Using DFCO to increase your MPG

[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!