This is bullshit, the machine sucks as much as it can but it doesn't flush a differential. (Unless they drastically changed the machine design) All they do is use a thin tube to get as deep as possible to suck as much fluid out as it can. Shavings/debris will plug the tube not get sucked...
It doesn't photograph easily but it looks great in full sun. I had to visit a dealership to see it in person before ordering. Though I'll say I like Toyota's lunar rock a little better.
Mine had 39 but the paperwork says it had 8. I didn't make a fuss about 31 mile discrepancy but in your case I'd make sure the dealer notes the actual miles at delivery as that effects your warranty coverage. Warranty starts from the miles at sale, not 0.
Car computer tells me 16-18 on the highway (head and cross winds kill MPG). Calculating MPG at every tank I have yet to break 17, averaging about 16.5mpg on mostly freeway driving cruise set at 75mph.
The science is there is less energy in ethanol than gasoline so diluting the gas means you need to burn more to release the same energy.
The trade off is the carbon is "neutral" because the next crop of corn absorbs the carbon to grow, that's the theory at least.
I've found the displays to be very optimistic. Might be worth using an app like "Fillup" where it uses miles and gallons added to calculate your actual mpg plus allows you to add notes to each trip for tracking.
I realize that doesn't explain the sudden dip but it might help diagnose it over...
Just out of curiosity are you trusting the displayed MPG or calculating your mileage when you fill up?
My daily commute is about 50 miles of Freeway/highway and I've been averaging 15-16 calculated while the display is telling me 17+
I use trip 1 to track my miles per tank and so far the highest calculated MPG I've seen is 16.8 and the lowest is 15.1. On the 15.1 tank the nifty average MPG display on the dash said 17.4 which is a 15% error...
As a mechanical engineer I'd say "Too many variables to tell", but I can see in this shot that the jeep wheel appears to tuck under the body possibly triggering the weight transfer that results in the eventual roll. 🤷♂️
Depending on what day that was, and what color yours is, I might have. Before I took delivery on mine I saw at least one heading west on I-80 as I was headed home from work. It was Cyber Orange (yellow). I might have seen 1 or 2 others on I-80 but that one stood out. I just haven't seen...
As much as I like the 4Runner, and am interested in what they do with it for the refresh, if Toyota is already playing these games I'm less likely to consider buying one.
https://www.thedrive.com/news/43329/toyota-made-its-key-fob-remote-start-into-a-subscription-service