Prescriptive fuel optimization for commercial fleets

The cheapest pumpis rarely the cheapest stop.

FuelGuru turns tank level, your fleet-net prices, taxes, detour and policy into one prescription per trip: where to stop, when, and how many gallons. Delivered into the driver's navigation and measured against what was bought.

74% → 98%+ compliance at a 2,500+ truck carrierPrices updated several times a dayNo new hardware

Scroll to watch one decision
Measured in operationFuelGuru
74%Prescription compliance, from 74%within four months, 2,500+ truck dedicated carrier
$30 to $60Per-trip opportunityshown live on enterprise route data at FreightWaves F3
3 connectionsSet up oncevehicle state, fuel economics, trip execution

This trip174 gal at your fleet-net rate2 stops3.1 mi out of routeboth compliant

See a prescription on your own lane.

Enter a lane, a truck and a tank level. FuelGuru returns the stops and the gallons, priced at your fleet-net rate.

Example trip. Station prices and detours are illustrative; the compliance result is the published figure.

Tank34%
At dispatch

Five pumps ahead. One sign is cheapest.

The truck leaves at 34% tank with 214 miles to the next good price. Five stations sit on or near the lane, each with a sign price. Most fleets stop at the cheapest sign.

Four economics

The cheapest pump is rarely the cheapest stop.

FuelGuru re-prices every candidate: your fleet price instead of the public price on the sign, state fuel tax normalized, the detour in miles and minutes, and the price at the hour the truck will actually arrive. The cheapest sign finishes last.

The prescription

Where, when, and how many gallons.

62 gallons at exit 42, not a full tank: arrive at 21%, leave at 58%, and buy the other 108 gallons 214 miles on at the lower price in the next state, with a 17% reserve. Two stops, 3.1 miles out of route in total.

In the cab

The plan reaches the driver, not a report.

The prescribed stop appears inside the driver's turn-by-turn with the station and the gallons. No app switch, no phone call, nothing to look up.

Adapt

Prices move. The plan moves with them.

Fleet admin disables exit 42 fleet-wide. Every affected trip re-prescribes from the truck's current state: stop one moves to exit 63, 66 gallons, still inside the 2-mile out-of-route policy.

Verify

Prescribed versus bought, per stop.

The fuel-card transaction lands next to the prescription: station, gallons, price paid. Match. Per driver, per stop, per trip, the fleet finally sees compliance instead of spend.

Measured in operation

74% to 98%+ compliance in four months.

At a dedicated carrier running more than 2,500 trucks, prescription compliance moved from 74% to above 98% within four months of putting the plan inside the driver's navigation.

01 · At dispatch

Five pumps ahead. One sign is cheapest.

The truck leaves at 34% tank with 214 miles to the next good price. Five stations sit on or near the lane, each with a sign price. Most fleets stop at the cheapest sign.

02 · Four economics

The cheapest pump is rarely the cheapest stop.

FuelGuru re-prices every candidate: your fleet price instead of the public price on the sign, state fuel tax normalized, the detour in miles and minutes, and the price at the hour the truck will actually arrive. The cheapest sign finishes last.

03 · The prescription

Where, when, and how many gallons.

62 gallons at exit 42, not a full tank: arrive at 21%, leave at 58%, and buy the other 108 gallons 214 miles on at the lower price in the next state, with a 17% reserve. Two stops, 3.1 miles out of route in total.

04 · In the cab

The plan reaches the driver, not a report.

The prescribed stop appears inside the driver's turn-by-turn with the station and the gallons. No app switch, no phone call, nothing to look up.

05 · Adapt

Prices move. The plan moves with them.

Fleet admin disables exit 42 fleet-wide. Every affected trip re-prescribes from the truck's current state: stop one moves to exit 63, 66 gallons, still inside the 2-mile out-of-route policy.

06 · Verify

Prescribed versus bought, per stop.

The fuel-card transaction lands next to the prescription: station, gallons, price paid. Match. Per driver, per stop, per trip, the fleet finally sees compliance instead of spend.

