

Flakbadger 10-13-2012 03:25 PM

Alright you've convinced me. I had not thought about it in those terms. Looks like an Ultragauge is now on its way to my house!

Mustang Dave 10-13-2012 11:56 PM

You won't regret it.

YeahPete 10-30-2012 01:06 PM

I got the scanguage. While It did not increase my mpg numbers, I did end up using the code check 3 times so far, so its worth it.


All times are GMT -4. The time now is 02:41 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com