Using DFCO to increase your MPG - Toyota Yaris Forums

Beer Jammer · 08-03-2010, 11:17 AM

Hi All.

I've been insterestedin DFCO for a while now since Top Gear did a feature on it.
I have adjusted my driving style to encourage the DFCO, but my motives were not to see my MPG improve dramatically and save cash. My view is, if I have a leaky tap, (or fawcet to you guys over the pond :-)), that drips every 20 seconds, it wont add much to my water bill, but why waste the water?

Anyway, I have often wondered if the DFCO can be better used. I have an armchair thoery on utilising it, see what you think. Here is the theory:

Drive at 60mph, let the car engine break down to 50mph in DFCO, gently accellerate back to 60mph. Repeat the cycle.

Now, assuming that the decelleration and accelleration times were equal and on a flat road, would you see an overal improvement in economy, a reduction or no change?

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

08-03-2010, 11:17 AM	#13
Beer Jammer Drives: Yaris 1.3 SR Join Date: May 2010 Location: Somerset Posts: 29	Hi All. I've been insterestedin DFCO for a while now since Top Gear did a feature on it. I have adjusted my driving style to encourage the DFCO, but my motives were not to see my MPG improve dramatically and save cash. My view is, if I have a leaky tap, (or fawcet to you guys over the pond :-)), that drips every 20 seconds, it wont add much to my water bill, but why waste the water? Anyway, I have often wondered if the DFCO can be better used. I have an armchair thoery on utilising it, see what you think. Here is the theory: Drive at 60mph, let the car engine break down to 50mph in DFCO, gently accellerate back to 60mph. Repeat the cycle. Now, assuming that the decelleration and accelleration times were equal and on a flat road, would you see an overal improvement in economy, a reduction or no change?