I just had a painful 5 1/2 hour drive and achieved 41 MPG average and have 70% gas remaining. To achieve this, grandma mode had to be activated, which was Cruise control set at 60 MPH and ECO mode turned on. And boy, I got two numbers, since I turned off the van two times. The first number was 40.4 MPG, and the second one was 41.6 MPG. And this was over a 254 mile drive.
I saw my tire pressures were 33 and 32, which the two tires that had 32 was under inflated by 1 psi. I also had the live MPG screen on display so I can see the live data.
So I am not sure how EPA achieved 33 as HWY, since I had a painful drive today, since it took me more than 1 hour extra than it usually takes on this route (I use the turnpike for roughly 240 miles). I am going to do my tests for a year and evaluate my results, to see whether or not its worth to bring a lawsuit upon Nissan & EPA for false advertising.
However, just doing some research on average highway speeds in the country, most speed limits are between 65 to 70 MPH, not 50-55 MPH, so EPA needs to redo their speeds.
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