Short answer
Very unlikely. BLS rates diesel mechanics among the occupations least exposed to AI, and most of the work is the kind current AI tools cannot do.
AI and jobs
Will AI Replace Diesel Mechanics? (2026)
The Bureau of Labor Statistics places diesel mechanics in its low AI exposure category, among the occupations least exposed to current AI. BLS projects employment to change by +3.6% over 2025–2035, against 3.5% for all occupations, with about 24,400 openings a year.
- BLS AI exposure
- LowBLS EP supplemental table
- AI-resilience score
- 60/100Higher than 85% of jobs · NueCareer
- Projected change
- +3.6%BLS EP 2025–2035; all jobs 3.5%
- Openings a year
- 24,400BLS EP 2025–2035
The federal measure
How exposed diesel mechanics are to AI
The Bureau of Labor Statistics publishes a relative AI exposure category for each occupation it projects, built from five public measures of where AI could be, or already is, used to assist with or complete the work. Diesel Mechanics land in the low category: among the occupations least exposed to current AI.
Where this job sits on the BLS scale
786 occupations in the NueCareer bank, in BLS's four relative categories; width shows how many fall in each
- Low · this job203 occupations · 26%
- Moderate194 occupations · 25%
- High190 occupations · 24%
- Very high199 occupations · 25%
Source: BLS Employment Projections, AI exposure categories supplemental table.
- Exposure is relative. The categories rank occupations against each other; they are not a probability that a job is automated.
- BLS says exposure does not imply job loss, productivity gains, automation probability or wage effects. A highly exposed job can still grow if AI makes the people in it more productive.
- The classification reflects AI capabilities as the underlying studies measured them. Read the BLS method and limitations.
Inside the work
What AI can and cannot do in this job
O*NET rates how important each work activity is to an occupation and how often each working condition comes up. The ratings below are the ones that move the job's NueCareer AI-resilience score the most: the ones that pull it up, and the ones that pull it down. Only ratings clearly above the midpoint count.
What holds up
Physical, hands-on and person-to-person work
- Repairing and maintaining mechanical equipment4.6/5O*NET work activity, importance
- Face-to-face discussions4.7/5O*NET work context, frequency or level
- Performing general physical activities4.0/5O*NET work activity, importance
- Hands-on work with tools and objects4.8/5O*NET work context, frequency or level
What AI reaches first
Routine, repeatable and screen-based work
- Repetitive motions4.1/5O*NET work context, frequency or level
- Documenting/recording information3.7/5O*NET work activity, importance
- Getting information4.3/5O*NET work activity, importance
- Processing information3.5/5O*NET work activity, importance
The tasks O*NET lists for diesel mechanics
- Use handtools, such as screwdrivers, pliers, wrenches, pressure gauges, or precision instruments, as well as power tools, such as pneumatic wrenches, lathes, welding equipment, or jacks and hoists.
- Perform routine maintenance such as changing oil, checking batteries, and lubricating equipment and machinery.
- Examine and adjust protective guards, loose bolts, and specified safety devices.
- Inspect brake systems, steering mechanisms, wheel bearings, and other important parts to ensure that they are in proper operating condition.
- Adjust and reline brakes, align wheels, tighten bolts and screws, and reassemble equipment.
- Raise trucks, buses, and heavy parts or equipment using hydraulic jacks or hoists.
O*NET 31.0 Database task statements, most important first.
The jobs
Will there still be jobs?
Exposure says where AI meets the work. The BLS projection says what the labor market is expected to do over 2025–2035. BLS projects +3.6% change in employment over the decade, against 3.5% across all occupations, and about 24,400 openings a year once retirements and career changes are counted. About 289,960 people work in the job today, at a median of $61,770 a year (BLS OEWS, May 2025).
Options
Related careers that are also low-exposure
Careers O*NET lists as related to the work, or in the same field at similar pay, that BLS places in a low exposure category.
