I currently drive 42.3 miles (per google maps) on the way home everyday (I feel comfortable driving 62.5-65mph) on the interstate. I do have a 45-55mph road that trails the interstate somewhat closely, and according to Google Maps, it'll be about 3 miles longer of a drive. I'm curious, and granted, I know all cars produce different results, and testing it myself would be best, but would driving @ 45-55mph on the secondary roads for a slightly further distance make much difference?
I suppose mathmatically, I'm getting ~35 mpg, so, I would think I could potentially save just about what the difference in length would be, any flaws in my thinking?
It would take some number-crunching to figure out if the extra distance is really worth the extra MPG. If you're going all out, don't forget to factor in the added wear-and-tear of components.
As to whether the different route makes a difference in MPG?? YMMV, but instinct tells me absolutely. For instance....I started taking a different route home from work. It adds roughly 10 miles, and 10-15 minutes to my drive. However, there are less stoplights, and it's a little flatter. Plus, no interstate = lower average speed. You can see from my gaslog that my mileage has gone up roughly 2 MPG (~10%?) just from taking this route.
I currently drive 42.3 miles (per google maps) ....about 3 miles longer of a drive. ...@ 45-55mph on the secondary roads ...
Well you are driving 42 miles which is a significant distance. An extra 3 miles adds about 3/42 or about 1/14 to your commute. This is just aover 7% added to your commute. If your MPG goes up OVER that amount then it would be worth it. A 10% increase in mpg would make it worthwhile from a financial standpoint.
You also have to ask yourself what your time is worth as well. If you come out ahead, is that dollar value worth the extra 3-5 minutes added to your commute? Of course if yoy are just trying to make your numbers sweet and fatten your hypermileage status then its worth every last second. I know there are at least a few people who took a longer route because they would get better FE numbers even though they actually spent more gas money on the longer route. Your new route is a no-brainer when in an FE competition. If you gave us your highway mpg and your local road mpg and both your distances (Well I guess that 42mph vs 45mph) then we can do the math.
I'm surprised a 42 mile route doesn't have a shorter distance available. When I'm trip planning, I can find almost any long route by highway I can find a shorter route by state/county roads. I used to drive 258 miles by highway, which I now drive 207 miles by state routes, saving me miles that I can also get better mileage at, so the only thing I sacrifice is time
I don't have "highway" mileage anymore. Whether the speed limit is 55 or 65mph I just drive 50-55 and consistantly get 45% over EPA combined that way. For me, the shorter route is just about always better that way.
How long is your commute? I would think adding 10 miles would mean to make it worth it you must drive quite a ways?
Sometimes the non-interstate route can have more hills and more opportunities for P&G or EOC. This means that savings can be larger than you would initially expect from just the change in average speeds. I'd say try it for a week and see what you think... You may also find it less stressful or more pleasant to drive.
Whenever I drive up to moms I can either take the interstate or a little road that runs right beside the interstate the entire time. If I take the interstate I have to drive atleast 60-65 so I don't get run over and since I live in the mountains, I may be climbing in 4rth at 4-5k rpms(guess, no tach). This sucks on gas mileage. If I take the little road, there is no real traffic and I can go my own pace. I can take the hills slower and do a crap load of gliding and esp. EOC. Yes, it takes me a good bit longer but its ok, I like to see my average mpg climb and its not like I have anything to do once I get there.
So, experiment. Do one for a few days and then the other. Perhaps being off the interstate will be less stressful.
Please experiment and find what works best for you. I like the side route as I usually get to my destination in about the same time and the stops provide engine off gliding opportunities that allow for exceptional mpg. I would be getting 40% worse mileage if I followed the crowd and have a lot more stress and not save hardly any time.
Your mileage may vary, gotta experiment to know for yourself.
I take the longer way around on my daily drive to miss two stop lights in Glenpool and Jenks. It only saves me fuel if there is a lot of traffic and the idiots are stacking up like cord wood. Just to get out of the beep and creep and lesson my odds from getting rear ended by a cell phone chating jerk is more than worth it.
09 HCHII, w/Navi
07 Mazda3 S Touring, 5MT
Mild Hypermiler or Mad Man?