Diesel Mechanic in New Hampshire: Salary, License Requirements, and How to Start
Repair and maintenance
New Hampshire employs 1,040 diesel mechanics, with a statewide median of $71,390 and wide variation by city and experience. Here is the real wage data, the exact New Hampshire licensing picture, and where to train.
What Diesel mechanics Earn in New Hampshire (May 2025)
- New Hampshire median pay
- $71,390 (May 2025)
- Starting range (10th percentile)
- $52,730
- Experienced (75th percentile)
- $82,700
- Top earners (90th percentile)
- $99,590
- Employed in New Hampshire
- 1,040
- U.S. median (for comparison)
- $60,660 (May 2024)
Wages vary substantially by metro. Median annual pay for diesel mechanics in major New Hampshire markets:
- Boston
- $75,770 (3,110 employed)
- Manchester
- $73,890 (280 employed)
What That Pay Is Worth in New Hampshire
Prices in New Hampshire run about 4% above the national average (cost-of-living index 104.2 vs a U.S. baseline of 100, 2024), so the $71,390 median is worth closer to $68,512 once higher local prices are factored in.
Job Outlook in New Hampshire (2024–2034)
New Hampshire is projected to grow diesel mechanics employment +4.8%, faster than the +2.4% projected nationally. The state expects about 80 openings a year, counting both growth and workers who retire or move on.
New Hampshire License and Certification Requirements
No state license; ASE (Medium/Heavy Truck) certification — regulated by the No license required — ASE certification is the standard.
- New Hampshire 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 New Hampshire
Trucking, transit, and construction drive demand. Engine-specific training (Cummins, Cat) raises pay.
Real training providers and registered apprenticeships in New Hampshire include:
- Great Bay Community College — Certificate
- Lakes Region Community College — Certificate / Associate
- Manchester Community College — Certificate / Associate
- Nashua Community College — Certificate / Associate
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 New Hampshire?
The median wage for diesel mechanics in New Hampshire is $71,390 per year (May 2025, BLS). Entry-level pay (10th percentile) starts around $52,730, and top earners (90th percentile) make about $99,590. Pay varies by metro and years of experience.
What license or certification do you need to become a Diesel Mechanic in New Hampshire?
No state license; ASE (Medium/Heavy Truck) certification, overseen by the No license required — ASE certification is the standard. New Hampshire does not license diesel technicians.
Is being a Diesel Mechanic a good career in New Hampshire?
Diesel engines power trucks, buses, heavy equipment, and generators — hands-on diagnosis and repair that cannot be done remotely.
Which New Hampshire metros pay diesel mechanics the most?
Among New Hampshire metro areas, Boston leads at $75,770, followed by Manchester ($73,890). 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 New Hampshire?
Real New Hampshire options include Great Bay Community College, Lakes Region Community College, Manchester Community College. Most diesel mechanics start with an accredited program, then earn the credential the state or employer requires.
Is Diesel Mechanic a growing career in New Hampshire?
New Hampshire projects diesel mechanics employment to change +4.8% from 2024 to 2034, with about 80 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), New Hampshire 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 New Hampshire wages · New Hampshire 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.