So I went on a long day trip but before departing I filled the gas to the maximum which was not on purpose. This is because I only had cash and I had to approximate. First I put $25 to try to achieve a full tank since it was only partially empty. I then added $8 worth but barely was able to get the last drop.
Anyways, I reset the trip computer as usual. First and foremost, I understand the OEM trip computer may not be accurate but I still approximate the type of mileage I get.
While driving, I like observing the AVG mpg display and making it a game on how high I can get it to go (trying to beat the boredom). It usually starts at 26-27 mpg in the past when I reset on the highway. But this time I believe it started around 28-29 mpg.
So a few days ago I finally broke 32 mpg on my trip computer which was always my goal. Yippiee!
Not only that, it kept creeping up little by little that I finally was able to get the display to show 34.1 mpg! WOW!
On my trip A odometer (after stopover) I had traveled 203.5 miles and I had 364 mte. Hence if I continued driving the way I had I would get around
567 miles on this one tank for a non-stop all day driving trip until I ran out of gas presumably. I know this ain't hybrid numbers but that is pretty darn good for a 16 gallon tank ( I can get that much if I tried).
I believe I had all the right conditions since I saw some flags blowing which meant the cross winds was flowing in the same direction as my vehicle and the elevation of the road. It varied by +15 to -3 degrees on my elevation display on my Garmin. Moreover, the speed limit signs varied from 45-55. I usually set at 55 and 58mph. I know not a favorite for the speed demons in here.
My opinion is that the cruise control is absolutely the best way to get highest mileage. At least for me.
After the stopover, the speed limit signs were showing 65 mph during parts of the trip. So I had to vary my driving from 70-80 mph. Even driving a hard 80, my trip computer was still showing high 28 to low 29.1 mpg. That was nice.
I also tried resetting the computer while continuing the trip during the highway phase. It started at around 40 mpg on the average display and slowly crept to 33.1. Since I was no longer really trying to do my personal driving challenge, the mpg was showing 28-29 mpg which was much better than the usual 26-27 mpg.
My 2009 AWD Rogue has nearly 44,000 miles. I use synthetic and change my oil every 10,000-15,000 miles with a Bosch D+ oil filter. I am planning to change this oil around 15,000 miles or a tad more with perhaps a mid-way oil filter change. I also used my eco-route hd on my garmin. I like looking at my real time mpg and the green leaf during the trip.
As you might know, my Rogue is the least aerodynamic vehicle in here. The Rogue-pocalypse all terrain vehicle I have.
I know I get good mileage because of the miles I see on my trip A computer and I know I can get close to the MTE miles that are left from approximating on my odometers.
I used shell gas which was 10% ethanol (winter formulation?). The temperature varied from 58-60 degrees. I also drove with a light foot and not gunning it at stop lights if I came across any. The driving was mainly 95% highway with long stretches of semi-rural roads where I would time the occasional lights to prevent my Rogue from having to stop.
Remember this type of mileage would only be achieved during a long trip where you would drive until you would run out of gas and not during a 2 week period of driving.
During normal driving I get usually 325-350 mpg from approximating with my trip computer.
So with careful driving in which you are really trying to get the absolute best mileage, you can probably achieve around 560 miles on one tank. I probably could have improved on it if I was able to drive all day until I emptied the tank but the driving conditions had to stay the same which was not possible at the time.
Just my experience.
UPDATE- I forgot to mention that on my next fill-up, the trip computer read 460 mte on a full tank.
UPDATE 2- The next tank is giving me around 400 miles. I don't know if it's from the long trip that it has adapted to being more efficient. Pleasant outcome, but once it unlearns everything while staying in the city, the second tank will have great mileage for the time being. Then I will be back to the usual 350 miles to the tank. Presently, my trip computer is showing 26.3 in the city. Good mileage none the less!