Diesel fuel optimization for trucking fleets is purchasing software (where each truck fuels, how many gallons, and at what net price on the route dispatch already built), not telematics and not a fuel card. ValveRide Flow sits in that bucket: a plan on every dispatch, on the discounts you already negotiated, across 48 states with data, that keeps replanning as the truck moves.
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Updated September 2026 · 8-minute read
Fleets save on fuel in two completely different ways: burning fewer gallons (less idling, smoother driving, better maintenance: the telematics bucket) and paying less per gallon (fueling at the right stops, on the right contracts, in the right tax jurisdictions: the purchasing bucket). The buckets stack, but they are not substitutes, and most buyer confusion comes from vendors blurring the line.
This guide is about the purchasing bucket, and within it, the five categories below, ordered roughly from most to least automated.
ValveRide Flow, Trimble Expert Fuel, Fuel Router
What it does: Take the route a truck is already running and decide where it should fuel, how many gallons to buy at each stop, and at what net price, factoring posted prices, the fleet's negotiated discounts, state fuel taxes, tank capacity, and hours of service. This is fuel purchasing optimization: same routes, same loads, cheaper gallons.
Best for: Fleets that dispatch trucks on customer-driven routes and buy meaningful volumes of diesel, from small fleets on up. The more trucks and the more states crossed, the more the math compounds.
The fine print: The category splits on one axis that matters: whether the plan is computed once at dispatch and locked, or re-optimized as the truck moves. Trimble Expert Fuel is the long-standing enterprise incumbent, built around dispatch-time fuel plans and sold to truckload carriers; its own materials describe it as designed for fleets of 50 or more trucks, typically as part of a Trimble TMS suite. Fuel Router positions itself as a lighter route-aware tool that recommends stops along existing routes without rerouting, with published pricing of $50 per truck per month as of August 2026. ValveRide Flow re-optimizes continuously mid-route, enforces the fleet's own contracts, and reconciles every claimed dollar against the actual fuel card transaction.
Mudflap
What it does: A mobile app that gives drivers discounted prices at participating truck stops, typically independents and regional chains. The network negotiates volume pricing and passes part of it to the driver or fleet.
Best for: Owner-operators and small fleets that do not have negotiated fuel contracts of their own. If you have no discounts today, a network is the fastest way to get some.
The fine print: A discount network is a source of discounts, not an optimizer of them. It answers “where can I get a deal?”, not “given my route, my tank, my taxes, and all my contracts, where should this truck fuel and for how many gallons?” The two are complementary for some fleets, and a fleet that already holds strong Pilot, Love's, TA, or fuel-card contracts usually gets more from enforcing those than from adding another network.
AtoB, Coast, RTS, WEX, Comdata, EFS
What it does: Payment instruments with controls: per-driver limits, merchant restrictions, transaction reporting, fraud alerts, and network discounts at partner chains. Modern entrants like AtoB and Coast add software-first spend management on top.
Best for: Every fleet needs one; this is how trucking pays for fuel. The discounts attached to these cards are also the raw material a route-aware optimizer enforces.
The fine print: A fuel card tells you what was spent after the fact and gives you a discount schedule. It does not decide where the truck should have fueled, and the savings figures card vendors report are calculated by the vendor with no independent verification. That last point is exactly the gap per-transaction reconciliation exists to close.
Trucker Path, GasBuddy
What it does: Maps and apps showing posted fuel prices, amenities, parking, and reviews, powered by large driver communities. Drivers or dispatchers look at the map and make the call.
Best for: Owner-operators making their own fueling decisions, and any driver who wants amenity and parking intel alongside price.
The fine print: Visibility is not optimization. A price map shows the posted cash price: not your contract's net price at that stop, not the IFTA tax consequence of fueling in this state versus the next one, and not whether your tank and HOS clock make a cheaper stop 80 miles ahead actually reachable. For a fleet, leaving that math to each driver's judgment is exactly the leak optimization software exists to close.
Samsara, Geotab, Motive, Verizon Connect
What it does: GPS, ELD compliance, idle monitoring, driver behavior scoring, and maintenance, with fuel dashboards built on top. These reduce how much fuel the fleet burns: less idling, smoother driving, better-maintained trucks.
Best for: Most fleets above a handful of trucks already run one, and should. The consumption-side savings are real.
The fine print: Burning fewer gallons and paying less per gallon are different problems. Telematics attacks consumption; fuel optimization attacks purchasing. They stack, and several telematics ELDs (Samsara, Motive) are exactly how an optimizer like Flow delivers plans to the driver, so this is an integration relationship, not a substitution.
Named tools in this category, with what each does in its own right. ValveRide Flow is ours, so weigh that entry accordingly. Everything claimed about the others comes from their own published materials, dated where it matters. A product appears here only if it could be independently corroborated, which is why a few names that circulate online are absent.