Mobile Heavy Equipment Mechanic, Except Engines
Installation, Maintenance, and Repair
- Median pay
- $65,510median a year
- Growth
- +6.7%
- Openings / yr
- 15,000
- Education
- High school
- Low
- BLS AI exposure
- 66/100
- resilience
Diagnose, adjust, repair, or overhaul mobile mechanical, hydraulic, and pneumatic equipment, such as cranes, bulldozers, graders, and conveyors, used in construction, logging, and mining.
Motorcycle Mechanic
Installation, Maintenance, and Repair
- Median pay
- $48,580median a year
- Growth
- +2.1%
- Openings / yr
- 1,400
- Education
- Certificate
- Low
- BLS AI exposure
- 66/100
- resilience
Diagnose, adjust, repair, or overhaul motorcycles, scooters, mopeds, dirt bikes, or similar motorized vehicles.
Motorboat Mechanic and Service Technician
Installation, Maintenance, and Repair
- Median pay
- $57,550median a year
- Growth
- +4.9%
- Openings / yr
- 2,600
- Education
- High school
- Low
- BLS AI exposure
- 65/100
- resilience
Repair and adjust electrical and mechanical equipment of inboard or inboard-outboard boat engines.
Rail Car Repairer
Installation, Maintenance, and Repair
- Median pay
- $67,530median a year
- Growth
- +2.6%
- Openings / yr
- 1,600
- Education
- High school
- Low
- BLS AI exposure
- 64/100
- resilience
Diagnose, adjust, repair, or overhaul railroad rolling stock, mine cars, or mass transit rail cars.
Outdoor Power Equipment and Other Small Engine Mechanic
Installation, Maintenance, and Repair
- Median pay
- $47,880median a year
- Growth
- +2.3%
- Openings / yr
- 3,800
- Education
- High school
- Low
- BLS AI exposure
- 64/100
- resilience
Diagnose, adjust, repair, or overhaul small engines used to power lawn mowers, chain saws, recreational sporting equipment, and related equipment.
Questions
Will AI Replace Diesel Mechanics? FAQ
Will AI replace diesel mechanics?
Very unlikely. BLS rates diesel mechanics among the occupations least exposed to AI, and most of the work is the kind current AI tools cannot do. BLS defines exposure as AI being able to assist with or complete some of the work, and says it does not imply job loss, productivity gains or wage effects. BLS projects employment to change by +3.6% over 2025–2035, against 3.5% for all occupations, with about 24,400 openings a year.
How exposed are diesel mechanics to AI?
BLS sorts 786 occupations into four relative categories: low, moderate, high and very high. Diesel Mechanics are in the low category, alongside 202 other occupations. The categories combine five public measures of where AI could be or already is used, and they compare occupations with each other rather than giving an absolute risk.
What parts of a bus and truck mechanic and diesel engine specialist's job can AI do?
In O*NET's description of the work, the parts that overlap most with what AI handles well are repetitive motions, documenting/recording information and getting information. The parts that hold up best are repairing and maintaining mechanical equipment, face-to-face discussions and performing general physical activities. These come from O*NET ratings of how important each activity is to the job, read through NueCareer's AI-resilience method.
Is being a bus and truck mechanic and diesel engine specialist a safe career from AI?
On NueCareer's AI-resilience score, built from O*NET work activities, diesel mechanics score 60 out of 100, higher than 85% of the occupations we score. The job pays a median of $61,770 a year (BLS OEWS, May 2025). No job is fully safe from technological change, but the federal exposure category and the projected openings are the two numbers worth weighing.
What careers similar to diesel mechanics are less exposed to AI?
Mobile Heavy Equipment Mechanic, Except Engines (low exposure, $65,510 median), Motorcycle Mechanic (low exposure, $48,580 median), Motorboat Mechanic and Service Technician (low exposure, $57,550 median), Rail Car Repairer (low exposure, $67,530 median). Each is also in the low category, and most are listed by O*NET as related to the work.
The AI exposure category is the Bureau of Labor Statistics'. The AI-resilience score and the activity breakdown are NueCareer's analysis of O*NET 31.0 Database data (method), not a federal figure. More: jobs most exposed to AI, jobs least exposed to AI, or check any job.