Diesel Mechanic in Oklahoma: Salary, License Requirements, and How to Start
Repair and maintenance
Oklahoma employs 3,970 diesel mechanics, with a statewide median of $55,340 and wide variation by city and experience. Here is the real wage data, the exact Oklahoma licensing picture, and where to train.
What Diesel mechanics Earn in Oklahoma (May 2025)
- Oklahoma median pay
- $55,340 (May 2025)
- Starting range (10th percentile)
- $37,250
- Experienced (75th percentile)
- $62,580
- Top earners (90th percentile)
- $76,130
- Employed in Oklahoma
- 3,970
- U.S. median (for comparison)
- $60,660 (May 2024)
Wages vary substantially by metro. Median annual pay for diesel mechanics in major Oklahoma markets:
- Tulsa
- $57,730 (980 employed)
- Oklahoma City
- $57,270 (1,510 employed)
- Fort Smith
- $52,480 (380 employed)
- Enid
- $49,030 (80 employed)
- Lawton
- $48,310 (70 employed)
What That Pay Is Worth in Oklahoma
Prices in Oklahoma run about 12% below the national average (cost-of-living index 87.8 vs a U.S. baseline of 100, 2024), so the $55,340 median stretches to roughly $63,030 in national buying-power terms.
Job Outlook in Oklahoma (2022–2032)
Oklahoma is projected to grow diesel mechanics employment +3.6%, faster than the +2.4% projected nationally. The state expects about 350 openings a year, counting both growth and workers who retire or move on.
Oklahoma License and Certification Requirements
No state license; ASE (Medium/Heavy Truck) certification — regulated by the No license required — ASE certification is the standard.
- Oklahoma does not license diesel technicians.
- Complete a diesel technology program or an employer apprenticeship.
- Earn ASE medium/heavy truck certifications as you gain experience.
Official requirements: No license required — ASE certification is the standard →
Training in Oklahoma
Trucking, the oil/gas field, and manufacturing drive demand. Engine-specific training (Cummins, Cat) raises pay.
Real training providers and registered apprenticeships in Oklahoma include:
- Autry Technology Center — Certificate
- Caddo Kiowa Technology Center — Certificate
- Canadian Valley Technology Center — Certificate
- Central Technology Center — Certificate
Is This the Right Move for You?
Best for: People who like large, powerful machinery and want solid wages without a 4-year degree.
Think twice if: Grease, diesel exhaust, heavy components, and shop environments sound miserable rather than satisfying.
Why it's resilient: Diesel engines power trucks, buses, heavy equipment, and generators — hands-on diagnosis and repair that cannot be done remotely.
First Steps
Look for diesel technology programs at community colleges and vocational schools, or apply directly as a shop helper.
Frequently Asked Questions
How much do diesel mechanics make in Oklahoma?
The median wage for diesel mechanics in Oklahoma is $55,340 per year (May 2025, BLS). Entry-level pay (10th percentile) starts around $37,250, and top earners (90th percentile) make about $76,130. Pay varies by metro and years of experience.
What license or certification do you need to become a Diesel Mechanic in Oklahoma?
No state license; ASE (Medium/Heavy Truck) certification, overseen by the No license required — ASE certification is the standard. Oklahoma does not license diesel technicians.
Is being a Diesel Mechanic a good career in Oklahoma?
Diesel engines power trucks, buses, heavy equipment, and generators — hands-on diagnosis and repair that cannot be done remotely.
Which Oklahoma metros pay diesel mechanics the most?
Among Oklahoma metro areas, Tulsa leads at $57,730, followed by Oklahoma City ($57,270), Fort Smith ($52,480). Local pay tracks regional demand and cost of living, so the highest-paying metro isn't always the best net move.
Where can I train to become a Diesel Mechanic in Oklahoma?
Real Oklahoma options include Autry Technology Center, Caddo Kiowa Technology Center, Canadian Valley Technology Center. Most diesel mechanics start with an accredited program, then earn the credential the state or employer requires.
Is Diesel Mechanic a growing career in Oklahoma?
Oklahoma projects diesel mechanics employment to change +3.6% from 2022 to 2032, with about 350 openings a year — a growing field in the state.
Sources and Verification
Wage data: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (May 2025), Oklahoma statewide and metro estimates for SOC 49-3031. Licensing summary compiled from the No license required — ASE certification is the standard (2026-06-11). Requirements change — always confirm current rules with the board and verify program costs and outcomes before enrolling.
BLS Occupational Outlook · O*NET Oklahoma wages · Oklahoma licensing/certification source
Employment projections: Projections Central / BLS Employment Projections (2024–2034); Cost of living: BEA Regional Price Parities.
Pay percentiles describe current workers, not entry-level offers; training costs and local demand vary, so verify locally before committing money or quitting a job.