Several of the Montgomery County residents mentioned that they currently go to the Beltsville Costco to purchase cheap gas, and so they would benefit from a Costco station closer to home.
How cost-effective is it to go to the Beltsville Costco for gas instead of buying fuel at a local (non-Costco) gas station in the Wheaton area?
, a Kensington resident, raised this question and shared some financial calculations .
Based upon real time data, the cost of going to CostCo in Beltsville is higher than purchasing it in Wheaton...
Cost of Gasoline at local Wheaton station: $3.35/$40.20 to fill a 12 gallon tank,
Cost of Gasoline at Beltsville CostCo: $3.25./$39.00 to fill a 12 gallon tank,
Cost Savings of $1.20 to purchase a tank of gasoline at CostCo.
Is there really a savings?
Current Average MPG of American Automobiles is 18 MPG (per http://www.project.org/info.php?recordID=384).
The distance for a round trip from Wheaton to Beltsville is 20 miles. This equates to a cash outlay of $3.61 at the Beltsville CostCo prices to pay for the round trip from Wheaton to Beltsville and back again.
Subtracting the cost savings of the purchase of CostCo's lower grade gasoline ($1.20) from the cost of taking the trip ($3.61) equates to a "loss" of $2.40. Not to mention the time it takes to travel there and back (whatever your time is worth), idling in line, and the burning of fuel while waiting in line. (if a 15 minute wait consumes 1/5 of a gallon of gas while idling, then the cost for that is .65).
Overall loss: $3.05. You've been losing money buying gas at Beltsville.
Increase the cost per gallon another .05 per gallon to use your credit card at another station and you're still ahead.