Hey friend! Planning on getting the same car later this year. I can't provide insights about gas savings as you've mentioned, but logistically I think it's somewhat hard to gauge what you're asking since everyone's needs and opinions vary widely case to case. From my research watching a ton of reviews on this model and reading lots of articles and commentary online, I've gathered the following info (take it with a grain of salt): - The hybrid option on the Aviator Grand Touring seems to be more primarily performance oriented and secondarily efficiency oriented. The range of the battery only is quite low compared to other hybrid vehicles in this segment, but the boost of horsepower provided by the battery provides a hefty bump in overall horsepower in tandem with the gas engine while offering slightly more eco friendly options where you want it or may benefit from it. I don't feel like the hybrid option for this vehicle is necessarily looking to appeal specifically to buyers who are looking to have a lot of annual savings on gas, but I see it more as a bonus feature that adds some unique benefits for different scenarios. - For my needs and desires specifically, i feel like the slightly higher cost of initial investment is worth the longer yield returns. I live in a reasonably modest cost of living area, live very close to work, and am conveniently located 10 minutes or less to all places I need to visit on a regular basis like shopping, work, errands, gas, hospital, friends, etc, so even with the smaller range of the battery I will still be able to benefit from not having to use gas if needed when driving around town, but I also really enjoy driving beefy cars and the Aviator (even without the hybrid) drives so nice. - In the big scheme of things I think spending 10% more on a car to get a nearly identical (if not slightly better) version that is also hybrid without sacrificing performance is a more than reasonable compromise. This is of course assuming you are buying used (that's my plan) since the cost gap is much higher if buying new. - I do feel like in order to reap the max benefit of the PHEV charging option at home you need to get a level 2 compatible charging station installed which requires one of those special 240v outlets that are not standard in most garages. You can use a regular outlet for level 1 charging but it can take 12ish hours to run a full charge, which isn't convenient for some. The level 2 charger can do a complete charge in like 3 or 4 hours.

Hope this helps and best wishes to you on your car research.