Career comparison
Diesel Mechanic vs. Truck Driver
Side-by-side pay, training, growth and day-to-day duties to help you choose between two related careers.
Diesel mechanics earn more at the median ($61,770 vs. $58,640), while truck drivers usually get to work faster (3–7 weeks of training). Diesel mechanics diagnose and repair trucks, buses and diesel-powered equipment. Truck drivers haul freight safely across town or across the country with a CDL.
Pay data: BLS OEWS, May 2025 · Outlook: BLS 2025–35 · Checked October 15, 2026
| Diesel Mechanic | Truck Driver | |
|---|---|---|
| Median pay | $61,770 ($29.70/hr) | $58,640 ($28.19/hr) |
| Pay range (10th–90th) | $44,530 – $88,740 | $40,140 – $79,380 |
| Job growth, 2025–35 | +3.6% (about as fast as average) | +3.8% (about as fast as average) |
| Openings per year | 24,400 | 214,500 |
| Typical entry education | High school diploma or equivalent | Postsecondary nondegree award |
| Training time | 6–24 months | 3–7 weeks |
| Key credential | ASE Medium-Heavy Truck (T-series) | CDL Class A |
| Work setting | Diesel mechanics work in fleet shops, dealerships, independent repair shops and on the road as field service techs. | Drivers spend most of the day in the truck cab, sometimes loading or unloading at docks. |
What each job does
Diesel Mechanic
- Perform preventive maintenance inspections and services
- Diagnose problems using diagnostic software and test equipment
- Repair or rebuild engines, transmissions and drivetrains
- Inspect and repair air brakes, steering and suspension
- Service aftertreatment systems such as DPF, DEF and SCR
Truck Driver
- Inspect trucks and trailers before and after trips
- Plan routes considering weight, height, traffic and weather
- Drive safely while following traffic laws and federal regulations
- Record hours of service with an electronic logging device (ELD)
- Secure cargo and verify loads against shipping documents
How they’re similar
Both careers involve working independently. They sit in different fields, mechanics, maintenance & manufacturing and transportation & logistics, but share transferable skills such as problem-solving and independence and self-discipline.
Which should you choose?
Choose diesel mechanic if…
- I love figuring out why engines and machines fail
- I don’t mind grease and heavy parts
- I’m comfortable using computers for diagnostics
Choose truck driver if…
- I like working independently
- I enjoy driving and don’t mind long hours on the road
- I want to start earning within a couple of months
Still torn? Take the Diesel Mechanic fit quiz and the Truck Driver fit quiz, or the full Career Match Quiz.
Quick comparisons
Which pays more, diesel mechanic or truck driver?
Diesel Mechanics earn more at the median: $61,770 versus $58,640 for truck drivers, based on BLS May 2025 data.
Which takes less time to train for?
Truck Drivers typically train faster (3–7 weeks) than diesel mechanics (6–24 months).
Which career has better job growth?
BLS projects truck drivers to grow +3.8% from 2025–35, compared with +3.6% for diesel mechanics.