2004 yaris hatch, 2nz-fe, DFCO in all gears?

[2009Toyotoad]

Very, very well said Yaris Hilton. Perhaps this will clear up some of the DFCO confusion. Hypermilers, please take DFCO out of the discussions as its not really any benefit in the pursuit of better MPG, unless your end goal is green rather than saving money.

[BailOut]

Originally Posted by 2009Toyotoad

Hypermilers, please take DFCO out of the discussions as its not really any benefit in the pursuit of better MPG, unless your end goal is green rather than saving money.

DFCO does indeed benefit MPG, and more so the less flat your region is. Using no fuel is absolutely more efficient in more ways than one than using fuel to idle.

If you live in a flat area there will be less opportunity to use it, and less time in DFCO per use, but it is always a viable fuel efficiency technique. If you live in a hilly or mountainous area it makes a huge impact on FE. This is also by far one of the easiest hypermiling techniques to use.

Hypermiling is not about saving money though that is certainly a nice and tangible side benefit. It is about reducing our use of and dependence on oil (especially foreign oil) and reducing our emissions, thereby lowering our overall impact on the planet and its environment.

[Yaris Hilton]

Right. I'm not saying it doesn't save gas, only that the way most people drive, the DFCO feature usually won't make a big mileage difference.