Auto Mechanic vs Plumber Salary
Plumbers earn approximately 29.8% more than Auto Mechanics nationally — $61,000 vs $47,000.
Plumbers earn approximately $14,000 more per year than Auto Mechanics — about 30% — with comparable entry requirements.
What it takes to get in
Auto Mechanic roles typically require a high school diploma, while Plumber roles require a high school diploma. Counting everything it takes to become employable — degree plus any apprenticeship, residency, or licensing exam — that is roughly 2 years for Auto Mechanic and 5 for Plumber.
Those extra years are not free. Over a 40-year working life, becoming a Plumber consumes about 5 of them in training rather than earning, against 2 on the Auto Mechanic path. Holding pay flat at the median and ignoring raises, that leaves roughly $2,135,000 of lifetime gross for the Plumber versus $1,786,000 for the Auto Mechanic — still $349,000 ahead despite the later start. Actual pay rises with tenure, so the arithmetic understates both sides — it is directional, not predictive.
Only one of the two is gated by licensing: Plumber requires State/local plumbing license required after apprenticeship, while Auto Mechanic does not. That cuts both ways — a license is a real barrier when you are trying to enter, and a real moat once you hold one, because it limits how quickly the labor supply can grow.
Pay range, not just the median
The medians hide most of what matters. Auto Mechanic pay runs from roughly $31,000 at the low end to $76,000 at the high end; Plumber runs $39,000 to $105,000. The title sets the band; specialization, employer size, and location decide where inside it you actually sit.
What the work is actually like
Auto Mechanic: Repair shops and dealership service bays. Plumber: Residential and commercial job sites, crawlspaces, basements.
Schedules differ too: Auto Mechanic work usually means standard weekday hours, Plumber means on-call rotations. People underweight this when comparing offers and then cite it when they leave.
Moving between the two
Both sit in Trades, so the surrounding context transfers even where the day-to-day does not: similar employers, similar hiring cycles, overlapping professional networks. Diesel and heavy-truck techs need extra certification to move into light-duty repair and vice versa; career-changers without a program usually start as a lube/tire technician. Pipefitters and steamfitters cross over directly; HVAC techs pick it up faster than average due to overlapping pipe and code knowledge.
If you are entering rather than switching: Auto Mechanic — Complete a 1-2 year postsecondary automotive technology program, then earn ASE certifications while working as an apprentice technician under a shop's supervision. Plumber — Complete a 4-5 year union (UA) or trade-school apprenticeship, then pass the state or local plumbing license exam.
Pay ranges, education requirements, and employment projections come from the Bureau of Labor Statistics Occupational Outlook Handbook and Occupational Employment and Wage Statistics. See our methodology for how these are compiled and updated.
Other comparisons in Trades
Related tools
Auto Mechanic salary by state — Plumber salary by state — Best cities for Auto Mechanic — Best cities for Plumber — Paycheck Calculator — Investment Calculator.