07 · Measured in operation

74% to 98%+ compliance in four months.

At a dedicated carrier running more than 2,500 trucks, prescription compliance moved from 74% to above 98% within four months of putting the plan inside the driver's navigation.

The leak

Why fuel optimization
still leaks money.

Most fleets already have a fuel plan. The money goes missing between the plan and the pump.

  • 01

    The fuel plan is built on assumptions

    Tank levels, prices and routes change after dispatch. Prices can change several times a day. A plan built at 9am for a 4pm fill can already be stale.

  • 02

    The cheapest pump may not be the cheapest stop

    Detour, tax, toll and the next fueling opportunity change the answer.

  • 03

    The plan often never reaches the driver

    A prescription in a back-office report cannot create savings. At one 2,500+ truck carrier, only 74% of prescriptions were followed before the plan moved into the driver's navigation.

  • 04

    Nobody measures prescription vs execution

    Fuel-card spend shows what was bought, not what should have been bought.

The prescription

A prescription,
not a recommendation.

Per trip: ordered stops with the station, the expected arrival, the gallons to buy, the price at your card rate, and the detour to get there. "Go to this station" is a recommendation. "Buy 62 gallons here, then 108 at the next preferred stop" is a prescription.

Route from origin to an 8:00 delivery with the truck at 34% tank and fuel stop 1 prescribed 1.4 miles off route, arriving 2:48 PM: 62 gallons at stop 1, arrive at stop 2 with 17% reserve, then 108 gallons at the lower fleet-net price
Illustrative

Conventional stop plan

  • 160 gal at stop 1
  • Truck leaves full
  • No plan for the next purchasing opportunity

FuelGuru prescription

  • 62 gal at stop 1
  • Arrive at stop 2 with 17% reserve
  • 108 gal at the lower fleet-net price

How much to buy comes from the fuel already on board, the reserve you require at arrival, the route ahead, the price opportunities on it, tank capacity and fleet policy. Sometimes the best fill is not a full fill.

Fuel stop 1

Illustrative

Exit 42 · in your network

1.4 mi off route · arrive with 21% in the tank

Buy62 gal
Fleet-net price$3.12 / gal
Detour1.4 mi · 4 min
Arrive tank21%
Depart tank58%

Why this stop

  • ✓In your fleet network
  • ✓$0.17/gal advantage at your card rate
  • ✓Inside the 2-mile out-of-route policy
  • ✓Better next-stop economics

Trip prescription

Stop 162 gal here
Stop 2108 gal · 214 mi ahead
Reserve at stop 217%
Out-of-route3.1 mi total

Total fuel cost and saving vs fill-anywhere shown per trip

Four economics

The cheapest pump
is not always the cheapest stop.

Four effects stack. Most of them are invisible to anything reading a public price feed.

  • 01

    Your fleet-net price

    The rate your fuel program actually gives you at that location. Not the sign price, not a national average.

  • 02

    State + tax economics

    Station prices normalized for state fuel taxes and IFTA, so stops in different states are compared on what the fleet actually pays.

  • 03

    Detour economics

    The miles and minutes to reach the station, priced against the pump saving and held inside your out-of-route policy.

  • 04

    Price at arrival

    Hours of service are in the plan, so each stop uses the latest pricing applicable to the truck's planned arrival window, not the file that happened to be available at dispatch.

Fuel strategy

Fleet admin
Minimum arrival reserve15%
Maximum out-of-route2.0 mi
Fill strategyPartial allowed
Preferred networks
Preferred pricing locationsPrefer
Stops set back from the highwayPenalize
Disabled stopsExclude fleet-wide

Policy

Your fuel strategy,
on every trip.

Set the policy once. FuelGuru applies it consistently across every eligible trip. Full or partial fill, the out-of-route cap, preferred networks and contracted pricing locations, penalties for stops set back from the highway, and stops a fuel manager has disabled.

