Fleet Fuel-Loss Calculator
See what diesel and gas theft is really costing your fleet each year — and how fast a bolt-on locking fuel door pays for itself. Adjust the numbers to match your operation.
Your Fleet
Industry fuel-loss estimates commonly land in the 2–5% range for exposed commercial fleets. Use your own figure if you track it.
Your Numbers
Estimates only, based on the figures you enter and a conservative retail door price of $190 per truck. Fleet volume pricing is lower, which shortens payback further. Actual results vary by operation.
Real-World Fleet Results
Fuel loss dropped to near zero across the yard
A regional public-works fleet outfitted 30-plus F-550 and Ram 5500 chassis after repeated overnight siphoning at an unsecured lot. Reported fuel shrinkage fell off almost immediately after the bolt-on doors went on.
Stopped repeat siphoning at remote job sites
A utility contractor running trucks parked at remote and unsecured sites installed doors fleet-wide. The exposed fuel and DEF caps were the weak point — once covered, the repeat losses stopped.
Paid for itself inside the first month
A grading contractor lost several hundred dollars of diesel from a single truck before protecting the fleet. At roughly the cost of one tank of stolen fuel per truck, the doors paid back fast.
Added as a standard buildout upgrade
A service-body upfitter now offers the locking fuel door as a visible security line item during buildout, giving fleet buyers a factory-finished theft deterrent from day one.
Illustrative, industry-representative scenarios. Individual results vary by fleet and operating conditions.
Fleet Fuel-Theft Questions
How much does fuel theft cost a work truck fleet?+
It depends on fleet size, fuel throughput, and how exposed the trucks are, but fuel shrinkage of 2–5% is common for commercial fleets that park at unsecured lots and remote job sites. For a 25-truck fleet using 400 gallons per truck each month at $4.25 per gallon, a 3% loss is roughly $15,000 per year. Use the calculator on this page to estimate your own number.
How fast does a locking fuel door pay for itself?+
For most fleets the payback is measured in weeks to a few months. At a conservative retail price of about $190 per truck — and lower with fleet volume pricing — a single prevented tank of stolen diesel often covers the cost of the door on that truck.
How many doors do I need for my fleet?+
Plan on one door per exposed fuel filler. Trucks with a separate DEF cap that is also exposed may need a second door. Our fleet team can confirm the right count and part numbers for your Ford and Ram chassis mix and quote volume pricing.
Do you offer volume pricing for fleets?+
Yes. Multi-truck operations, municipalities, and upfitters get volume discounts below the single-unit retail price. Request a fleet quote and we will respond within 24 hours.