Diesel Mechanic Salary in the US: A Complete Overview

Do you love working on big equipment?

If the answer is yes, a career in the diesel industry may be a fit.

Diesel mechanics, also known as diesel technicians, work on heavy-duty equipment such as engines on ships, oil rigs, mining and agricultural machinery, playing a crucial role in various industries including power generation, construction and transportation. Diesel engines power a variety of different types of equipment, including:

• Power generators
• Locomotives
• Construction equipment
• Large trucks
• Forestry equipment

Without the techs who keep them running, so many of the conveniences we’re used to would simply not exist. They’re vital in keeping our country and economy moving forward.

So, how much do diesel mechanics make?

Diesel mechanic salaries differ across states. Factors affecting diesel technician salaries include local cost of living, the types of diesel facilities in the region, employer size and local supply and demand for diesel mechanics.

Training and education, such as the 45-week Diesel Technology program offered by Universal Technical Institute, can prepare individuals for careers in the diesel industry by teaching them to diagnose, maintain and repair diesel technologies, enhancing their employability and potential earnings.^1,7

To find out more about U.S. diesel mechanic salary trends according to the U.S. Bureau of Labor Statistics, keep reading!

How Much Does a Diesel Mechanic Make a Year?

Skilled diesel technicians are in demand. In fact, there are more than 26,000 estimated average annual diesel technician job openings in the United States.⁴³

According to the BLS, the median annual salary for bus and truck mechanics and diesel engine specialists in the United States was $61,770 in May 2025.²⁹ This means half of diesel technicians earned more and half earned less. Keep in mind that salary depends on several factors, including experience, employer, demand and cost of living in the area.

Read: How to Become a Diesel Mechanic

Do Diesel Mechanics Get Paid Well?

Diesel mechanics are paid based on a variety of factors such as local wage trends, prior experience, education, employer availability and much more. If you’re looking to improve your education and prepare for the field, you can start training in Universal Technical Institute’s 45-week Diesel Technology program!⁷

With our state-of-the-industry core diesel training, students can take diesel mechanic courses and learn how to diagnose, maintain and repair diesel technologies. By completing this program, graduates can prove to employers that they’ve developed in-demand industry skills.

Read: Diesel Mechanic Careers: A Comprehensive Guide

Average Diesel Mechanic by Type

There are a variety of diesel mechanic careers to pursue, as specialized skills are valuable to multiple industries. A few common industries for diesel mechanics include:

• Trucking and transportation: Mechanics in trucking and transportation work for trucking companies or transportation agencies, maintaining and repairing heavy diesel-engine vehicles, such as semitrucks and buses.
• State and local governments: These technicians service and repair the diesel-powered vehicles and equipment their local governments use.
• Power generation: Power gen technicians install, service and repair diesel-fueled power systems. Their duties include troubleshooting generators, calibrating equipment, working on internal combustion engines and more.
• Field service: Also known as mobile mechanics, these technicians travel to clients who need diesel-engine repair.
• Repair and maintenance: Typically employed by maintenance and repair shops, these technicians maintain, diagnose and repair diesel-fueled vehicles.

As previously mentioned, the average salary for diesel mechanic roles can vary by experience, employer, demand and cost of living.

Top 10 Median Annual Diesel Mechanic Salary

To help you plan a potential career move, here's a look at how the top states rank in median wages for bus and truck mechanics and diesel engine specialists as reported by BLS. Differences in state-by-state diesel mechanic salaries are due to factors such as local cost-of-living, the types of diesel facilities present in a region, the size of employers available in an area and local supply and demand.

1. Hawaii: $80,080

Hawaii, the Aloha State, is home to several U.S. military bases for the Air Force, Army, Navy, Coast Guard and Marines. Some of the big industries in Hawaii include agriculture, manufacturing and transportation. These industries all rely on diesel equipment.

2. Washington: $77,900

Washington serves the Pacific Northwest and beyond as a leader in agriculture and food manufacturing, green technology, forestry, military, defense and maritime industries. Diesel technicians here are needed to work on ships, farming equipment, forestry equipment and more. They also work in manufacturing, including on machines producing life science and global health products.

3. Alaska: $75,580

Alaska’s top economic industries include oil, fishing, timber, mining and agriculture. All of these industries use diesel-powered equipment. If you love the outdoors, you might consider pursuing a diesel career in Alaska.

