It is not my judgement or opinion it is a known fact.
Are there some people interested in the fundamentals of automobiles, yes that is a fact.
It is also a fact that even on this forum dedicated to learning the fundamentals of automobiles (specifically the CX-5) more than some people have asked questions that are readily addressed in their owner's manual, including fuel.
Meaning they haven't chosen to actually read it or didn't comprehend it.

The majority of people couldn't even explain how an internal combustion engine works.
And virtually every time I go to a gas station someone pulls in with the gas/fill cap on the wrong side of the pump.

Schoedinger's cat/ Quantum Mechanics is really not applicable here.
You would be better served with BF Skinner behaviorisms or Pavlov's Dogs.

 

You are doing really well if you are getting 500 miles out a 15.3 gallon tank. 32-33MPG. I rarely get more than ~350 miles/tank with my 2.5T (highways or mixed driving)

 

For real. I don't remember the last time I saw someone gettig 500 miles on a full tank lmao.

 

Nothing personal here - but one does not need to know how the ICE engine works to understand how fuel affects thier driving experience- reliability , performance , mileage - Once you show someone how the different fuels will act ---ie premium fuel will give you better gas mileage etc - they are better equpped to make a good decision on fuel grade best for themselves ...knowing these facts

 

Unless you have tried 93 octane and experienced no improvement in driving performance, MPG, etc. As is my experience with driving a CX5 since 2019.

 

Well since were splitting cat hairs- I said Freeway - only - I have never driven my 2025 CX5 NA from full to bone dry in one non-stop trip - thus in reality have not driven 500 miles on one tank - Yet ....I have taken many very long road trips thru New Mexico , Arizona etc where you wont see a gas station for 100 miles - and have averaged 33-35 mpg on these trips over 70 mph in which i attribute this mileage to cylinder deactivation - and upon a fill up the range estimator states 500-517 miles avaliable based on the previous driving conditions - Thus - I have exceeded 32.6 mpg with my 15.3 gallon tank using PREMIUM 91-93 on the freeway and in segments did drive over 500 miles using the equivilant of 15.3 gallons . Correct tire pressure - i use 37 (+2) cold fill - premium fuel and 0w-20 gf5 w moly oe Mazda -Idemetsu oil .Its absolutley do-able -And has been done - - photo is facing south - mounments valley -

A great road trip for anyone that likes open road driving - catch the grand canyon while yer at it- / north rim closed from fire this year - south rim still open - BTW This location is precisely where in the movie Forrest Gump - He stopped and turned around ----you cant miss it as there are usually many people there often stopping traffic and signs stating that this i the Forrest Gump location - they run in the road and try to stop traffic -- be careful - the point is thats exactly where I took this photo

 

Mazda's published mileage from a single tank of fuel.
N/A: 459 miles
Turbo: 397 - (474 if all highway)

I'm currently consistently averaging 32-35 mpg with my 2020 NA.
I've seen no major difference in milage between the 87-89-91/93 octanes available in my state.
Higher octane may well be better for my engine internals but not on my wallet at a minimum of $1.00 more per gallon.
I use Techron and also trade my vehicles before internal carbon build-up ever becomes a noticeable issue for me.

 

lately due to construction i have been driving about 115 mi/commute day (commute is ~98% highway)...after commuting 2 days i'm at about a 1/4 tank so i need to fill up due to the small tank size on this vehicle...i also don't like to run a tank all the way empty anyway...car computer says i'm getting 29 mpg (75-80 mph typical)...filled up with top tier premium yesterday to see if it makes any difference in gas mileage...if not i'll be going right back to 87 as it's about $1 difference here as well

 

Those numbers are suspect. 474 miles on a tank with the 2.5T vs 459 with the N/A 2.5? Not likely.

 

My old Primera ( Infiniti G20) had better fuel economy on the open road after I turbo'd it.