View Single Post
Old 10-16-2008, 08:35 PM   #1 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,513

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 52.71 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 60.16 mpg (US)
Thanks: 4,058
Thanked 6,957 Times in 3,602 Posts
Tesla Roadster a power hog?

Tesla founder & former exec Martin Eberhard has posted on his blog about how shocked he was to discover how much power his car wasted sitting idle (battery coolant pump running constantly):



Quote:
Whoa! The car consumed a whopping 14 kilowatt-hours in four days, just sitting there! Doing the math, the pump draws about 146 watts all day long, all night long, every day. This works out to 1,278 kWh per year. To put this in perspective, a really nice 26-cubic foot side-by-side refrigerator with an ice maker uses only 618 kWh per year, so this pump is the energy-equivalent of two huge refrigerators!
The car basically wastes about 20% of its battery capacity (and lifecycle) circulating coolant. Note this is for HIS particular driving patterns & style; YMMV.

He's also been tracking his total efficiency, at the wall: 439 watt hours/mile

That's right: turn on four (point 39) 100 watt light bulbs for an hour, or drive 1 mile. Your choice.

This includes the "idle wastefulness" that he discovered, and is frankly not very good.

__________________
Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata
Honda mods: Ecomodding my $800 Honda Fit 5-speed beater
Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage.
Ecodriving test: Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote