View Single Post
Old 02-28-2011, 08:44 PM   #3 (permalink)
NeilBlanchard
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,907

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: 3,475
Thanked 2,950 Times in 1,844 Posts
Here's a counterpoint:

Weight is important, but not as important as drivetrain efficiency, or as aerodynamic drag. The reason is, that as you note weight adds to the kinetic energy, so you can reclaim it by coasting, and/or by using regenerative braking if it is a EV. So, yes it takes more to accelerate, but you can get back some of the energy you put in; preferably by coasting.

Aerodynamic drag though, is a total loss. And rolling friction (like wheel alignment, bearing friction, dragging brakes, and tire rolling resistance, etc.) are also total loss; but they are also fairly easy to minimize.
__________________
Sincerely, Neil

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