The grocery store where we buy most of our food etc. does a shoppers card that in addition to providing extra savings on groceries, also gives us 10 cents back per gallon of gas/deisel (up to a maximum of 25 gallons) for every $100 in groceries we buy per month, up to $1 maximum savings per gallon, and it's only usable on one purchase.
A lot of other grocery stores have the same or similar deal.
Now my wife an I typically spend less than $400 a month on groceries, so that would mean only $0.30 off per gallon of gas. The car we currently own only has an 8.9 gallon tank which further reduces the benefit.
On the other hand we only use 8-10 gallons a month on average.
So what's a frugal person to do?
Well first off we went out and bought some 5 gallon gas cans, so now we can get the 25 gallon maximum, and that's usually enough to last us 3 months.
The we time shift some of our purchases. Every three months we buy three months worth of nonperishable items and foods with a long shelf life: cheese, TP, paper towels, etc That adds an extra $100-$150 or so on that month which can push our total purchase that month to $500-$600 (an extra 20-30 cents savings on gas)
We also pay attention to when they have double points days and move as much shopping a practical to those days
The store also does double points on pre-paid cards for cell phone service, Uber, and even "gift" cards that can be used to purchase groceries in the future.
I travel a lot for my company and typically use Uber when out of town and I get re-reimbursed by my company.
So, for those who weren't paying attention, this means I get double gas points for Uber trips that my company pays for.
So with all of the above we typically hit around 70-80 cents off per gallon. We then buy a 'gift card' for $100-$150 get the double points and max out the gas savings.
So $1 off on gas that will last us another 3 months and then we do it all again. A little planning and effort on our part and we save $100 a year.
i'm sure many of you could save the same amount if not more. The gas cans alone could probably double the savings for many of you
My opinions are barely worth the paper they are written on here, but hopefully they can spark some new ideas, or at least a different train of thought