Disable a stop once and every affected trip re-prescribes. Nobody has to call.

Drivers

The best fuel stop is the one
your driver will actually fuel up at.

A mathematically perfect stop that the driver skips saves nothing.

Stop acceptance

FuelGuru learns which stops drivers actually use.

Every stop carries a score built from observed behavior. FuelGuru prescribes where the score is high. When a location keeps getting skipped, that becomes a signal it may no longer be practical, even when the price looks attractive on paper.

Execution

FuelGuru decides. NavGuru executes.

The prescribed stop appears inside the driver's turn-by-turn with the station and the gallons. Not a separate app the driver is supposed to remember to check. If the stop becomes unavailable or the trip changes, the route and the fuel plan recompute together.

Keeping another in-cab surface? The prescription goes into your TMS trip plan or that surface instead.

See NavGuru →

Route economics

A fuel decision can change
the economics of the entire route.

One dry-van lane, Harvey, Illinois to Philadelphia. FuelGuru priced six commercial routes on tolls plus fuel. The spread between them was $326 per load. The sharper finding was the price of time.

Incremental cost per load versus minutes saved against the lowest-cost route: the practical route saves 100 minutes for $148 more, the fastest saves 123 minutes for $326 more

FuelGuru analysis of a Harvey, IL to Philadelphia, PA dry-van lane, published August 2026. Fuel prices, tolls and trip economics vary with timing, equipment, payment method and fleet configuration.

$1.48

per minute for the first 100 minutes of time saved

$7.74

per minute for the last 23 minutes to the fastest route, about $464 an hour

"Avoid tolls" is not a strategy. "Always take the toll road" is not a strategy either. Put a price on time, fuel and tolls, then decide.

FuelGuru returns practical, fastest, cheapest and alternate routes with drive time, vehicle-specific tolls, fleet-net fuel cost, prescribed stops and gallons, and total trip economics. FuelGuru prices the economics. NavGuru executes the chosen route in the cab.

Fleet routing

Routes built on
how your fleet actually drives.

A generic truck route knows the road network. It does not know your yards, your customers' gates, or the roads your drivers have learned to stay off. Your fleet's GPS history does.

Routes from a terminal to a customer DC: the learned preferred route used on 314 fleet trips, a learned-avoid segment bypassed on 94% of fleet trips, and a work zone blocked by the fleet admin 2 minutes ago, live on the next route and re-route
Fleet GPS trips, brighter is moreGeneric truck routeLearned avoidBlocked by fleet admin

Illustrative network. FuelGuru learns road preferences from each fleet's own historical GPS trips. Segment preferences set by a fleet admin apply to new routes and re-routes.

Learned from your trips

FuelGuru reads your fleet's historical GPS: the approaches, access roads and corridors your trucks actually use, and the ones they consistently avoid.

Tuned by road segment

Know a road better than the data does? Prefer, avoid or block any segment.

Real-time updates

The change applies the moment you save it, on the next route and every re-route. Nobody waits for a map update.

Every route, and every fuel stop priced along it, starts from your fleet's road network. Not a one-size-fits-all truck map.

The loop

Prescribe. Deliver.
Adapt. Verify.

One decision, carried all the way from dispatch to the fuel-card line. What actually happened sharpens the next prescription on that lane.

  1. 1

    Before the truck moves

    Prescribe

    Combine the trip, current fuel state, fleet pricing and policy. Price every candidate stop. Return the route, stops and gallons.

  2. 2

    In the cab

    Deliver

    Put the prescription into NavGuru, the TMS trip plan or the driver's existing in-cab workflow. No navigation switch required.

  3. 3

    As the trip changes

    Adapt

    Missed stop, off route, lower tank than expected, prices moved. Recalculate from the truck's current state instead of forcing it back to a stale plan.

  4. 4

    After the pump

    Verify

    Match GPS and fuel-card transactions against the active prescription: stop, gallons, price paid and compliance, per driver, per stop, per trip.

