Diesel mechanics — formally classified by the Bureau of Labor Statistics as Diesel Service Technicians and Mechanics (SOC 49-3031) — earned a median annual wage of approximately $56,520 as of the most recent BLS data, which equals roughly $27.17 per hour.
Employment in this field is projected to grow about 2 percent through 2032, a slower rate than the national average, yet the large size of the occupation means approximately 27,800 openings are expected each year.
These openings stem from a combination of new positions and the ongoing need to replace experienced technicians who retire.
Diesel mechanics service, inspect, and repair diesel-powered vehicles and equipment including semi-trucks, buses, construction equipment, and agricultural machinery.
Wages typically vary based on the type of employer, geographic region, industry specialization, and certifications such as those offered by the National Institute for Automotive Service Excellence (ASE).
For related trade profession salaries, compare the mechanic salary and the truck driver salary.
Diesel Mechanic Salary Overview (2026)
According to the U.S. Bureau of Labor Statistics, diesel service technicians and mechanics (SOC 49-3031) earned a median annual wage of approximately $56,520 ($27.17/hr) as of the most recent OEWS survey data. The percentile breakdown below illustrates the full wage distribution for this occupation.
| Percentile | Annual Salary | Hourly Rate |
|---|---|---|
| 10th | $35,000 | $16.83 |
| 25th | $44,000 | $21.15 |
| 50th (Median) | $56,520 | $27.17 |
| 75th | $71,000 | $34.13 |
| 90th | $88,000 | $42.31 |
These figures are national estimates. Regional labor markets and employer type may shift individual wages meaningfully above or below the median.
To see exactly how wages like $27 an hour translate to annual, monthly, and after-tax take-home, our guide on $27 an hour is how much a year breaks down every pay period. For other rates in the range above, browse our hourly wage conversion guide index.
Diesel Mechanic Pay by Experience Level
Experience level significantly influences a diesel mechanic's earning potential.
Newly trained technicians typically start at wages near or below the 25th percentile while developing hands-on proficiency, while master technicians with advanced certifications and years of experience tend to earn wages approaching the 90th percentile.
| Experience Level | Typical Annual Range |
|---|---|
| Entry-Level (0–2 years) | $35,000 – $44,000 |
| Mid-Career (3–8 years) | $44,000 – $65,000 |
| Experienced (9+ years) | $65,000 – $88,000+ |
Technicians who pursue ASE Master Technician status or specialize in high-demand areas such as emissions systems, advanced diagnostics, or heavy construction equipment may see faster wage growth within their career arc.
Diesel Mechanic Salary by State and Region
Geographic location plays a meaningful role in diesel mechanic compensation. States with robust freight, construction, and agricultural industries tend to generate the strongest demand and highest wages, according to BLS OEWS data.
Top-Paying States
Based on BLS data, states that typically report the highest median wages for diesel service technicians include Alaska, Washington, California, Nevada, and Wyoming.
Median wages in these states may range from $62,000 to $75,000, reflecting both higher costs of living and intensive demand from freight and energy industries.
Diesel mechanics in California should weigh the cost of living in California against their nominal wages, while those considering Texas — a major freight corridor state — will find the cost of living in Texas considerably more favorable.
Regional Patterns
The Pacific Coast and Mountain West regions generally offer above-average wages.
The Midwest and South, while home to large volumes of heavy trucking and agricultural equipment, typically report wages closer to or slightly below the national median.
Urban areas near major freight hubs and ports may offer higher wages than rural locations, though rural areas in mining or agricultural regions can also command competitive pay.
Factors That Affect Diesel Mechanic Pay
Beyond experience and geography, several additional factors may influence a diesel mechanic's compensation significantly.
Industry Specialization
Diesel mechanics employed in mining, oil and gas extraction, or specialized construction tend to earn higher wages than those servicing municipal bus fleets or light commercial trucks.
The complexity of the equipment, remote working conditions, and equipment downtime costs typically support higher compensation in these sectors.