4. Maryland: $74,790

Heading back to the East Coast for sixth place, Maryland is one of the original 13 colonies, and its economy reflects that. Since the colonial period, Maryland has had large tobacco farms and large farms with other crops.

Maryland is also home to a bustling manufacturing industry. Both manufacturing and agriculture rely on big machines and diesel mechanics to keep them running. Plus, you can enjoy stunning natural landscapes and delicious blue crabs if you choose to live and work in Maryland!

5. California: $73,950

California’s economy is the fifth-largest in the world, according to the U.S. Bureau of Economic Analysis. Major industries include agriculture, transportation, manufacturing and utilities. Diesel technicians are needed in the state to work on farm equipment, forestry equipment, ships, large trucks and more.

6. Massachusetts: $73,270

Manufacturing, trade and transportation are included in the top industries in Massachusetts. Diesel technicians here work on ship equipment and in manufacturing sectors.

7. New Jersey: $72,340

New Jersey has diesel technician jobs for industries such as manufacturing, transportation and logistics and pharmaceuticals. According to the state government website, New Jersey has been a top producer of pharmaceuticals and is the industry’s most strategically relevant manufacturing site.

8. New Hampshire: $71,390

9. Colorado: $70,480

Connecticut, the Constitution State, touts advanced manufacturing, bioscience and green technology among its top industries. The state is a manufacturer of jet engines, nuclear submarines, medical tools and green-energy technologies. Diesel equipment powers much of the work in these industries.

10. New York: $70,100

New York has the third-largest economy in the U.S., Investopedia reports. The state is a major exporter of manufactured goods to other states and countries, and its role in technical manufacturing has risen in recent years.

Read: How to Train to Become a Bus Mechanic

Common Diesel Mechanic Salary FAQs

What is the highest paid diesel mechanic?

The BLS reports that diesel mechanics who work in natural gas distribution are the highest paid.

What is the median hourly wage for diesel mechanics?

The BLS reports that the median hourly wage for bus and truck mechanics and diesel engine specialists in the United States was $29.70 ($61,770 annually) as of May 2025.²⁹

What factors affect diesel technician salary?

Diesel technician salary is determined by several factors, including experience, employer, demand and the cost of living in the area.

Do diesel mechanics make more with certifications?

Yes, diesel mechanics with certifications often earn higher salaries than those without. Certifications from organizations like ASE (Automotive Service Excellence) or manufacturer-specific training programs demonstrate advanced skills and expertise, making mechanics more valuable to employers. Many companies offer higher pay, bonuses or promotions to certified technicians due to their specialized knowledge and proven competency.

Do diesel mechanics get paid hourly or are they salaried?

Most diesel mechanics are paid hourly, but pay structures can vary depending on the employer and position. Some experienced or specialized diesel technicians may receive salaried positions, especially in management or supervisory roles. Additionally, many mechanics can earn overtime pay, which can significantly boost their earnings.

Can diesel mechanics increase their salary through specialization?

Yes, specializing in certain areas—such as advanced diagnostics, fleet maintenance, marine diesel or heavy equipment repair—can lead to higher salaries. Mechanics with expertise in high-demand fields often command better pay and have more career advancement opportunities. Many employers value specialized skills, offering bonuses, raises or premium wages to technicians who invest in additional training.

Do diesel mechanics earn more than other automotive technicians?

According to the BLS in May 2025, the median annual salary for bus and truck mechanics and diesel engine specialists in the United States was $61,770²⁹ while the median annual salary for automotive service technicians and mechanics in the United States was $50,620.²⁵

How does experience impact a diesel mechanic’s salary?

Experience is one of the biggest factors influencing a diesel mechanic’s salary. Entry-level technicians start at lower wages, but as they gain hands-on experience, certifications and specialized skills, they may be able to qualify for higher-paying positions. Senior mechanics, master technicians or those in leadership roles can earn significantly more than beginners, with many advancing to supervisory or managerial positions over time.⁷⁷

Pursue a Diesel Mechanic Career

Completing a formal diesel training program is one of the best ways to start a career as a diesel mechanic. At Universal Technical Institute (UTI), students receive hands-on training with industry-standard tools and equipment, preparing them for real-world challenges in the field.¹⁸ Even after graduating, staying updated on new diesel technology is essential for career growth.

If you're ready to build your skills and gain the training employers value, request information today. We’ll get you in touch with an Admissions Representative who can answer your questions and help get you started!