IFTA Reporting Gaps: Where Telematics Fuel Data Falls Short

Telematics fuel data leaves IFTA gaps because GPS-tracked mileage never automatically reconciles with fuel card purchase records. That mismatch — invisible in Samsara, Motive, and Geotab’s native IFTA exports — is what triggers audits.

IFTA deadlines hit four times a year: January 31, April 30, July 31, and October 31. Miss one, and you’re looking at a minimum $50 penalty per late return in most jurisdictions, plus interest on unpaid taxes. Get audited, and the exposure grows fast. Most IFTA audits circle back to the same core problem: miles reported don’t reconcile with fuel purchased. If your telematics platform and fuel card data live in separate silos, you’re building your quarterly report on a cracked foundation.

The gap isn’t hypothetical. It’s structural — and it exists in nearly every fleet running off-the-shelf telematics without a dedicated reconciliation layer.

Why Telematics Mileage Alone Isn’t Enough for IFTA

IFTA requires you to report jurisdiction-level miles driven and gallons purchased in each state or province. Telematics handles the mileage side reasonably well. GPS pings, odometer reads, and route mapping can give you solid jurisdiction mileage data — when the hardware is functioning and the vehicle is connected.

But IFTA also requires:

• Gallons purchased per jurisdiction — tied to actual receipts, not estimated consumption
• Fleet MPG per vehicle — calculated from real odometer reads and real fuel card transactions
• Reconciled totals — where mileage-based fuel consumption and actual gallons purchased match within an acceptable tolerance

Telematics doesn’t touch your fuel card. Samsara, Motive, and Geotab can tell you where a truck drove. They can’t tell you whether the driver purchased 87 gallons in Oklahoma or 120 gallons in Texas unless you manually import that fuel card data — and even then, reconciliation is on you.

What Samsara’s IFTA Reporting Actually Does (and Doesn’t Do)

Samsara does offer an IFTA mileage report. It pulls GPS-tracked miles by jurisdiction and generates a summary you can use as an input for your quarterly filing. That’s genuinely useful — it replaces manual trip log tabulation for mileage.

What Samsara’s IFTA reporting does not do:

• Automatically ingest fuel card data from providers like Comdata, WEX, or Fuelman and reconcile it against mileage records
• Flag mileage-fuel mismatches per vehicle that could indicate a data gap, a hardware outage, or a missing fuel receipt
• Calculate taxable gallons owed per jurisdiction — you still have to take the mileage output and run the math manually or in a spreadsheet
• Catch dark miles — stretches where a vehicle traveled without GPS connectivity or where hardware was offline, creating jurisdiction mileage gaps that are invisible until an auditor asks for them

Motive’s IFTA tools have similar boundaries. The platform can export jurisdiction mileage summaries, but the fuel card reconciliation step and the final tax calculation remain manual work for your compliance team.

This isn’t a knock on either platform. They’re telematics companies. Their core job is tracking vehicle location and driver behavior — and they do that well. IFTA fuel tax reconciliation is a different discipline, and it requires data from sources they don’t natively own.

The Three Most Common IFTA Data Gaps in Telematics-Dependent Fleets

1. Fuel card transactions that don’t match GPS location

A driver fuels in Missouri. The GPS shows the truck was in Kansas that day. The discrepancy can be legitimate — the driver crossed the state line to a cheaper station — or it can signal fraud. Either way, your IFTA report needs a defensible answer. Raw telematics data won’t give you one.

2. Missing mileage from connectivity gaps

GPS units go offline. Cellular dead zones exist. If a truck drove 200 miles through rural Montana and the telematics logged 40, your jurisdiction mileage is understated. IFTA auditors compare your reported miles-per-gallon against industry benchmarks. A fleet reporting 9.2 MPG when your equipment should average 6.5 will get a second look — and so will one reporting 14 MPG because GPS miles are undercounted.

3. Mixed fuel types and reefer fuel

Reefer units and APUs consume diesel that is not subject to IFTA. If your fuel card purchases include reefer fuel and you don’t strip it out before calculating taxable gallons, you’re overpaying. Most telematics platforms have no visibility into reefer fuel consumption at all.

The Formula IFTA Auditors Use — and How to Beat Them to It

IFTA auditors apply a straightforward reasonableness test:

Average Fleet MPG = Total Miles ÷ Total Gallons Purchased

They compare your reported average against the expected range for your vehicle class. For Class 8 over-the-road trucks, the industry benchmark is roughly 5.5–7.5 MPG (ATRI, 2023 Operational Costs of Trucking). For medium-duty delivery vehicles, expect 8–12 MPG depending on route type.

If your calculated MPG falls outside that range in either direction, expect scrutiny. Too high means your mileage may be overstated or your fuel data is incomplete. Too low means your fuel purchases may include non-IFTA gallons, or you have a data integrity problem.

Run this check before you file, not after. Pull your total GPS miles for the quarter, pull your fuel card totals, and calculate fleet-wide MPG by jurisdiction. Outlier vehicles — trucks showing 18 MPG or 3 MPG — are your audit risk.

How Link-X Closes the Gap

Link-X sits on top of your existing telematics and fuel card data — Samsara, Motive, Geotab, and Comdata are all supported — and does the reconciliation work automatically.

Instead of pulling a mileage export from Samsara and a transaction report from Comdata and manually matching them in a spreadsheet, Link-X ingests both data streams, standardizes the records, and surfaces mismatches before they become filing errors. Jurisdiction mileage, fuel purchases by state, per-vehicle MPG calculations, and reefer fuel exclusions all live in a single dashboard.

That same unified data layer powers the rest of your fleet management operation. Preventive maintenance schedules, work orders, DVIRs, tire tracking, and warranty recovery all run off the same standardized vehicle records — so the odometer read that feeds your IFTA filing is the same one triggering your next PM interval and validating your warranty claim. When your data agrees across every function, compliance stops being a quarterly scramble and becomes a byproduct of how you run the fleet day to day.

Link-X doesn’t replace your telematics. It makes your telematics data usable for compliance, cost accounting, and fleet health analysis in ways the telematics platform alone was never designed to do.

What to Do Before Your Next IFTA Deadline

Whether you’re using Link-X or not, here’s the minimum checklist before each quarterly filing:

• Pull jurisdiction mileage from your telematics platform and verify coverage dates — check for gaps
• Export fuel card transactions and strip out non-IFTA gallons (reefer, off-road equipment)
• Calculate per-vehicle MPG for the quarter and flag any unit outside your expected range
• Reconcile fuel purchase location against GPS location for high-variance transactions
• Document everything — IFTA auditors can go back three years in most states

The fleets that sail through IFTA audits aren’t necessarily the ones with perfect data. They’re the ones who found and explained their discrepancies before the auditor did.

If you want to see what your current telematics and fuel card data actually look like when reconciled — jurisdiction mismatches, MPG outliers, and all — talk to the Link-X team. Most fleets find their first reconciliation report surfaces at least one filing exposure they didn’t know existed.