Accellerate/Coast method more fuel efficient than cruise control?
June 14, 2007 9:39 AM Subscribe
Question about cruise control vs. a special acceleration/coasting technique in terms of fuel efficiency.
posted by Quarter Pincher to Travel & Transportation (11 answers total) 1 user marked this as a favorite
If you've got say, a speed limit of 45, and while driving on flat clean road, no wind aside from your own forward movement, etc, you accellerate to 47, coast until you're down to 40, then accellerate to 47, coast back down -- could this period of brief gassing up and long coasting by momentum, use less gas than having the pedal down the entire time and keeping at 45 (which I would assume cruise control would do)?
Would there be an ideal range (instead of up to 47 and down to 40, and back up/down) that would achieve greater efficiency? Would it be better to quickly accellerate to 47, or slowly (as the transmission gear may affect gas consumption)?