Do You Know What It Really Costs to Run Your Truck?

Knowing Your Operating Cost Can Help You Make Better Decisions—and Keep More Money in Your Business

You know what you paid for fuel last week.

You probably know your truck payment, insurance payment, and maybe even what you spent on repairs last month.

But do you know what it actually costs you to operate your truck per mile?

For an owner-operator or fleet manager, knowing that number can be one of the most valuable pieces of information you have.

Because revenue tells you what you're bringing in.

Operating cost tells you what you're keeping.

Start With Your True Cost Per Mile

Every mile your truck travels costs money—even when you're not hauling a paying load.

Your operating costs generally fall into two categories: fixed costs and variable costs.

Fixed costs may include expenses such as:

Truck and trailer payments
Insurance
Permits and licensing
Technology and subscriptions
Other expenses that remain relatively consistent regardless of mileage

Variable costs change depending on how much the truck operates and may include:

Fuel
Tires
Preventative maintenance
Repairs
DEF and fluids
Tolls
Driver wages or compensation
Other mileage-related expenses

Add those costs together over a specific period and divide them by the truck's total miles during that same period. That gives you a much clearer picture of what each mile is costing your business.

And once you know your cost per mile, you can make better decisions about rates, loads, equipment, maintenance, and profitability.

Don't Calculate It Once and Forget About It

Knowing your operating cost isn't a once-a-year accounting exercise.

For the number to actually help you run your business, calculate your operating costs weekly or biweekly and then review them again at the end of each month.

Why both?

Your weekly or biweekly numbers tell you what's happening right now.

Maybe fuel prices jumped. Maybe one truck had an expensive repair. Maybe your miles were lower than normal. Maybe excessive idle time caused fuel consumption to increase.

You'll see those changes much faster when you're looking at the numbers throughout the month.

Then calculate your monthly numbers as well.

Over time, those monthly calculations give you a reliable average you can use for budgeting, setting rates, evaluating equipment, and making larger business decisions.

Think of it this way:

Your weekly or biweekly number keeps you informed.
Your monthly average helps you plan.

Both are important.

And don't be alarmed when your cost per mile changes from one period to another—it should. Trucking expenses aren't identical every week.

What matters is understanding why the number changed.

Fuel Is a Big Number—So Small Improvements Matter

For most trucking operations, fuel represents one of the largest variable expenses.

That means even a small improvement in fuel economy can add up over thousands of miles.

Consider a truck traveling 100,000 miles per year.

At 6 MPG, that truck would use approximately 16,667 gallons of fuel.

At 6.5 MPG, it would use approximately 15,385 gallons.

That's a difference of more than 1,280 gallons of fuel in one year.

Multiply that across an entire fleet and small improvements suddenly aren't so small.

While driving habits, load weight, terrain, weather, idle time, and speed all influence fuel economy, the mechanical condition of the truck matters too.

Maintenance and Fuel Efficiency Go Hand in Hand

Regular preventative maintenance isn't just about preventing breakdowns. Keeping equipment in good operating condition can also help the truck operate more efficiently.

Here are several areas worth watching:

Tire Pressure and Alignment

Underinflated tires create additional rolling resistance, requiring the engine to work harder to move the truck.

Improper alignment can also increase rolling resistance while causing irregular tire wear.

Maintaining proper tire pressure and alignment can help protect two expensive operating costs at once: fuel and tires.

Air and Fuel Systems

Your engine needs the proper combination of clean air and fuel to operate efficiently.

Restricted air filters, fuel system problems, or other performance issues can make the engine work harder than necessary.

Following the manufacturer's recommended service intervals and addressing performance changes early can help keep the engine operating as designed.

Engine Oil and Fluids

Regular oil changes aren't optional maintenance.

Using the correct oil and maintaining proper service intervals helps protect internal engine components and allows the engine to operate properly.

Transmission, differential, coolant, and other fluids deserve attention too. Preventative maintenance isn't just an oil change—it's taking care of the entire truck.

Wheel and Brake Issues

Dragging brakes, wheel-end problems, and other mechanical issues can create resistance that the engine has to overcome.

Sometimes a truck can still move down the highway while quietly costing you more money every mile.

That's another reason routine inspections matter.

Deferred Maintenance Doesn't Make the Expense Disappear

It's tempting to postpone maintenance when the truck is running and freight needs to move.

But delaying a $500 maintenance expense doesn't necessarily save $500.

If that neglected maintenance contributes to poor fuel economy, excessive tire wear, component damage, or an unexpected breakdown, the eventual cost can be much higher.

And the repair itself isn't always the biggest expense.

There's also:

Lost revenue while the truck is down
Roadside service or towing
Hotel or transportation expenses
Missed or delayed loads
Driver downtime
Potential damage to other components

The cheapest repair is often the one you catch before the truck breaks down.

Track Maintenance Like You Track Fuel

Most trucking businesses closely monitor fuel costs because they're visible every day.

Maintenance deserves the same attention.

Instead of looking at every repair as an isolated bill, track maintenance and repair costs by truck and by mile.

Over time, those numbers can help you identify patterns.

Is one truck consistently costing more to operate?

Are certain components failing more frequently than expected?

Has fuel economy gradually decreased?

Are repair costs reaching the point where replacing the equipment deserves consideration?

Good records turn maintenance history into information you can actually use to make business decisions.

Know Your Numbers Before You Accept the Load

Knowing your operating cost also changes how you look at revenue.

A load paying $2.50 per mile might sound good.

But whether it's actually profitable depends on what it costs you to run that mile.

Fuel prices change. Insurance changes. Parts prices change. Labor changes. Equipment ages.

Your cost per mile isn't a number you calculate once and forget.

Know today's number. Know your average. And know why they're different.

Because you can't confidently determine whether a truck, load, lane, or customer is profitable until you understand what it costs to operate the equipment serving them.

Maintenance Isn't Just a Repair Expense—It's a Business Strategy

At Open Bay Truck Repair, we know every truck has a job to do.

Keeping up with preventative maintenance can help reduce unexpected downtime, protect expensive components, improve reliability, and help your equipment operate as efficiently as possible.

Whether you're an owner-operator with one truck or managing an entire fleet, knowing your operating costs and maintaining your equipment gives you something extremely valuable:

Better information to run a better business.

And when it's time for maintenance, inspections, diagnostics, or repairs, we're here to help keep your trucks doing what they were built to do—making money.

Open Bay Truck Repair
1138 Jaguar Rd.
Joplin, MO 64804
417-208-5934
www.openbaytruckrepair.com