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It makes perfect sense and, not to be rude, but I have to laugh at how far over everyone's head this topic is.
they are going the same speed over different distances, meaning the further you go at a more efficient speed, the higher your average mpg will be. Afterall, mpg is nothing more than an average, and if you get higher efficiency over a longer period of time, the average will raise.
Seems a lot of people on this board missed out on math.
You will get noticably better mileage on the second trip, because you have a greater amount of distance to make up for the disporportionate amount of fuel used to accelerate to 90 mph.
Originally posted by TheHunted
reply to post by cautiouslypessimistic
You have to provide some proof of this peak rate you speak of. I've provided facts with clear evidence that driving slower regardless of aerodynamics increases fuel economy.
Originally posted by Evil Genius
So, where then is this noticeably better mileage if there is no disproportiante amount of fuel used?
Ten seconds of hard acceleration in any car would lower the mpg for that time period subtantially. If you track your mpg, you WILL notice at least a +1 or 2 in mpg over the longer distance, which is noticable difference.
Top speed also plays a part. Most vehicles are most efficient when cruising in their top gear at a relatively low speed. For example, a car with a five-speed transmission would be most efficient in 5th gear at 40 to 55 mph. Wind resistance increases exponentially with speed, so as your pace increases from this point, fuel economy drops dramatically. Onboard trip computers that show instantaneous and average fuel economy are remarkably accurate. Keep an eye on this and you'll learn how to drive in a miserly fashion.
Originally posted by Scorched Earth
Just like I told the cop that pulled me over a few weeks ago, unless the city is willing to compensate me for the gas I spend sitting at uncoordinated traffic lights, I will drive over the speed limit to make up lost time.]
Originally posted by SailorinAZ
I stay in the right lanes. California has signs all along the freeways that say slower traffic to the right. However, Arizona does not and it is chaos.
Originally posted by TheHunted
So on my way to work today a F-250 flies by me on the express way. I was doing 70 which is the speed limit, the truck must have been going 85. Anyways, I get off at my exit where there is a stop lights at the end of the ramp. Sitting there is the truck waiting for me is the same truck. Just another example of easy money being made by oil companies....
Originally posted by tjack
reply to post by TheHunted
This phenomenon happens to me all the time. I've noticed it from both sides of the coin, a few times I was the "speeder" and got around "that slow dude" only to have him tool up beside or behind me at some stoplight 3 towns up the road.
I drive way more mellow now with the high gas prices and have noticed my mileage go from 27-28, to 32-33.
At current prices this saves me around 200 bucks a year. Worth it? Maybe