Using DFCO to increase your MPG - Toyota Yaris Forums

imjustagirl8_05 · 08-01-2010, 12:59 AM

So I just found this site and it's really cool. I am learning a lot about my Yaris! I bought my car in Jan 2007, I had no idea there were earlier models! I'm not sure if my car is 4 speed, but I think it is, since it's AT. Does this mean I have the DFCO? I haven't tested it out the way you described yet, but I definitely will! I just wanted to ask, is the ignition only to be turned off to test whether I have it? If I do have it, I would just have to lower a gear (like to 3) to get into DFCO mode, and it would stop using gas while slowing my car? Sorry, I'm slow, I had to read this post three times and search some terms to get it, but please let me know if I've understood correctly. Thanks!

Maxh91 · 08-01-2010, 01:59 AM

Quote:

Originally Posted by imjustagirl8_05

So I just found this site and it's really cool. I am learning a lot about my Yaris! I bought my car in Jan 2007, I had no idea there were earlier models! I'm not sure if my car is 4 speed, but I think it is, since it's AT. Does this mean I have the DFCO? I haven't tested it out the way you described yet, but I definitely will! I just wanted to ask, is the ignition only to be turned off to test whether I have it? If I do have it, I would just have to lower a gear (like to 3) to get into DFCO mode, and it would stop using gas while slowing my car? Sorry, I'm slow, I had to read this post three times and search some terms to get it, but please let me know if I've understood correctly. Thanks!

-Yes you yaris have DFCO
-As your yaris is a 2007, you need to be in 3th or lower to activate the DFCO.
The 2008 and newer can do DFCO in every gear.
-You car need to be in gear (L,2,3) to activate the DFCO AND you need to be above 1100RPM

Yaris Hilton · 08-01-2010, 02:00 AM

Sometime in the mid-2007 model year they changed so the DFCO works in Drive. About the time yours was made, IIRC. The 2007 I originally bought for my wife has DFCO in Drive. No need to downshift. Don't switch off the key. While cruising along, let off the gas. .5-.7 second later, you'll feel a gentle deceleration as the fuel cuts off.

08-01-2010, 12:59 AM	#1
imjustagirl8_05 Drives: 2007 Toyota Yaris AT Join Date: Aug 2010 Location: Phoenix, AZ Posts: 5	Let me get this straight. So I just found this site and it's really cool. I am learning a lot about my Yaris! I bought my car in Jan 2007, I had no idea there were earlier models! I'm not sure if my car is 4 speed, but I think it is, since it's AT. Does this mean I have the DFCO? I haven't tested it out the way you described yet, but I definitely will! I just wanted to ask, is the ignition only to be turned off to test whether I have it? If I do have it, I would just have to lower a gear (like to 3) to get into DFCO mode, and it would stop using gas while slowing my car? Sorry, I'm slow, I had to read this post three times and search some terms to get it, but please let me know if I've understood correctly. Thanks!

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
low gas mileage?	yrsdrgn	General Yaris / Vitz Discussion	30	01-17-2019 04:26 AM
Synthetic oil MPG boost since change	Yaris Dick	General Yaris / Vitz Discussion	29	09-15-2007 09:15 PM
Increased MPG or HP anyone????	slvryaris	Performance Modifications	55	05-27-2007 11:49 AM
MPG trackers	acrbill	General Yaris / Vitz Discussion	11	01-01-2007 08:34 PM

08-01-2010, 02:00 AM	#3
Yaris Hilton Half a Bubble Off Plumb Drives: 2009 Yaris Sedan Join Date: Mar 2009 Location: Bristol, Tennessee, USA Posts: 1,593	Sometime in the mid-2007 model year they changed so the DFCO works in Drive. About the time yours was made, IIRC. The 2007 I originally bought for my wife has DFCO in Drive. No need to downshift. Don't switch off the key. While cruising along, let off the gas. .5-.7 second later, you'll feel a gentle deceleration as the fuel cuts off.