That fuel is probably going to be bad by then thanks to the ethanol that's put in it. Diesel is much more stable in that case.

I wonder if anyone has done any modern testing.

I had a 1990s car that started right up with 2015 fuel that sat in its tank for 9 months.

I had a car parked during covid and then remote work that probably consumed 1 tank of gas over the period of 2 years. Other than battery drain it was fine.