Best Fuel Cards for FedEx Ground Contractors (2026 Real-Operator Review)

By Curtis Cox · May 23, 2026

Fuel is one of the three largest variable costs in a FedEx Ground contracting operation, alongside driver pay and vehicle maintenance. For most contractors, fuel runs between 8 and 15 percent of revenue, depending on route geography, vehicle mix, and diesel prices in the operating area. On a $2M annual revenue operation, that is $160,000 to $300,000 a year going into truck tanks.

The fuel card you choose materially affects what that number looks like. It determines:

The per-gallon discount you receive at the pump
The network of stations your drivers can use (which affects route efficiency and driver downtime)
The reporting and reconciliation overhead your office team carries
Your fraud exposure (driver theft, lost cards, unauthorized purchases)
The cash flow timing on your fuel spend (billing cycles, credit terms)

This article compares the fuel card options that matter for FedEx Ground operators in 2026 — what they’re good at, where they fall short, and how to pick the right one for your operation.

A note on numbers: per-gallon savings change weekly with diesel prices and quarterly with vendor promotions. Treat the savings figures here as ballpark, not gospel. The structural strengths and weaknesses of each card are more durable.

What a fuel card actually does

A fuel card looks like a credit card but works differently in three important ways:

Per-gallon discounts at participating stations. The card issuer negotiates wholesale pricing with fuel networks and passes some of that discount to you. Discounts are typically denominated in cents per gallon and vary by station, fuel type, and volume.
Purchase controls. You can limit what each card can buy (diesel only, no merchandise, no cash advances), when it can be used (business hours, specific days), and where (specific stations, specific regions).
Detailed reporting. Every transaction is captured with the driver ID, vehicle ID, gallons, price per gallon, location, and time. This data is critical for cost accounting, fraud detection, and reconciliation against driver activity (which is the foundation of fuel-theft detection — see the upcoming article on that topic).

A regular business credit card does none of these things well. A fuel card does all three.

For a FedEx Ground contractor, the fuel card is the single most important purchase-control tool in the operation. Get it right, and your fuel spend is auditable and competitively priced. Get it wrong, and you are paying full pump price and you have no way to detect theft.

WEX Fleet Cards

WEX is the largest fleet fuel card issuer in the United States and the most common starting point for FedEx Ground contractors.

Strengths:

Largest acceptance network. WEX is accepted at virtually every diesel pump in the country. Your drivers will almost never have to detour for fuel.
Mature reporting platform. WEX Online provides clean transaction-level data, with driver ID and vehicle ID tracking, that integrates into most accounting systems.
Strong purchase controls. Per-card limits, day-of-week restrictions, time-of-day restrictions, fuel-only locks, geographic restrictions. The control matrix is excellent.
Multiple program tiers. WEX offers different programs (Fleet, Fleet One, EFS, depending on operation profile) with different discount structures and credit terms. Your operation can typically find a tier that fits.

Limitations:

Per-gallon discounts are real but modest for most fleet sizes. Don’t expect dramatic savings — expect 4-8 cents off per gallon at most stations, with some higher-discount locations.
Customer service has been variable. Account management at WEX depends on whom you get assigned to. Some operators have outstanding reps; others have struggled.
Bundle pricing varies. If you’re a small fleet (under 10 trucks), you may not get the same per-gallon discount as a 50-truck operation. Negotiate.

Best fit: Most FedEx Ground contractors. WEX is the default for a reason — it works, the network is everywhere, and the reporting is solid.

Comdata

Comdata (now part of FleetCor) is WEX’s primary competitor in the fleet fuel card space. It serves trucking, fleet management, and corporate fuel programs across many segments.

Strengths:

Competitive per-gallon discounts, often slightly better than WEX at certain station networks (particularly Pilot/Flying J, Love’s, and TA/Petro locations).
Strong trucking-industry focus. Comdata’s product is built for over-the-road and fleet operations, and the cardholder experience reflects that.
Integration with truck stops and amenities that drivers actually use. If your operation involves overnight stops or longer-haul routes, Comdata’s truck-stop integrations are a plus.

Limitations:

Slightly smaller general acceptance network than WEX, though still excellent. Drivers in some regions may occasionally need to use a backup card at certain stations.
Account management varies, similar to WEX. Quality depends on whom you get.

Best fit: Contractors who run a meaningful portion of their volume through truck-stop locations or larger fuel networks. Often worth comparing against WEX side-by-side before deciding.

RTS Fuel Card

RTS Financial offers a fuel card specifically for trucking-industry customers, often as part of a broader bundle with their factoring services (though you don’t need to use their factoring to use the card).

