Maintenance Cost Per Mile Calculator — Fleet Maintenance CPM
Calculate your truck maintenance cost per mile across all categories. Tires, oil, PM service, brakes, electrical and unexpected repairs — broken down by CPM.
🔧 Maintenance Cost Per Mile Calculator
How to Use This Calculator
- Enter annual miles — total miles driven per truck per year.
- Enter tire costs — all tire purchases prorated annually. Class 8 trucks use 18 tires — budget $400–$600/steer, $250–$400/drive.
- Enter PM and oil costs — oil changes every 15,000–25,000 miles plus quarterly PM service.
- Include unplanned repairs — budget $2,000–$5,000/year for unexpected repairs even on newer trucks.
Worked Example
120,000 miles/year, $6,000 tires, $2,400 PM, $1,800 brakes, $3,500 unplanned repairs.
- Total annual: $13,700
- Maintenance CPM: $13,700 ÷ 120,000 = $0.1142/mi
- Tire CPM: $6,000 ÷ 120,000 = $0.0500/mi
$0.114/mi is below average — a well-maintained newer truck. An older high-mileage truck might run $0.18–$0.25/mi as major components approach end of life.
Frequently Asked Questions
Class 8 truck maintenance typically runs $0.12–$0.20/mile for a well-maintained fleet on a normal replacement cycle. Older trucks (5+ years, 500,000+ miles) can run $0.20–$0.35/mile. Tires alone account for $0.04–$0.07/mile. Trailers add another $0.02–$0.04/mile.
Modern synthetic-oil Class 8 engines typically run oil change intervals of 15,000–25,000 miles depending on the engine, oil specification, and operating conditions (idle time, short hauls, extreme temps reduce interval). Follow manufacturer recommendations — skipping oil changes is the most expensive false economy in trucking.