Enrolment of women on motor vehicle apprenticeship courses is improving but numbers remain low.
Seventeen-year-old Rebekah Gillis is among only a dozen female apprentice mechanics at South West College in Dungannon in County Tyrone.
She wants to own her own garage and said it was "hard" for some women when looking for work because of stereotypes.
"A lot of other places would benefit from having a girl, it would help their reputation, their image," she said.
"I feel that girls need to get into a lot more jobs that are labelled masculine.
"I really think that girls should get more into doing it."
Specific MoT centres are unique to Northern Ireland - in other parts of the UK tests can be carried out by private sector companies.
The number of women accounts for 4% of the total workforce.
According to the Institute for the Motor Industry about 81% of the automotive industry across the UK is male and 19% is female.
Highly outnumbered
Billy-Jo McKenzie from Aughnacloy is studying motorsport engineering and would like to work in Formula 1.
"When I was leaving school, I wasn't really sure what I wanted to do," she told BBC News NI.
"I just knew I liked fixing things and didn't want to sit in an office all day."
She said that more women were now getting into the industry but more work needed to be done to make it a more attractive career choice.
"You used to not see many females coming into this industry but the past few years have seen quite a few more starting to pick up and come in.
She said she was "not surprised" by the 4% figure for women among the MoT workforce.
"It's highly outnumbered - there's not many of us," she said.
"I am not surprised there's that much of a shortage of us. They need to advertise and get more people brought in.
"I was the only girl in my class."