Career comparison
Diesel Mechanic vs. Heavy Equipment Mechanic
Side-by-side pay, training, growth and day-to-day duties to help you choose between two related careers.
Heavy equipment mechanics earn more at the median ($65,510 vs. $61,770), while diesel mechanics usually get to work faster (6–24 months of training). Diesel mechanics diagnose and repair trucks, buses and diesel-powered equipment. Heavy equipment mechanics keep bulldozers, excavators, loaders and cranes working on job sites and in shops.
Pay data: BLS OEWS, May 2025 · Outlook: BLS 2025–35 · Checked October 15, 2026
| Diesel Mechanic | Heavy Equipment Mechanic | |
|---|---|---|
| Median pay | $61,770 ($29.70/hr) | $65,510 ($31.50/hr) |
| Pay range (10th–90th) | $44,530 – $88,740 | $46,820 – $94,460 |
| Job growth, 2025–35 | +3.6% (about as fast as average) | +6.7% (faster than average) |
| Openings per year | 24,400 | 15,000 |
| Typical entry education | High school diploma or equivalent | High school diploma or equivalent |
| Training time | 6–24 months | 1–2 years |
| Key credential | ASE Medium-Heavy Truck (T-series) | Dealer technician program credentials |
| Work setting | Diesel mechanics work in fleet shops, dealerships, independent repair shops and on the road as field service techs. | Mechanics work in dealership and fleet shops and outdoors at construction, mining and forestry sites in all weather. |
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
Heavy Equipment Mechanic
- Perform preventive maintenance and inspections
- Diagnose hydraulic, electrical and engine problems
- Repair and rebuild pumps, cylinders and transmissions
- Replace undercarriage components such as tracks and rollers
- Use diagnostic software to read fault codes
How they’re similar
Both careers involve hands-on work, problem-solving, physical work, and working independently. Both are part of the mechanics, maintenance & manufacturing field, so many skills transfer between them.
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 heavy equipment mechanic if…
- I like big machines
- I enjoy troubleshooting hydraulics and engines
- I don’t mind getting dirty
Still torn? Take the Diesel Mechanic fit quiz and the Heavy Equipment Mechanic fit quiz, or the full Career Match Quiz.
Quick comparisons
Which pays more, diesel mechanic or heavy equipment mechanic?
Heavy Equipment Mechanics earn more at the median: $65,510 versus $61,770 for diesel mechanics, based on BLS May 2025 data.
Which takes less time to train for?
Diesel Mechanics typically train faster (6–24 months) than heavy equipment mechanics (1–2 years).
Which career has better job growth?
BLS projects heavy equipment mechanics to grow +6.7% from 2025–35, compared with +3.6% for diesel mechanics.