Route-aware fuel optimizer, continuous
Route-aware fuel optimizer, dispatch-time
Route-aware fuel optimizer, lightweight
Route-aware fuel optimizer, pre-trip
Fuel purchase optimization plus mileage and IFTA
Fuel discount network
Fuel cards and spend management
Telematics with fuel features
| Approach | Examples | How it saves | Decision-making | Savings verification |
|---|---|---|---|---|
| Continuous route-aware optimization | ValveRide Flow | Enforces the fleet's own contracts + IFTA tax math on every dispatch; re-optimizes mid-route | Automatic, per dispatch, updates as the truck moves | Per-transaction reconciliation; prediction accuracy published |
| Dispatch-time route-aware optimization | Trimble Expert Fuel, Fuel Router | Optimized fuel purchase plan computed when the load is dispatched | Automatic at dispatch; plan typically fixed once issued | Varies by vendor; ask |
| Discount network | Mudflap | Network-negotiated prices at participating stops | Driver picks from in-network deals | Vendor-reported |
| Fuel cards / spend management | AtoB, Coast, RTS, WEX, Comdata, EFS | Card-program discounts, spend controls, fraud screening | None; payment layer, not a planner | Vendor-reported |
| Price visibility | Trucker Path, GasBuddy | Shows posted prices; human decides | Manual, per driver | None |
| Telematics fuel features | Samsara, Geotab, Motive | Consumption reduction: idling, driver behavior, maintenance | Coaching and alerts | MPG trends (different bucket) |
Vendor characterizations reflect each company's own published positioning as of June 2026; pricing and features change; verify with the vendor. Yes, the highlighted row is ours; the four questions below are how to pressure-test that claim and everyone else's.
Flow is built for fleets that already hold negotiated fuel discounts (a fuel-card program, direct chain deals, or both) and want them enforced on every truck, every dispatch, without a dispatcher in the loop. Plans land in the driver's ELD next to the load, re-optimize as the truck moves, and every claimed dollar reconciles against an actual transaction. Growth is month-to-month for fleets with a back office. Enterprise adds managed integrations, automatic replanning, and SLAs.
And honestly, when it's not the buy: if your fuel problem is idling and driver behavior rather than purchase price, that is a telematics project, not a purchasing one. Owner-operators, though, are not a wait-until-later case. Flow Solo runs the same engine for $25 per truck per month, works by text message with no app, and finds the cheapest tax-adjusted diesel along every route even before any negotiated discount exists, because fueling in the right state at the right stop moves the net price on its own. Add discounts later and the same plans start enforcing them.
Purchasing software. It decides where each truck should fuel, how many gallons to buy, and at what net price, given the route dispatch already built, live prices, the fleet's negotiated discounts, IFTA tax across 48 states with data, tank capacity, and hours of service. It does not change routes. A fuel card is how you pay and where those discounts live. Telematics reduces gallons burned. Flow is the purchasing layer dispatch runs on top of both.
A fuel card is how the fleet pays for fuel and where its negotiated discounts live. Fuel optimization software is what makes sure those discounts actually get used: it routes each truck to the stop where the fleet's net price (posted price minus contract discount, adjusted for state tax) is best, within the route and the driver's hours. Most fleets need both; the card supplies the contracts, the optimizer enforces them on every dispatch.
Purchasing-side savings typically land in the $0.08 to $0.15+ per gallon range for fleets with negotiated contracts, depending on lanes, contract quality, and how badly discounts were leaking before. A truck running 100,000 miles a year at 6 MPG burns roughly 16,700 gallons, so each $0.10/gal recovered is about $1,670 per truck per year. The honest caveat: any vendor's savings number is only as good as its verification. Ask whether claimed savings are reconciled against actual transactions or just modeled.
It helps at every size; what changes is the entry point. An owner-operator with no negotiated contracts still saves from route and tax math alone: state fuel-tax differences and corridor price spreads move the net price even at posted retail, which is why Flow Solo ($25 per truck per month, works by text message, no app required) includes cheapest tax-adjusted diesel along the route from day one. A discount network or fuel-card program adds negotiated rates on top, and once a fleet holds real contracts, per-truck optimization compounds quickly. That is why per-truck monthly pricing with no fleet minimums matters.
Four questions separate the category: (1) Is the plan locked at dispatch, or re-optimized as the truck moves, prices change, and the HOS clock runs down? (2) Does it apply our existing contracts, or push us into the vendor's own fuel network? (3) Are claimed savings reconciled per-transaction against our fuel card data, or modeled? (4) Will the vendor publish its price-prediction accuracy, meaning how close its predicted pump prices run to what drivers actually paid?
Researching the market? Our live US diesel price data is free to use and cite; it is the same feed our engine runs on.
Every claim about another vendor on these pages comes from their own public materials and is dated.
Continuous re-optimization, your contracts, per-transaction reconciliation, published prediction accuracy. A 30-minute demo answers all four with your fleet's own numbers.