CFN vs. Comdata: Cardlock Wholesale Pricing vs. Truck-Stop Discounts

Both the CFN card and the Comdata card promise the same thing: fuel priced below what you would pay at a regular pump. What they do not share is how they get you there.

CFN runs on a network of commercial cardlock stations with wholesale-based pricing. Comdata runs on thousands of retail truck stops with negotiated discounts. Same goal, two very different roads.

That difference is the whole decision. When fleets weigh CFN vs. Comdata, the right answer almost always comes down to one question: where do your trucks actually fuel?

This guide breaks down how each card prices fuel, where each one is accepted, what they cost in fees, and which type of fleet each one fits best.

Before we get into the details, here is how the two cards stack up on the factors fleet managers care about most.

A cardlock is an unattended commercial fueling site that only accepts fleet fuel cards. There is no cashier, no convenience store, and no retail traffic. Drivers pull in 24/7, swipe a card, enter a PIN, and the purchase posts straight to the fleet account.

These sites are designed for big vehicles. You get high-flow pumps, overhead clearance, and room for an 18-wheeler to turn around, which a crowded retail station rarely offers. Many cardlocks also carry dyed off-road diesel, so construction and agriculture fleets can fuel equipment on site.

Trucking companies, construction crews, agricultural operations, and any business running large diesel vehicles get faster fills and easier access than they would fighting for a pump at a busy retail station.

This is the model behind the CFN card, and it is the single biggest thing that sets it apart from Comdata. CFN sends your drivers to purpose-built commercial sites. Comdata sends them to retail truck stops.

If you are newer to this setup, here is a fuller explainer on what a cardlock station is.

Both cards charge less than the retail pump price, but they calculate that price in opposite ways.

CFN prices fuel off the Oil Price Information Service (OPIS) rack rate, which is the wholesale price stations themselves pay when they buy fuel in bulk. Your price is that daily OPIS rate for your region, plus taxes, plus a small margin from your provider (often in the range of four to six cents a gallon).

Because the price tracks the wholesale market instead of a posted sign, it typically runs 10 to 35 cents under retail, and higher where retail margins are steep. In high-cost western states like California, that gap can reach 30 to 60 cents a gallon.

Say retail diesel in your area is posted at $4.20 a gallon. A CFN price built off the regional OPIS rack rate, plus taxes and a five-cent margin, might land closer to $3.95. Across a fleet burning thousands of gallons a month, that quarter per gallon adds up fast.

One quirk to know: CFN prices are calculated after the fill, not posted at the pump. That can feel unfamiliar at first, but it also means every cardlock in a region prices off the same benchmark, so your cost stays steady instead of swinging 30 cents between two stations on the same street. You can read more on how CFN cardlock pricing works.

Comdata works off the posted retail price, then applies a discount. According to Comdata’s own fleet materials, fleets of 20 vehicles or fewer can save up to 40 cents a gallon at TA and Petro locations, and around 8 cents at other major chains like Pilot, Flying J, and Love’s.

Independent reviews put the typical per-gallon discount in the 8 to 25 cent range, depending on where you fuel. Fleets larger than 20 vehicles do not get the published rates. Instead, a Comdata representative negotiates custom pricing, so the headline numbers are a starting point, not a guarantee.

The practical takeaway: CFN’s savings are deepest where retail prices are high and you can fuel at cardlock. Comdata’s savings are deepest at specific truck-stop chains on national routes.

This is where the two cards separate the most, and it is easy to miss if you only compare discounts.

Comdata cards commonly carry a stack of fees. Reviews of the program point to per-card monthly fees, setup fees, transaction fees, and a strict late-fee policy. None of those are unusual for a large national provider, but they add up, and they quietly shrink the discount you signed up for.

CFN fees depend on the marketer you sign with, since each provider sets its own. Through C NRG, there are no card fees, no transaction fees, and no late fees. You pay for the fuel and the small margin, and that is it.

Here is the math that matters. A card charging $3 per card each month across a 20-card fleet is $720 a year in card fees alone, before setup or transaction charges. That is money the discount has to overcome before you see a dime of real savings. So a 40-cent discount is only worth 40 cents if you are fueling at the discounted locations often enough to clear those fees first.

For a fleet that fuels in mixed locations, a no-fee card with steady wholesale pricing can beat a high-discount card with a heavy fee load.

Always compare the total cost after fees at your real fueling spots, not the number on the brochure, a blind spot that fuel card comparison guides flag repeatedly.

Coverage is the clearest dividing line between these two cards.

CFN operates roughly 3,000 cardlock locations, and they concentrate heavily in seven western states: Arizona, California, Idaho, Nevada, Oregon, Utah, and Washington. California alone has more than 600 sites. Outside that western corridor, cardlock density thins out fast. The CFN card also works at 65,000 retail stations nationwide at pump price, so drivers are not stranded when they leave the cardlock network, but the wholesale savings live in the West.

Comdata’s strength is the reverse. With more than 8,000 truck stops in its national network, including TA/Petro, Pilot, Flying J, and Love’s, it is built for over-the-road fleets crossing state lines. If your trucks run coast-to-coast interstate lanes and fuel at major chains, that reach is hard to beat.

So the acceptance question is really a geography question. Western and regional fleets lean CFN. National long-haul fleets lean Comdata.

Both cards give fleet managers real control, so neither one leaves you exposed to driver misuse or fraud.

CFN offers:

With controls enabled, CFN accounts also carry fraud coverage up to $25,000 per card. You can see the CFN card’s controls for the full setup.

Comdata brings a strong toolkit too, including:

For a detailed breakdown of Comdata’s card types and features, we cover it in our full Comdata fuel card review.

The honest read is that controls are close to a wash. Both cards can lock down fraud and misuse if you set them up correctly.

Choose the CFN cardlock fuel card if your fleet operates regionally in the western states, fuels at cardlock sites, and wants wholesale pricing with no fees. It is a strong fit for construction, agriculture, and vocational fleets, especially any operation that needs off-road diesel and high-flow commercial pumps.

Choose Comdata if your fleet runs national long-haul, fuels mostly at large truck stops on interstate lanes, and pushes enough volume at TA/Petro that the discount clearly outruns the fees.

If your fleet sits in the middle, running mostly regional routes with the occasional long haul, weigh where the bulk of your gallons get purchased. The card that covers 80 percent of your fills at the best price usually wins, even when the other one looks better for the occasional trip.

There is one more factor the spec sheets do not show: support. Large national providers can be slow to reach when a card gets locked or a driver is stuck at 2 a.m. One fleet manager told us: “Some of the best customer service representatives I have ever had. If I ever have any type of question or concern, or help on something, they will help me immediately. And most times they will check back just to make sure all is well.” When a card issue can leave a driver stranded, that responsiveness is worth as much as any discount.

CFN and Comdata both beat retail fuel prices, but they do it for different fleets. CFN wins on wholesale pricing and no fees for western, regional, and vocational operations that fuel at cardlock. Comdata wins on national truck-stop reach for long-haul fleets that live on TA/Petro lanes.

Before you commit to either, do two things: map where your trucks actually fuel, and compare the total cost after fees, not just the headline discount. That is what tells you which card puts more money back in your tank.

If you want help running that comparison, talk to an expert on our team. We will pull a CFN quote for your nearest station and show you what wholesale pricing looks like for your routes. You can also compare our fuel card options side by side to find the right fit.