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Old 08-20-2010, 06:06 AM   #22 (permalink)
redpoint5
Human Environmentalist
 
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Join Date: Aug 2010
Location: Oregon
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Acura TSX - '06 Acura TSX
90 day: 24.19 mpg (US)

Lafawnda - CBR600 - '01 Honda CBR600 F4i
90 day: 47.32 mpg (US)

Big Yeller - Dodge/Cummins - '98 Dodge Ram 2500 base
90 day: 21.82 mpg (US)

Chevy ZR-2 - '03 Chevrolet S10 ZR2
90 day: 17.14 mpg (US)

Model Y - '24 Tesla Y LR AWD

Pacifica Hybrid - '21 Chrysler Pacifica Hybrid
90 day: 85.85 mpg (US)
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Quote:
Originally Posted by RobertSmalls View Post
The corner lights and dash lights draw about 90W, and headlights draw 110W according to my own measurements. For a 50% efficient alternator, that's an additional 400W (0.5HP) at the crank...
Thank you for this practical analysis.

My car has HID bulbs, which consume 35W/bulb compared to the typical 55W/bulb incandescent. That means I'm drawing 40% less electrical power. Not only does it draw less energy, it puts out 3x the light. People who appreciate FE would also appreciate electrical efficiency.
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