Got another fill-up in. I'm pretty close to my first tank, averaging 42.6mpg on the dash and 41.6mpg by math. Looks like I might not be seeing the 43-44 I was expecting. One thing that caught me off guard... when I had roughly a quarter tank left, I was estimating that I was going to see about 560mi to the tank. Then on my way home today I got the gas light which completely threw me off guard. I was sure I was going to get through the weekend (not much highway, just some puttering around town), but I didn't.
Then I realized on two mornings this week I let the car run in the morning to warm up. Today specifically, I got distracted and the car ran until what I presume is auto-off (10min?). Anyways, the morning starts aren't free so I think I lost some there. If I extrapolate the 12gal for the fill up to 13gal for the tank, it does bring me to 543mi to a tank... which is pretty close to my early estimate. The 20 or so miles I lost were likely due to the remote starts. Good thing is this week I spent more time driving "normally" as opposed to trying to squeeze out every last mpg. Not much of a difference between fill-ups. Still a pretty good average imo, though I always want moarr.
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I guess one nice thing is in my previous car, I had a 17gal tank, filled with 93 octane @ ~$3.79/gal for roughly $60 fill-ups @ 31mpg (approx. 496mi between fill-ups). With the Avalon, I have the same frequency between fill-ups @ ~500mi, but with $40 fill-ups @ 42mpg.
On my treks to work I average about 37ish on the dash, and on my treks home I average 57ish, and in many cases I have 60mpg pegged on the display. Considering this I was really hoping to see mid to high 40s for my route, but not the case. These trips back and forth make up about 75% of the gas in the tank too. Oh well. For an Avalon, it'll do.