# Will diesel mechanics be replaced by AI? Updated October 2026 Diesel mechanics score 15 of 100 for AI exposure. 79% of their task time still needs a person. AI speeds up the other 21%. - **21%** AI helps - **79%** Needs a person Low exposure Lower than 89% of the 923 occupations we scored. ## Task by task We graded 26 tasks, listed here from most to least exposed. AI can't do any of them end to end yet. It speeds up 6 and leaves 20 to people. | Task | AI exposure | | --- | --- | | Attach test instruments to equipment, and read dials and gauges to diagnose malfunctions. AI can interpret gauge and scan readings; technician attaches instruments. | 35% AI helps | | Inspect, test, and listen to defective equipment to diagnose malfunctions, using test instruments such as handheld computers, motor analyzers, chassis charts, or pressure gauges. AI can help interpret test data; listening and probing stay human. | 35% AI helps | | Measure vehicle emissions to determine whether they are within acceptable limits. Analyzer runs the test; AI can interpret and log readings. | 35% AI helps | | Inspect and verify dimensions and clearances of parts to ensure conformance to factory specifications. Measuring is manual; AI can check specs and log results. | 25% AI helps | | Adjust or repair computer controlled exhaust emissions devices. Software can guide emissions diagnosis; physical repair stays human. | 25% AI helps | ## How diesel mechanics compare All occupations (923) Installation, maintenance and repair (50) **Diesel mechanics score 15**, marked by the dark line. Each dot is a score, darker where more occupations share it. The short marks show the averages, 37 for all occupations and 21 for installation, maintenance and repair. ## Pay and outlook in the US Median pay $61,770 a year, May 2025 People employed 289,960 in the US, May 2025 Projected change in jobs +3.6% from 2024 to 2034 ## Skills to build - Run diagnostic scans on diesel engines with manufacturer software - Hold ASE Medium-Heavy Truck certification - Perform brake relining and wheel alignment manually - Test drive buses and trucks on the road - Operate valve-grinding machines to reset engine valves - Track parts stock in Inventory tracking software ## Safer roles nearby 5 related occupations with lower scores. - [Motorcycle mechanics12 out of 100](https://www.aigentcy.com/ai-exposure/motorcycle-mechanics/) - [Forklift operators10 out of 100](https://www.aigentcy.com/ai-exposure/forklift-operators/) - [Millwrights12 out of 100](https://www.aigentcy.com/ai-exposure/millwrights/) - [Railroad brakemen12 out of 100](https://www.aigentcy.com/ai-exposure/railroad-brakemen/) - [Hoist operators13 out of 100](https://www.aigentcy.com/ai-exposure/hoist-operators/) ## Questions about diesel mechanics and AI Will AI replace diesel mechanics? Partly. About 1 in 10 of a diesel mechanic's working hours go to tasks AI can already do, mostly attaching test instruments, reading gauges, and measuring emissions. Hands-on repair, road testing, and tire work stay with people, because they need a technician physically on the vehicle. Which diesel mechanic tasks is AI taking over? Reading test data has the highest exposure, scoring 35 for attaching instruments to read dials and gauges. AI can interpret gauge and scan readings while the technician connects the instruments. Emissions measurement also scores 35, since the analyzer runs the test and AI can log and interpret the results. Which diesel mechanic tasks stay human? Raising trucks with jacks and hoists scores 3, the lowest exposure in the job. Test driving, mounting tires, and relining brakes each score 5 to 6 because they require a person on the road or at the vehicle. Listening and probing defective equipment also stays with the technician. How can diesel mechanics stay valuable? Learn the diagnostic software that runs on scan tools and emissions analyzers, since interpreting those readings is where AI helps most. Keep hands-on skills in brake relining, wheel alignment, and valve grinding. Use Inventory tracking software and Scheduling software to plan parts and service bays, and hold ASE truck certifications. ## Related jobs - [Mobile heavy equipment mechanics20 out of 100](https://www.aigentcy.com/ai-exposure/mobile-heavy-equipment-mechanics/) - [Auto mechanics21 out of 100](https://www.aigentcy.com/ai-exposure/auto-mechanics/) - [Aircraft mechanics17 out of 100](https://www.aigentcy.com/ai-exposure/aircraft-mechanics/) - [Industrial machinery mechanics31 out of 100](https://www.aigentcy.com/ai-exposure/industrial-machinery-mechanics/) ## Next steps for diesel mechanics - ### Check your job Your job title is a rough guide. Your actual tasks decide your score. Paste your job description or CV and see which of your tasks AI can do. [Check your job](https://www.aigentcy.com/tools/ai-exposure-checker/) [Check your CV](https://www.aigentcy.com/tools/cv-checker/) ### Check which roles in your team AI can take on We map your team's tasks, show what AI can do today and build the automations that pay back first. [Book an AI audit](https://www.aigentcy.com/audit/) ## Related topics - [**Jobs AI can't replace**Cement masons score lowest, at 8.](https://www.aigentcy.com/ai-exposure/jobs-ai-cant-replace/) - [**Jobs most at risk from AI**Proofreaders score highest, at 76.](https://www.aigentcy.com/ai-exposure/jobs-most-exposed-to-ai/) - [**High-paying jobs with low AI exposure**Radiologists earn a median $420,860 and score 46.](https://www.aigentcy.com/ai-exposure/high-paying-jobs-low-ai-exposure/) - [**Entry-level jobs with low AI exposure**Cement masons need little prior training and score 8.](https://www.aigentcy.com/ai-exposure/entry-level-jobs-low-ai-exposure/) - [**Jobs AI speeds up the most**For natural sciences managers, AI speeds up 96% of task time.](https://www.aigentcy.com/ai-exposure/jobs-ai-speeds-up/) - [**AI and jobs in Malta**15 iGaming roles graded task by task.](https://www.aigentcy.com/ai-exposure/malta/) - [**Skills that keep work human**The skills to build in the jobs AI changes least.](https://www.aigentcy.com/ai-exposure/skills/) - [**Jobs A to Z**Every job we publish, by first letter.](https://www.aigentcy.com/ai-exposure/jobs/) - [**AI exposure by industry**Average scores for 22 occupation groups.](https://www.aigentcy.com/ai-exposure/industries/) - [**Write a CV screening software can read**How applicant tracking systems read a CV, and what to change.](https://www.aigentcy.com/ai-exposure/cv-screening-guide/) - [**AI for businesses**The tasks to automate first in each team and industry.](https://www.aigentcy.com/ai-for/) - [**How we score AI exposure**The grading, the weights and every source.](https://www.aigentcy.com/ai-exposure/methodology/) Occupation data from the O\*NET 30.3 Database by the U.S. Department of Labor, Employment and Training Administration (USDOL/ETA), used under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/) and modified by Aigentcy. O\*NET® is a trademark of USDOL/ETA. Wage, employment and projection data from the U.S. Bureau of Labor Statistics. EU occupation names from ESCO, European Commission. AI usage signals from the Anthropic Economic Index (CC BY) and Microsoft Research (CC BY 4.0). [Methodology and sources](https://www.aigentcy.com/ai-exposure/methodology/). Scores © Aigentcy. Quote them with a link to the page.