LearnVerified outcomes feed stop acceptance and the next prescription on that lane.

Proof

Proven with a 2,500+ truck
dedicated carrier.

Measured in operation

74% → 98%+

fuel prescription compliance within four months of putting the plan in the driver's navigation

Demonstrated on fleet route data

$30 to $60

per trip fuel optimization opportunity, shown live on enterprise route data at FreightWaves F3

Austin Henderson
“The utilization of GPS data, fuel-in-tank telemetry, and route planning allows the MapUp products for managing and auditing toll expenses, as well as fuel purchase planning. These tools afford us the opportunity to better utilize data in our edge environments to run a more efficient fleet.”
Austin Henderson
CIO, FirstFleet
FirstFleet logo
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Integrations

Works with the stack
already running your fleet.

Three connections, set up once at onboarding: vehicle state, fuel economics and trip execution. Plus MapUp's licensed station-level price feeds, updated multiple times a day. No rip and replace.

In · Vehicle and telematics

GPS, tank level, odometer, vehicle state

Telemetry sources include

Geotab
Samsara
Platform Science
Motive

FuelGuru

Fleet economics engine

Prices every candidate stop and route on your economics and policy. Prescribes stops and gallons. Verifies against transactions.

Out · Dispatch and execution

TMS trip plan · NavGuru · in-cab workflow

NavGuru

In · Fuel economics

Fleet card rates and transaction files under your authorization, plus station-level pricing

Card programs include

WEX
EFS
Comdata

For agents and developers

Give your dispatch agent
the real economics of the trip.

MapUp introduced FuelGuru MCP in August 2026, bringing fleet-specific fuel, toll and commercial-route economics directly into dispatch agents, TMS copilots and load boards. The agent handles the conversation. FuelGuru handles the transportation math.

The first production Model Context Protocol server built for fleet-specific fuel purchasing, toll and commercial truck routing decisions. FreightWaves, 13 Aug 2026

Agent asks

Illustrative

Truck 1427 is in Nashville with 62 gallons. Load delivers tomorrow 08:00 in Charlotte. Which route keeps the most margin, and where should he fuel?

FuelGuru MCP

Structured answer

RoutePractical, alternates priced
Drive timeHOS-feasible for 08:00
TollsVehicle-specific, by route
Fuel1 stop · gallons · fleet-net cost
Trip economicsTotal cost and margin

Responses come back as structured data, so a partner can drop the numbers into a ranking, a UI card or a voice answer. The same engine is available over the FuelGuru API.

Start with your own lanes

Prove FuelGuru on trips
you already drove.

You do not need to deploy FuelGuru, or change driver behavior, to find out whether the opportunity exists. Send historical trips, vehicle assumptions, fuel purchases and pricing. FuelGuru replays your top lanes and returns the prescribed routes, stops, gallons and modeled economics against what actually happened.

What you get back

  • Actual vs prescribed fuel spend
  • Route and toll economics
  • Out-of-route miles
  • In-network usage
  • Savings by lane, corridor and hub
  • Driver adherence, with card data connected

How FuelGuru measures savings →

FAQ

Frequently Asked Questions
from live fleets.

No. The prescription can go into your TMS trip plan or a third-party in-cab surface. You get the tightest closed loop, including mid-trip re-prescription and live measurement, when NavGuru is the navigation.
FuelGuru recalculates from the truck's current position, tank level and the prices ahead. It finds the best remaining prescription, not the old one. The miss is recorded and shows up in compliance.
FuelGuru compares the active prescription with GPS and fuel-card transactions: was the prescribed stop used, what was bought, what was paid against the price at prescription, and how the actual trip compared with the plan. Reported per driver, per stop, per trip.

See all FuelGuru FAQs →

One decision per trip

See how much
your fleet can save.

Run a prescription on a lane of yours, or let us replay the trips you already drove.

  • Prove it on lanes you already drove, before any driver changes a thing
  • Three connections, set up once at onboarding
  • Every prescription verified against the fuel-card line