Diesel Mechanics in the Trenton area earn a median of $69,480 a year, 15% above the typical U.S. metro. That ranks #43 of 388 metros for diesel mechanics nationwide.
Within driving distance, the same work pays more in New York, but less in Philadelphia.
It's one of 3 New Jersey metros with published pay for this trade; see diesel mechanic pay in New Jersey.
Diesel Mechanic pay in Trenton at a glance
- Diesel mechanics in the Trenton, NJ metro earn a median $69,480 a year ($33.40 an hour), #43 of 388 U.S. metros (BLS, May 2025).
- The middle 80% earn between $48,690 and $89,330.
- After local prices, that median buys what $67,339 would in a typical U.S. place (BEA, 2024).
- A typical 1-bedroom rents for $1,764 a month, 30% of the median pay (HUD, FY2027).
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Enter a rate to see where it falls among diesel mechanics in Trenton.
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What this means Our calculation
Pay for diesel mechanics here is in the top 20% of U.S. metros, and above average once local prices are factored in. For the wider job market, unemployment is higher than in most metros (5.3%) and the population is growing at a typical pace (+3.3% since 2020). On your own, you'd join about 171 one-person auto repair businesses averaging $79,754 in revenue, and you'd need to bill roughly $83/hour to match the median salary (at our default assumptions).
Trenton scorecard for diesel mechanics Our calculation
Grades compare Trenton with every other U.S. metro for this trade (A = top 20%).
Pay Government data
Pay range
Shaded: the middle half of workers. Grey line: typical U.S. metro ($60,355).
Pay over time
The median pay for diesel mechanics in the Trenton area went from $53,100 in 2020 to $69,480 in 2025, up 30.8%. Prices rose 25% over the same period, so after inflation that's +4.4% — a real raise.
BLS OEWS, May 2020–May 2025; inflation: CPI-U (May to May). Year-to-year changes can include survey noise.
Compared with nearby metros
What the pay is really worth in Trenton Our calculation
Prices in the Trenton area run 3% above the U.S. average. Adjusted for that, a median paycheck here buys what $67,339 would in a typical place, ranking #81 of 383 on real pay.
Real pay or rent burden?
Real pay already accounts for housing, because the price index includes rent. Rent burden shows what share of pay a typical 1-bedroom takes. Use either one, not both together.
Want the full picture? Build a cost-of-living budget for Trenton from this pay, local rent and prices.
What diesel mechanics do
Diagnose, adjust, repair, or overhaul buses and trucks, or maintain and repair any type of diesel engines. Includes mechanics working primarily with automobile or marine diesel engines.
Most important day-to-day tasks
- 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.
- Inspect brake systems, steering mechanisms, wheel bearings, and other important parts to ensure that they are in proper operating condition.
- Raise trucks, buses, and heavy parts or equipment using hydraulic jacks or hoists.
- Adjust and reline brakes, align wheels, tighten bolts and screws, and reassemble equipment.
- Attach test instruments to equipment, and read dials and gauges to diagnose malfunctions.
Outlook & getting started
Nationally, diesel mechanic jobs are projected to grow 3.6% from 2025 to 2035 (all jobs: 3.5%), with about 24,400 openings a year. About 6% are self-employed.
What the work is like Government data
How often diesel mechanics deal with each condition, from surveys of workers in the job.
Getting started usually takes medium preparation (vocational training or an apprenticeship, often 1–2+ years).
O*NET 31.0 Work Context and Job Zones (U.S. Department of Labor), national.
Licensing in New Jersey Official source
The main state licensing office in New Jersey is the New Jersey Division of Consumer Affairs. It can point you to the right license for diesel mechanics.
Official New Jersey licensing site ↗
Requirements for diesel mechanics vary by state and sometimes by city; always confirm with the official agency.
On-the-job safety Government data
Nationally, diesel mechanics have 163 injuries or illnesses serious enough to miss work per 10,000 full-time workers, 1.9× the rate for all jobs (87). The most common cause is being struck by or caught in objects and equipment.
BLS Survey of Occupational Injuries and Illnesses, 2023–2024 (national, cases with days away from work).
Highest-paying NJ metros for diesel mechanics
| Metro | Median | Real pay | Jobs |
|---|---|---|---|
| TrentonNEW JERSEY · NJ | $69,480 | $67,339 | 280 |
| Atlantic CityNEW JERSEY · NJ | $67,270 | $68,048 | 280 |
| VinelandNEW JERSEY · NJ | $64,990 | $67,720 | 150 |
See every metro in New Jersey.
