When I first started driving I drove slow bc I thought it would save gas, then I started driving faster when a friend told me you use the same amount of gas whether you drive slow or fast (as long as it’s the same distance), you just would be driving fast for a shorter amt of time and driving slow for a longer amt of time, but at the end you burner thru the same amount of gas. Is this true?
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Most of the replies are spot on, but I’ll add that another fuel inefficiency is constant changing of speeds. Use of cruise control or maintaining constant RPM is the key to fuel efficiency. If you’re constantly speeding up/slowing down you can end up burning more fuel than if you just maintained a set speed.
If you push hard enough on the accelerator most automatic transmission cars will downshift and increate RPM so you speed up faster. There’s a threshold where you can still gain speed without causing the downshift. Learn it and you can improve gas mileage significantly.
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