▼1%
AU$173,689
Avg. Base Salary (AUD)
/ year
Avg. Base Salary (AUD)
10%
A$126k
MEDIAN
A$174k
90%
A$199k
The average salary for a Principal Mechanical Engineer is AU$173,689 in 2025
Base Salary
AU$126k - AU$199k
Bonus
AU$0 - AU$16k
Total Pay
AU$133k - AU$203k
Is Average Principal Mechanical Engineer with Engineering Design Skills Salary in Australia your job title? Find out what you should be paid
Use our tool to get a personalized report on your market worth.What's this?
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What is the Pay by Experience Level for Principal Mechanical Engineers?
▼1%
What Do Principal Mechanical Engineers Do?
Find your market worth – how it works:
Common Health Benefits for a Principal Mechanical Engineer
None
100%
Gender Breakdown for Principal Mechanical Engineers
Male
92.9%
Female
7.1%
This data is based on 14 survey responses. Learn more about the gender pay gap.
FAQs About Principal Mechanical Engineers
What is the highest pay for Principal Mechanical Engineers?
Our data indicates that the highest pay for a Principal Mechanical Engineer is A$199k / year
What is the lowest pay for Principal Mechanical Engineers?
Our data indicates that the lowest pay for a Principal Mechanical Engineer is A$126k / 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.