Diesel mechanic salary in Washington
Median $37.45 an hour for 7,410 bus and truck mechanics and diesel engine specialists, May 2025, with the union scale by county and the trend since 1999.
Diesel mechanic pay in Washington: the full range
Washington ranks 2nd of 51 states for median diesel mechanic pay, and 4th once adjusted for cost of living (the cost-of-living-adjusted median is $35.00). 7,410 bus and truck mechanics and diesel engine specialists work in the state.
| Career stage (approximate) | Hourly | Annual | Where it sits in the distribution |
|---|---|---|---|
| Apprentice / entry | $26.31 – $30.62 | $54,720 – $63,700 | roughly the 10th–25th percentile |
| Journeyman | $30.62 – $44.66 | $63,700 – $92,880 | the middle half, around the median |
| Master / foreman / specialist | $44.66 – $49.42 | $92,880 – $102,800 | the 75th–90th percentile and above |
Where does your pay fall?
Diesel mechanic pay by metro in Washington
| Metro | 10th | Median $/hr | 90th | Jobs | vs state |
|---|---|---|---|---|---|
| Seattle | $29.53 | $39.58 | $55.56 | 3,740 | 6% above |
| Bremerton | $29.46 | $38.68 | $47.81 | 160 | 3% above |
| Olympia | $28.06 | $37.96 | $45.66 | 260 | 1% above |
| Bellingham | $27.98 | $37.66 | $46.12 | 220 | 1% above |
| Mount Vernon | $25.00 | $37.24 | $46.40 | 170 | 1% below |
| Longview | $27.58 | $35.94 | $44.28 | 120 | 4% below |
| Portland | $24.60 | $34.61 | $43.61 | 2,330 | 8% below |
| Kennewick | $22.55 | $33.53 | $41.13 | 250 | 10% below |
| Wenatchee | $25.10 | $33.03 | $51.96 | 100 | 12% below |
| Walla Walla | $25.25 | $32.36 | $43.45 | 50 | 14% below |
| Spokane | $24.35 | $31.19 | $44.85 | 780 | 17% below |
| Yakima | $22.26 | $30.76 | $41.04 | 260 | 18% below |
| Lewiston | $23.37 | $30.13 | $37.17 | 70 | 20% below |
Diesel mechanic wages in Washington over time
Table
| Year | Washington $/hr | In 2025 $ | US $/hr | Jobs |
|---|---|---|---|---|
| 1999 | $17.98 | $34.75 | $14.77 | 7,370 |
| 2000 | $19.85 | $37.11 | $15.55 | 7,070 |
| 2001 | $20.07 | $36.48 | $16.14 | 6,470 |
| 2002 | $19.88 | $35.58 | $16.53 | 5,950 |
| 2003 | $20.11 | $35.19 | $16.81 | 5,560 |
| 2004 | $20.38 | $34.73 | $17.20 | 6,070 |
| 2005 | $20.15 | $33.22 | $17.61 | 5,850 |
| 2006 | $20.46 | $32.67 | $18.11 | 5,720 |
| 2007 | $21.13 | $32.81 | $18.58 | 5,500 |
| 2008 | $21.92 | $32.78 | $18.94 | 5,380 |
| 2009 | $23.01 | $34.53 | $19.35 | 5,860 |
| 2010 | $23.63 | $34.89 | $19.64 | 6,380 |
| 2011 | $24.08 | $34.46 | $20.02 | 6,710 |
| 2012 | $24.83 | $34.82 | $20.35 | 5,770 |
| 2013 | $24.64 | $34.05 | $20.54 | 5,330 |
| 2014 | $25.25 | $34.34 | $20.98 | 5,090 |
| 2015 | $24.88 | $33.79 | $21.40 | 5,210 |
| 2016 | $25.52 | $34.23 | $21.72 | 5,120 |
| 2017 | $25.81 | $33.90 | $22.29 | 5,720 |
| 2018 | $26.58 | $34.08 | $22.76 | 6,120 |
| 2019 | $27.16 | $34.20 | $23.32 | 6,570 |
| 2020 | $28.61 | $35.59 | $24.13 | 6,510 |
| 2021 | $29.22 | $34.72 | $23.41 | 6,590 |
| 2022 | $30.77 | $33.85 | $26.14 | 6,790 |
| 2023 | $32.00 | $33.81 | $28.35 | 6,590 |
| 2024 | $36.99 | $37.96 | $29.15 | 6,880 |
| 2025 | $37.45 | $37.45 | $29.70 | 7,410 |
In today's dollars, the median diesel mechanic wage in Washington changed by +10.8% over the last ten years of data.
Is construction work growing in Washington?
Keep comparing
Diesel mechanic pay in neighbouring states
Other trades in Washington
Questions this page answers
How much do diesel mechanics make in Washington?
The median diesel mechanic in Washington earned $37.45 an hour ($77,900 a year) in May 2025, 26% above the national median of $29.70. The middle half earn $30.62–$44.66; the top 10% earn more than $49.42.
Where does Washington rank for diesel mechanic pay?
Washington ranks 2nd of 51 states for diesel mechanic pay, with a median of $37.45 an hour, and 4th after adjusting for Washington's cost of living (BEA price parity 107.0, US = 100).
What is the union diesel mechanic rate in Washington?
Davis-Bacon determinations do not list a diesel mechanic classification for most Washington counties, or the trade is not covered; the BLS wage figures above are the best available measure.
How many diesel mechanics work in Washington?
BLS counted 7,410 bus and truck mechanics and diesel engine specialists in Washington in May 2025, 2.1 per 1,000 jobs (location quotient 1.12; 1.0 is the national average concentration).
Sources and notes
- BLS Occupational Employment and Wage Statistics, May 2025, Washington and metro areas, SOC 49-3031.
- BLS Current Employment Statistics, state construction employment through 2026-08.
- BLS Quarterly Census of Employment and Wages, 2025 annual averages.
- BEA Regional Price Parities (cost-of-living adjustment).
- SAM.gov Davis-Bacon wage determinations, current revisions as of 2026-09-28. Not the official determination.