WEX Fuel Card Integration for Fuel Fraud Detection & Audit

WEX Fuel Card Fraud Detection | Fleevo

Fleevo for WEX fuel cards

Fleevo automatically collects your WEX fuel card transaction data and checks every purchase for fuel card fraud, misuse, and suspicious activity. Out of the box it validates each transaction against the vehicle's location, fuel level, and fuel type, flagging anything that doesn't add up, all reconciled against your fleet records. Because Fleevo gathers the data for you, there are no manual exports and no spreadsheets to maintain, and your fuel findings sit alongside the rest of your fleet records in one platform.

Fleevo works with WEX fuel cards across your fleet, wherever your vehicles fuel.

Card fuel and onsite fuel, in one place

Many fleets fuel from two sources: WEX cards out on the road, and an onsite fuel tank back at the depot. Those two streams usually live in separate systems, which makes total fuel spend almost impossible to see at a glance.

Fleevo brings both together. We automatically collect your WEX card transactions, and if you run an onsite or bunkered fuel tank, we can ingest that data too. The result is a single view of every litre your fleet uses, wherever it was drawn, so you can monitor total fuel spend, spot discrepancies across both sources, and reconcile everything against your vehicles and drivers.

Onsite tanks are also where fuel theft most often hides. Siphoning typically shows up as a sharp drop in tank level while no vehicle is authorised to draw fuel, often overnight, and it goes unnoticed when tank data lives in a separate log. By bringing depot fuel into the same view as card transactions, Fleevo makes those discrepancies visible.

Why fuel fraud is a problem worth solving

Fuel is one of the largest controllable costs in any fleet, and one of the most exposed to misuse. Recent research from Shell Fleet Solutions found that fleets lose roughly 2 to 5% of their annual fuel spend to misuse, and that over 70% of fleet managers now rank reducing these costs as a top priority.

The problem is that fraud rarely announces itself. It shows up as small, plausible-looking transactions spread across months: a card used while its assigned vehicle is parked, a fill larger than the tank can hold, or spend that quietly drifts above a route's expected consumption. Manual statement review almost never catches these patterns, which is exactly where automated checking earns its place.

What Fleevo does with your WEX data

Detects fraud from day one. Fleevo ships with built-in detections that run automatically, including location validation, fuel level inconsistency, and fuel type mismatches, so you're protected the moment your data connects.

Lets you add your own rules in plain English. Describe any behaviour you want to catch in plain language, and Fleevo's AI turns it into a live rule that runs across your fuel data, no threshold menus to configure.

Collects your data automatically. Fleevo gathers your WEX transactions for you, so there are no manual CSV exports, no uploads, and no month-end reconciliation scramble.

Adds your onsite tank. If you fuel from a depot tank, Fleevo can ingest that data alongside your card transactions for a complete fuel picture.

Reconciles spend against your records. Fleevo ties fuel cost back to mileage and vehicle data, so finance and operations work from the same numbers.

Keeps fuel in your wider operational picture. Fuel data sits alongside the rest of your fleet records, so nothing lives in a separate silo.

Detection that works out of the box, and bends to your fleet

Fleevo protects you from the start with a set of default detections. Location validation flags a card used where its assigned vehicle isn't. Fuel level inconsistency catches a fill larger than the tank can hold, or one that doesn't match the vehicle's consumption. Fuel type mismatches surface likely misfuelling. These run automatically against the vehicle, mileage, and location data Fleevo already holds.

When you want to go further, you simply describe the rule in plain English, for example "alert me when a card is used more than 50 miles off route" or "flag any second fill within an hour." Fleevo's AI interprets what you've written and applies it as a live check, so the system catches exactly what matters to your operation without any technical setup.

Getting started

1. Tell us about your WEX account so Fleevo can begin collecting your transaction data automatically.
2. Add your onsite tank (optional) if you fuel from a depot, so all fuel spend lands in one place.
3. Set up a fuel usage rule in plain English and Fleevo's AI does the work for you automatically, turning what you describe into live checks across your fuel data.
4. Review your findings in your Fleevo dashboard, where default detections are already running from day one.

Do I still need my WEX account?

Yes. Fleevo reads and analyses your WEX transaction data; it does not replace your fuel card account. WEX continues to handle card issuance, pricing, and invoicing.

More details about the Fuel & EV Management Product.