Quote:
Originally Posted by junosama
Your driving habits can affect gas consumption a lot. If you accelerate fast and keep going from low to high speeds you will burn more gas I believe. try and drive a steady speed as much as possible. I think there are some optimal speeds for gas mileage, but I dont know them off hand.
I guess thats why highway driving burns less gas then like city driving right?
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For both the optimal speed reason you mention and also that so much fuel is spent on stopping, idling, and then accelerating again. I've heard that the optimum speed is generally 55-60, and I can attest to that myself. My car gets by far the best mileage on two-lane highways (55-60 mph) vs Interstates (70 mph). At both 55 and 70, your vehicle is going to be in the highest gear, but at 70 the tach will be much higher (greater wind resistance is a factor too).
It's why the Carter administration reduced speed limits to 55 during the energy crises of the 70s.