Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Does coasting in neutral or coasting in gear save more gas?

PaleMelanesian · 07-15-2008, 11:12 AM

I don't consider in gear to be coasting at all. That's engine braking.

Coasting is in neutral, either EOC or engine on. EOC gives you infinite mpg, engine-on gives you high (100-300) mpg.

If you have to stop due to a red light, stop sign, or traffic backup, use engine braking where it cuts off the fuel flow. Any other time, go to neutral. The longer coasting distance easily overcomes the slight bit of idle-level fuel consumption.

The fuel consumption while the engine is off is related to a specific revision of scangauge. 3.15, I believe. Mine is an earlier one that reads an accurate 9999mpg in the same case, but it doesn't know about DFCO.

07-15-2008, 11:12 AM	#9 (permalink)
PaleMelanesian Hypermiler Join Date: Dec 2007 Location: Texas Posts: 2,321 PaleCivic (retired) - '96 Honda Civic DX Sedan 90 day: 69.2 mpg (US) PaleFit - '09 Honda Fit Sport Team Honda Wagons 90 day: 44.06 mpg (US) Thanks: 611 Thanked 434 Times in 284 Posts	I don't consider in gear to be coasting at all. That's engine braking. Coasting is in neutral, either EOC or engine on. EOC gives you infinite mpg, engine-on gives you high (100-300) mpg. If you have to stop due to a red light, stop sign, or traffic backup, use engine braking where it cuts off the fuel flow. Any other time, go to neutral. The longer coasting distance easily overcomes the slight bit of idle-level fuel consumption. The fuel consumption while the engine is off is related to a specific revision of scangauge. 3.15, I believe. Mine is an earlier one that reads an accurate 9999mpg in the same case, but it doesn't know about DFCO. __________________ 11-mile commute: 100 mpg - - - Tank: 90.2 mpg / 1191 miles Last edited by PaleMelanesian; 07-15-2008 at 11:58 AM..