Ask any owner-operator what changed between 2024 and 2025 and the answer is usually the same: everything got more expensive, and the repair invoice grew faster than the fuel bill. The American Transportation Research Institute’s 2026 Analysis of the Operational Costs of Trucking put a hard number on that feeling: the industry-average cost to run a truck reached $2.336 per mile in 2025, a 3.4 percent jump over 2024 and the highest figure in the report’s history. Strip out fuel, which barely moved, and costs still climbed 4.2 percent to $1.854 a mile. For a truck running 100,000 miles a year, that’s not rounding error. It’s tens of thousands of dollars in additional overhead before a single load gets booked.
Where the Money’s Actually Going
Repair and maintenance was the second-fastest-rising line item ATRI tracked, up 8.6 percent in a single year, trailing only tolls at 13.2 percent. Tires climbed 6.4 percent and driver benefits rose 6.6 percent, while fuel and driver pay were the only categories that grew slower than inflation. None of that is surprising to anyone who has paid a four-figure bill to replace a diesel particulate filter or a selective catalytic reduction sensor. Emissions hardware that didn’t exist on trucks two decades ago now accounts for a meaningful chunk of every major service interval, and it fails in ways a basic oil-and-filter shop was never built to diagnose.
Some of the increase is structural rather than seasonal. Heavy-duty diagnostic scanners capable of talking to modern emissions and engine-control systems can cost independent shops thousands of dollars before a technician ever opens the hood, and that assumes the shop has access to the OEM software in the first place. Parts pricing hasn’t cooperated either, as tariff exposure keeps rippling through the supply chain in ways that show up quietly on distributor earnings calls even as combined parts-and-labor pricing tracked by the Technology & Maintenance Council and Decisiv actually eased slightly in early 2026. For anyone weighing a new heavy-duty pickup instead of fixing an old one, shifting emissions rules are changing that calculation too.
Not Enough Hands to Turn the Wrenches
Even carriers with cash to spend on repairs are running into a simpler problem: nobody’s available to do the work. ATRI’s labor research found that 65.5 percent of diesel repair shops were understaffed in 2025, with an average of 19.3 percent of technician positions sitting empty. Diesel technician training isn’t a weekend certificate. It’s a genuine trade skill set built around engine control units, emissions after-treatment, and increasingly the electrical architecture that runs telematics and driver-assist systems. When a shop is short-staffed, the bottleneck stops being parts availability and becomes queue position, and every day a truck waits for an open bay is a day it isn’t earning.
The Data Fight in Washington
That queue is exactly why trucking’s biggest trade groups spent 2026 lobbying for a federal right-to-repair law most passenger-car owners have never heard of. The Right to Equitable and Professional Auto Industry Repair Act, known as the REPAIR Act and introduced by Rep. Neal Dunn, R-Fla., as H.R. 1566, would stop manufacturers from using software locks or legal threats to keep owners and independent shops from accessing the same diagnostic data available to dealers. The bill carries 43 bipartisan co-sponsors, split almost evenly between both parties. In May, the Owner-Operator Independent Drivers Association and NATSO sent Congress a joint letter insisting commercial trucks stay covered, warning that carving them out would undercut a trucker’s ability to “preserve commercial drivers’ ability to choose where and how their trucks are serviced.” OOIDA had already told the committee months earlier that it would fight the entire bill if heavy-duty vehicles were excluded.
Congress being Congress, the version that actually moved wasn’t the whole ask. On May 21, the House Energy and Commerce Committee advanced H.R. 7389, the Motor Vehicle Modernization Act of 2026, folding in a narrower repair-data provision that largely codifies existing voluntary agreements between automakers and independent shops rather than writing a broad new legal right. It’s a similar pattern to what just played out in a very different corner of the repair world, where John Deere’s grip on its own diagnostic software finally cracked under legal and regulatory pressure. Progress, but negotiated and incremental rather than sweeping. Dunn has publicly said the committee-passed language doesn’t fully reflect the original REPAIR Act and is pushing colleagues to restore stronger provisions before a floor vote, which means whether commercial trucks end up fully covered in whatever eventually reaches the president’s desk is still an open question.
The Twist Enthusiasts Should Notice
Buried in the same bill is a provision that has nothing to do with fleet operators and everything to do with anyone who has ever bolted a lift kit or a winch bumper onto a truck. Section 221, based on SEMA’s ADAS Functionality and Integrity Act, gives NHTSA 18 months to study how the ten most common vehicle modifications affect the cameras and sensors behind automatic emergency braking and lane-keeping systems, then two additional years to write calibration guidelines if the research supports it. That timeline matters because automatic emergency braking becomes mandatory on new passenger vehicles and light trucks starting with the 2029 model year, and there’s currently no federal standard for recalibrating those systems after a lift kit, larger tires, or a heavier front bumper changes a truck’s ride height and sensor geometry. The same bill that could decide whether an independent shop gets to plug into your truck’s computer might also decide whether your suspension lift keeps your automatic braking system honest, which says a lot about how tangled vehicle software and data access have become well beyond the dealership service counter.
What Owners Can Actually Do About It
None of the legislative back-and-forth changes this year’s invoice, but it does change strategy. Preventive maintenance schedules matter more when a breakdown means an open-ended wait for a bay rather than a same-day fix, and telematics fault alerts that flag a failing sensor before it strands a truck on the shoulder are cheap insurance next to a tow bill and a missed delivery window. Aftermarket parts and mobile repair services can shave real time off a job when OEM-only sourcing is the actual bottleneck rather than the part itself. And the data suggests owners should think twice before assuming a newer truck automatically means fewer headaches. With equipment prices and interest rates both elevated, fleets are already stretching replacement cycles well past the seven-year mark that Heavy Duty Trucking flags as the point where maintenance costs start climbing faster than a truck payment would.
The Bigger Bill
There’s also a quieter cost most owner-operators don’t price in until renewal time: insurance. Underwriters pay close attention to average fleet age and breakdown frequency, and a fleet leaning on older trucks with deferred maintenance is a different risk profile than one cycling newer equipment, a gap that shows up as a line item on the next policy renewal rather than the next repair bill. Rising repair costs, a thin bench of diesel technicians, and a repair-rights bill still being negotiated in real time aren’t three separate problems. They’re the same problem, landing on three different invoices, and what happens in Washington over the next few months will decide how big at least one of those invoices gets.
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