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serialk11r · 03-13-2020, 08:06 PM

You can roughly estimate this. For example with my FR-S, I was getting about 18-20mpg? while looking for parking in San Francisco. I recall estimating that rolling at 25mph with pulse and glide was getting me around 90mpg, and almost all of that consumption would be rolling resistance.

Engine on P&G that number drops to the 40s I think. But the average speed is really much closer to 10mph, so it's like 30mpg.

So I think it's fair to say acceleration is taking close to 40% of the energy in that stop and go scenario.

For long freeway drives, probably 80% air resistance?

03-13-2020, 08:06 PM	#3 (permalink)
serialk11r Master EcoModder Join Date: Jan 2012 Location: United States Posts: 1,756 spyder2 - '00 Toyota MR2 Spyder Thanks: 104 Thanked 407 Times in 312 Posts	You can roughly estimate this. For example with my FR-S, I was getting about 18-20mpg? while looking for parking in San Francisco. I recall estimating that rolling at 25mph with pulse and glide was getting me around 90mpg, and almost all of that consumption would be rolling resistance. Engine on P&G that number drops to the 40s I think. But the average speed is really much closer to 10mph, so it's like 30mpg. So I think it's fair to say acceleration is taking close to 40% of the energy in that stop and go scenario. For long freeway drives, probably 80% air resistance? Last edited by serialk11r; 03-13-2020 at 08:12 PM..