How much work is there? Government data
Local job market
The Trenton area's unemployment rate was 5.3% in 2025 (all workers, not just diesel mechanics), above the typical U.S. metro's 4.1%. It was 6.1% in 2021.
BLS Local Area Unemployment Statistics, annual averages 2021–2025 (2025 preliminary).
Getting to work
The average commute in the Trenton area is 27 minutes each way, longer than the typical metro (24 min). 17% of commuters spend 45 minutes or more. 62% drive alone, 4% take transit and 15% work from home (all workers, not just trades).
Census American Community Survey, 2024 1-year estimates (table S0801).
Population
The Trenton area's population grew 3.3% from 2020 to 2025 (386,434 → 399,289), ranking #155 of 387 metros for growth (typical metro +2.5%). People moving in (net +8,751) account for most of the change.
Census Bureau population estimates, July 1 of each year, 2020–2025.
New construction
New-home permits in Trenton are up 114% from 2021 to 2025 (544 → 1,164).
In 2025 the Trenton area approved permits for 1,164 new homes (805 single-family), or 3.0 per 1,000 residents, ranking #223 of 393 metros.
Competition
In 2024 the area had 171 one-person businesses (no employees) in auto repair, averaging $79,754 a year in revenue before expenses. See how Trenton compares among the best cities to start a diesel mechanic business.
They compete with 99 auto repair companies that have employees (about 419 workers in total). 69% of those companies have fewer than 5 employees.
Where to train near Trenton Government data
7 schools in or near Trenton offer vehicle maintenance and repair programs below the bachelor's level, 4 of them at public colleges. Many people in this trade learn through an apprenticeship instead; a program can shorten it or get you hired as a helper.
Where published, graduates earned a median of $41,950 in their first year out.
| School | Credential | Yearly cost | Recent grads | First-year pay |
|---|---|---|---|---|
| Automotive Training Center-Warminster Warminster, PA · Private for-profit | Certificate | $23,216 | 131 | $43,974 |
| Lincoln Technical Institute-South Plainfield South Plainfield, NJ · Private for-profit | Certificate | $41,348 | 89 | $41,342 |
| Pennco Tech-Bristol Bristol, PA · Private for-profit | Certificate | $34,659 | 27 | $41,950 |
| Ocean County Vocational-Technical School Toms River, NJ · Public | Certificate | $17,513 | 25 | $29,541 |
| Pennco Tech-Bristol Bristol, PA · Private for-profit | Associate degree | $34,659 | 24 | $48,128 |
| Brookdale Community College Lincroft, NJ · Public | Certificate | $19,131 | 4 | — |
| Raritan Valley Community College Branchburg, NJ · Public | Certificate | $12,210 | 2 | — |
| Burlington County Institute of Technology-Adult Education Westampton, NJ · Public | Certificate | $19,240 | 0 | — |
U.S. Department of Education College Scorecard (data updated October 2026). Cost is the school's average yearly cost of attendance before financial aid; earnings are the median for graduates one year after finishing, shown only where the school has enough graduates to publish. “—” means not published.
Employee vs. working for yourself Your scenario
A model, not a market rate. It shows the break-even rate to match a $69,480 employee salary once you cover what an employer normally pays for (including the employer half of Social Security and Medicare, 7.65%), then adds your profit margin. Change any number.
Break-even rate
With your profit margin
How this calculator works. Weighing a contractor job against a W-2 one? Try the 1099 vs. W-2 comparison. Billable hours are hours you can charge a customer. Driving, quoting, paperwork and slow weeks aren't billable, which is why 1,400 is a common starting point versus 2,080 paid hours as an employee.
Get diesel mechanic pricing & estimate templates →Compare Trenton with another city →
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ToolTrenton budgetMonthly take-home, HUD rent and local prices on this pay.About this data
Local to the Trenton metro: pay (BLS, May 2025) and pay over time (2020–2025, CPI-adjusted), prices (BEA, 2024), rent (HUD, FY2027), new construction, housing, population and commuting (Census), unemployment (BLS) and business counts (Census, by industry). National: job outlook and training (BLS projections), injury rates (BLS) and duties (O*NET). Jobs are employment estimates, not open positions; grades rank Trenton against every other metro for diesel mechanics. Every source, year and formula is on our data page.