Employer Type
Trucking and warehousing companies, government agencies, construction firms, and dealerships all employ diesel mechanics.
Government and transit employers often offer structured pay scales with strong benefits packages, while private companies may offer higher base wages but variable benefit quality.
Certifications
ASE certification in diesel-specific areas (such as Medium/Heavy Truck series T1–T8) is widely recognized by employers and may qualify technicians for higher wages and advancement. Some employers offer pay premiums specifically for ASE-certified technicians.
Shift Differentials and Overtime
Many diesel mechanics work non-standard hours to minimize fleet downtime, and shift differentials for evening, overnight, or weekend work can materially increase annual earnings above base wages.
Overtime pay under the Fair Labor Standards Act (FLSA) applies to most hourly technicians.
Diesel mechanics with steady overtime earnings should review 401(k) contribution strategy options and build a high-yield savings account for emergency reserves.
Diesel Mechanic Career Outlook
The BLS projects employment of diesel service technicians and mechanics to grow approximately 2 percent through 2032 — slower than the national average of 3 percent — reflecting stabilization in heavy-vehicle fleet sizes and modest technological displacement.
Despite this slower-than-average growth rate, the sheer size of the occupation means approximately 27,800 openings are expected annually, with the majority driven by retirements and attrition rather than new job creation.
The transition to electric commercial vehicles (EVs) may reshape job duties over the long term, but heavy-duty diesel equipment is expected to remain in widespread use through the 2030s due to infrastructure and energy density requirements for long-haul and heavy-load applications.
Technicians who develop skills in both diesel and electric powertrains may position themselves for stronger long-term demand.
Diesel mechanics entering the workforce should apply salary negotiation principles when comparing fleet employer offers, and review retirement savings targets appropriate for their income trajectory.
Frequently Asked Questions
What is the median diesel mechanic salary in 2026?
According to the U.S. Bureau of Labor Statistics, diesel service technicians and mechanics (SOC 49-3031) earned a median annual wage of approximately $56,520 — about $27.17 per hour — as of the most recent OEWS data. Wages vary by region, employer type, and experience.
What education or training is required to become a diesel mechanic?
Most diesel mechanics complete a postsecondary vocational training program lasting 6 months to 2 years at a community college or trade school, earning a certificate or associate degree.
Some enter the field through on-the-job apprenticeships.
ASE certification, while not universally required, is widely valued by employers and may increase earning potential.
How does overtime affect a diesel mechanic's annual pay?
Overtime can meaningfully increase annual earnings for hourly diesel mechanics.
Under the Fair Labor Standards Act, hours worked beyond 40 per week are typically paid at 1.5 times the regular rate.
Technicians in essential-services roles — such as fleet maintenance — may regularly work overtime, which can add several thousand dollars to annual income.
Which industries pay diesel mechanics the most?
Based on BLS industry data, diesel mechanics in mining, oil and gas extraction, and specialized construction tend to earn the highest wages, often well above the $56,520 national median.
These industries demand technicians in remote or hazardous locations and cannot afford extended equipment downtime, which drives higher compensation.
Is the diesel mechanic field growing?
The BLS projects about 2 percent employment growth for diesel mechanics through 2032, slower than the national average.
However, approximately 27,800 openings per year are expected due to retirements and turnover.
Demand is expected to remain stable as diesel-powered heavy equipment remains in widespread use, particularly for long-haul trucking and construction.
Diesel mechanics can also compare their earning potential to the welder salary and plumber salary as alternative skilled trade career paths.
Sources & References
- U.S. Bureau of Labor Statistics, Occupational Outlook Handbook: Diesel Service Technicians and Mechanics — https://www.bls.gov/ooh/installation-maintenance-and-repair/diesel-service-technicians-and-mechanics.htm
- U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics: Diesel Service Technicians and Mechanics (SOC 49-3031) — https://www.bls.gov/oes/current/oes493031.htm
- U.S. Department of Labor, Fair Labor Standards Act (FLSA) Overtime Rules — https://www.dol.gov/agencies/whd/flsa
Last updated: April 27, 2026