Avg. Base Salary (USD)
The average salary for a Principal Mechanical Engineer is $127,666 in 2025
Featured Content
What Do Principal Mechanical Engineers Do?
Common Health Benefits for a Principal Mechanical Engineer
Gender Breakdown for Principal Mechanical Engineers
FAQs About Principal Mechanical Engineers
What is the highest pay for Principal Mechanical Engineers in San Diego?
Our data indicates that the highest pay for a Principal Mechanical Engineer in San Diego is $NaN / year
What is the lowest pay for Principal Mechanical Engineers in San Diego?
Our data indicates that the lowest pay for a Principal Mechanical Engineer in San Diego is $NaN / year
How can Principal Mechanical Engineers increase their salary?
Increasing your pay as a Principal Mechanical Engineer is possible in different ways. Change of employer: Consider a career move to a new employer that is willing to pay higher for your skills. Level of Education: Gaining advanced degrees may allow this role to increase their income potential and qualify for promotions. Managing Experience: If you are a Principal Mechanical Engineer that oversees more junior Principal Mechanical Engineers, this experience can increase the likelihood to earn more.