MarineHawk
Well-Known Member
I'm fairly certain that the computer bases it off of recent activity. For example, I can be driving locally in rush hour and stop-and-go (getting dismal gas mileage), and then fill up and head out on the highway. After I spend the first 50 miles or so, getting 20 MPG, instead of the previous 12 MPG, the Range actually is higher than when I started, even though I've burned through 2.5 gallons of gas. When, I'm driving down this one 7-mile stretch in WV with a 7% grade, getting "99 MPG," the Range ALWAYS goes UP from when I started the descent to when I ended it. I'm pretty certain that the range is based on recent activity, and not the lifetime mileage of the vehicle. Otherwise, it would NEVER go up. But mine goes up when I switch from low-MPG conditions to high-MPG conditions. I think it's based on a certain amount of prior miles. If I had to bet, I would say it's about 50 miles based on my observations.I base the estimate on the total life MPG of the vehicle. I have never reset Trip B, which means it shows the lifetime fuel economy and odometer of the vehicle. I understand what you are saying about how your mpgs can vary and thus your fuel economy estimate can change. My point is that I have had several instances where my mpgs didn't change and my remaining miles didn't change once the low fuel light came on; at least the estimate didn't change for several miles (i.e. saying I had 45mi left for about 20mi, then dropping down by like 5mi, 20mi, etc).
Regarding the LOW status, that is another bone I have to pick. If 10mi are left, then at BEST it can have about 1/2 gal left in the tank. I have run it a few miles AFTER it reached the LOW indication and still only refilled 19-20gal, which means as always, I am 2gal away from filling tank capacity, which should not happen.
That would be consistent with what I'm saying, if, for example, you started hitting some downhill/uphill terrain.I base the estimate on the total life MPG of the vehicle. ... My point is that I have had several instances where my mpgs didn't change and my remaining miles didn't change once the low fuel light came on; at least the estimate didn't change for several miles (i.e. saying I had 45mi left for about 20mi, then dropping down by like 5mi, 20mi, etc).
I always reset Trip A when I fill up my tank. when I say the range is "going up," sometime that literally happens, but I also mean that to be when the miles spent on Trip A + the Range # goes up. If when I fill up the tank, it says the Range is 350 miles. If I have gone (according to Trip A) 100 miles and the Range says I have 300 miles left, that means the Range has gone up by 50 miles for that tank.
Sponsored
Last edited: