View Single Post
Old 04-29-2012, 10:44 PM   #10 (permalink)
NeilBlanchard
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,880

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
TEAM VW AUDI Group
90 day: 155.81 mpg (US)
Thanks: 3,395
Thanked 2,896 Times in 1,817 Posts
The rule of thumb that I've heard is if the engine can be off for 15 seconds or more then it is likely better to turn it off. The one time that I coast a long time but leave the engine on is if the engine is still cold -- you need to bring it up to about 165F in my car to get it off of the richer mixture, so idling while coasting to warm it up seems worth it.

And bump starting is probably better than using the starter, so if you have a standard, you can turn it off, wait a second and then turn it on again so that you can bump start it as quickly as possible, as needed.
__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote