2007-03-21 17:13:34 · 5 answers · asked by Jason 3 in Cars & Transportation ➔ Commuting
it is only a one mile stretch
2007-03-21 17:30:53 · update #1
maintaining 40 miles per hour takes twice as much gas,its hard to hold any vehicle at 40,good luck.
2007-03-21 17:21:45 · answer #1 · answered by dodge man 7 · 0⤊ 1⤋
65 uses more gas, two ways. First the fuel used to accelerate, and second the fuel need to overcome aerodynamic drag, which is MUCH higher at 65 vs 40. How much higher? Stick your hand out the window and see.
A car moving steady at 40 mph is just about perfect conditions for getting excellent fuel economy. Much below that and you're not in a good engine range; much above that and aerodynamic drag becomes a serious problem.
If a GMC Suburban got 30 MPG in those conditions, it wouldn't surprise me. If you're nearly out of gas and limping toward a gas station, cruising at 40 MPH is ideal. In WWII, they made the national maximum speed limit 35 mph (mind you there were no freeways back then) specifically to conserve fuel.
2007-03-21 19:49:02 · answer #2 · answered by Wolf Harper 6 · 0⤊ 0⤋
The first one.
2007-03-21 17:16:53 · answer #3 · answered by Anonymous · 0⤊ 0⤋
accelerating of course!! maintaining a set speed is very economical,, but trying to get the vehicle to brake friction
and gravity to reach a set speed takes plenty energy!! that is why "cruise control" on cars work so well and save gas,,,,,
2007-03-21 17:25:09 · answer #4 · answered by fuzzykjun 7 · 0⤊ 0⤋
the more you accelerate the more gasoline you use
2007-03-21 17:21:11 · answer #5 · answered by littletimmy007 3 · 0⤊ 0⤋