Quote:
Originally Posted by some_other_dave
I can tell you that the difference is very noticeable on my wife's car, a 1982 911. We have a power-adjustable "sport seat" that we put in for track days, and the non-power "standard" seat that we put in for daily driving. I can certainly feel the difference when picking the seats up. Probably something around 10 lbs difference, possibly more.
Some of that is due to the sport seat being a bit larger (more bolstering) than the non-sport seat, but some is definitely due to the electric motor and actuators. Those are much heavier than the manual adjusters.
Of course, that is 1980s tech. Electric motors have gotten smaller, lighter, and more efficient since then. I'm not sure what the difference would be these days.
-soD
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I'm not doubting or disagreeing with anything you said. With a maximum difference of 10 pounds, do you think that by reducing that 10 pounds it would provide any measurable gain in fuel economy in any vehicle?
There are some here that suggest that it would, or that it should be done out of devotion or compulsion for the hypermiling belief, and therefore it would always be beneficial, or at least virtuous. That is what I am questioning.