Diesel Mechanic

Average Diesel Mechanic Salary Nationwide


Overview and Basic Information


Diesel mechanics are skilled in the unique trade of repairing and maintaining diesel fuel vehicles. Depending on their place of employment, diesel mechanics work on vehicles from semi-trucks to small sedans. For any automobile that runs on diesel fuel, diesel mechanics are the people who keep them on the road.

Example diesel mechanic job description

Our auto repair shop is seeking an experienced and professionally trained diesel mechanic to be a part of our team. Typical job duties for the diesel mechanic include running diagnostic tests, repairing diesel vehicles and performing preventative maintenance. The ideal person for this position will be eager to provide the best auto service and willing to communicate with customers on behalf of the shop. If you have a background in auto mechanics and are looking for somewhere to show off your skills, we want you to apply.

Typical duties include:

  • Run diagnostic tests using diagnostic equipment and analyze the results to recommend repairs or maintenance

  • Perform routine maintenance such as oil changes, tire rotations and filling fluids

  • Troubleshoot repairs and test drive vehicles to make sure they are working properly

  • Repair and replace diesel engines, brake systems, steering mechanisms, transmissions and electrical systems

  • Work alongside service technicians and the automotive team to provide excellent problem-solving and customer service

  • Maintain records of all services and clients

  • Manage an inventory of parts and supplies for the diesel department

  • Maintain a clean work station and shop environment

  • Assist with all other duties including customer service and requests


  • High school diploma or GED

  • Valid driver’s license

  • Excellent written and verbal communication skills

  • Knowledge of truck mechanics, construction vehicles and diesel technology

  • Ability to work as a part of a team

  • Basic math and computer skills

  • Experience with vehicle diagnostic tools and systems

  • Able to stand for long periods of time

  • Able to lift and move heavy objects

  • Proven organizational skills

Preferred qualifications:

  • 1-3 years experience as a diesel mechanic

  • Mechanical or automotive engineering degree

  • ASE Diesel Certification

  • CDL

Common questions about diesel mechanic jobs

How much does a diesel mechanic make?

Full-time diesel mechanics make an average of $22.76 per hour or $47,350.00 per year.

What are the education requirements?

All employers require diesel mechanics to have a high school diploma or GED and most prefer an automotive degree as well as ASE Diesel Certification.

Career paths for diesel mechanics

With experience and proper training, diesel mechanics can move to other exciting positions such as heavy vehicle mechanic or aviation mechanic. 

The future of diesel mechanics 

According to the Bureau of Labor Statistics, job growth for diesel mechanics is expected to be 5% over the next 10 years, which is as fast as all other positions.

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