Costco is one of the best places to buy gas in Menomonee Falls very cool people that work there friendly assistance is excellent would recommend to be a member to anyone Costco is got it going on we love Costco
of course it's members only...it's COSTCO
best people around .always stop my gas and snacks :)
Good location
Small station. People are always friendly but not always behind the counter waiting to check out customers.
don't sell diesel, but have artificial low price on sign
staff is friendly