Compare the real monthly and annual savings of the WEX and Comdata fuel cards on your fleet's gallons, after fees.
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About WEX
The WEX Fleet Card is the most widely accepted fleet card in the United States, working at roughly 95 percent of fuel stations plus tens of thousands of service locations. Its strengths are universal acceptance, detailed purchase controls with driver IDs, automatic accounting data on every transaction, tax exemption reporting and access to the WEX EDGE savings network that also discounts tires, hotels and other business costs.
About Comdata
Comdata is a trucking-focused fleet card accepted mainly at truck stops, best known for its FleetAdvance mobile app that steers drivers to the best-priced fuel nearby and for offering access to cash prices, which often sit below posted card prices. It supports customized spending limits and real-time transaction data.
WEX and Comdata pricing
WEX pricing is quote-driven, with independent reviews commonly reporting around $4 per card per month for the core Fleet Card. Rebates run 3 to 15 cents per gallon inside the WEX EDGE savings network and 1 to 3 cents elsewhere, with the top rates tied to fueling location and monthly volume; the truck-stop oriented Fleet Cross Roads card averages around 15 cents in-network. Comdata savings span a wide 8 to 40 cents per gallon depending on location and negotiated program, among the largest ranges of any card in our guide, with fees varying by account; its cash-price access can add savings beyond the stated rebate. The calculator applies each card's discount to your monthly gallons, subtracts card fees, and compares net savings and effective price per gallon at the current diesel price.
How they compare
WEX's core strength is acceptance breadth: its discounts are modest outside the EDGE network, but the card works nearly everywhere, so its savings are dependable rather than spectacular. Comdata's cash-price access at truck stops can beat headline rebates elsewhere, making it strongest for diesel fleets running truck-stop lanes who will use FleetAdvance to chase price. The honest comparison is a blended one: estimate what share of your gallons would actually earn each card's in-network rate on your real routes, set the discounts accordingly, and let the annual difference decide.
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