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Cost-per-mile crept up 4.2% last year. What's driving it?
A breakdown of what's actually pushing CPM up across the industry — parts, labor, fuel, or something subtler.
The 4.2% headline
Industry-wide cost-per-mile (CPM) crept up 4.2% in 2025. That's not nothing, but it's also not the whole story. When we decomposed the number across our customer base — using per-asset utilization data — the drivers weren't what the trade press suggested.
● 12 in service ·
● 3 due soon
The real culprit: parts + labor, not fuel
Fuel was roughly flat. Parts jumped 8% and labor jumped 6%. Operators who front-loaded preventive maintenance held their CPM closer to 2% — because they caught wear before it cascaded into bigger, costlier repairs.
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