Strengths:

Discounts at the major truck stops can be competitive, especially for fleets running over-the-road segments.
Trucking-industry-native customer service — the reps know the business.
Simple, transparent pricing structure with fewer hidden fees than some competitors.

Limitations:

Smaller acceptance network than WEX or Comdata at non-truck-stop locations. Your drivers may need a backup card for fueling at convenience stores or small stations.
Less mature reporting platform than WEX. Functional but not as polished.

Best fit: Contractors whose fueling pattern is heavily concentrated at major truck stops. Less ideal for last-mile routes that fuel at neighborhood stations.

How to actually choose

The headline question — “which card has the best discount?” — is the wrong question. The discount is one variable, and not even the most important one for most operations.

The right questions are:

1. Where do your drivers actually fuel?

If your routes pass several major truck stops, Comdata or RTS may give you better discounts at those specific networks. If your routes fuel at neighborhood stations near the delivery area, WEX’s broader network is more important than a slightly higher discount at locations your drivers don’t visit.

2. What is your acceptable acceptance-network gap?

If you can tell your drivers “only fuel at WEX-accepted stations,” you can rely on the broadest possible network. If you can’t enforce that — or if specific routes only have certain stations available — you need a card with maximum coverage even at the cost of slightly lower discounts.

3. How much purchase-control sophistication do you need?

If you have one truck, you can manage fuel spend by looking at the credit card statement. If you have ten trucks, you need card-level controls (driver ID, vehicle ID, fuel-only). If you have fifty trucks, you need station-level controls, time-of-day controls, and exception reporting. All three cards above handle this, but the depth of the control surface varies.

4. How will your office team reconcile the data?

If your bookkeeper is already familiar with WEX’s data export format, the cost of switching to Comdata is the cost of retraining the reconciliation workflow. If you’re starting from scratch, evaluate which platform’s data your accounting team finds easier to consume.

5. What credit terms make sense for your cash flow?

Some fuel cards bill weekly, some bi-weekly, some monthly. Some require collateral or deposits for new accounts. Get the terms in writing and align them with your cash flow cycle (FedEx pays weekly, so a weekly fuel billing cycle creates a clean match).

What I would actually do

For a contractor starting fresh today, the process I would follow:

Pull a sample week of fuel purchases by location. Where did your drivers actually fuel? Use that location set to evaluate each card’s per-gallon discount at those specific stations.
Calculate the annual discount differential. Take your gallons-per-year and multiply by the discount differential between candidate cards. The number is often smaller than you think — and that helps you focus on the non-price factors.
Demo the reporting platform. Spend 30 minutes with your bookkeeper looking at the actual export your accounting system would consume.
Get pricing in writing with all fees disclosed. Issuance fees, monthly account fees, replacement card fees, paper statement fees, late payment fees, transaction fees. All of them.
Pilot with a few trucks if you’re switching. Three to five vehicles for a month. Make sure the cards work everywhere your drivers fuel, and that the reporting works the way your team expects.
Negotiate. Fuel card pricing is negotiable, especially for fleets of 20+ vehicles. Don’t accept the rack rate.

Fuel theft detection is the higher-value next step

Even with the best fuel card, a contractor without a fuel-theft detection process is leaving money on the table.

Fuel theft happens in several forms: drivers fueling personal vehicles on the company card; drivers fueling when they aren’t logged in to a route; drivers exceeding tank capacity on a single transaction (which is impossible unless the fuel is going somewhere besides the tank); drivers fueling at unusual hours or locations.

A fuel card gives you the data. A fuel-theft detection process turns the data into protection.

The simple version of fuel-theft detection cross-references:

Fuel card transactions (from your card issuer)
Driver scanner login/logout times (from FedEx scanner data)
Vehicle GPS location (from your telematics platform)

Transactions that occurred when the driver wasn’t logged in, or when the vehicle wasn’t at the fueling location, are candidates for investigation. Most contractors do this manually in Excel — and most contractors do it once a quarter, at best. There’s a real opportunity to systematize it; we’ll have a separate article on the workflow.

For now, the takeaway: the right fuel card is the foundation, and theft detection is the payoff. Don’t pick a card without thinking about both.

The single sentence to take with you

If you remember one sentence from this article, make it this one:

Pick the fuel card that gives you the best per-gallon savings at the stations your drivers actually use, and the best purchase controls and reporting platform for your operation size. The headline discount is a feature, not a strategy.

WEX wins for most contractors on network coverage. Comdata wins for truck-stop-heavy operations. RTS wins for specific niches. The right answer depends on your actual fueling pattern, not on the marketing.

#vendor-review#finance