She started a car grooming business in Hamilton which she ran for three years with her partner, Ms Green.
"We became one of the biggest car grooming companies in Hamilton with many big name car companies as our direct customers, one being my dad's," Ms Witt said.
"This is where I got the exposure to vehicle sales."
Ms Witt worked with her dad for a few years learning about the industry and gaining experience. She then sold the car grooming business, which employed six fulltime staff, and moved to Northland opening Monster Motors in July.
Ms Witt said it was not very common for two younger woman to run their own business but both were "very driven and committed".
"We know how hard it is to get a business off the ground and running successfully - from experience with our car grooming business.
"It involves a lot of hard work, commitment and the saying 'blood, sweat and tears' really does apply in a lot of scenarios.
"There were many times during the few years of running our previous business where we wanted to give up and it seemed like it wasn't worth it as we were living on a minimum wage budget putting all the money into the business.
"But looking back now it was definitely worth it from the experience we gained, the things we learnt and how it helped us become the people we are now."
They set up Monster Motors in Whangarei because Ms Green was born and bred here and Ms Witt, originally from England, spent time here before moving up from Hamilton.
Ms Witt said after talking with locals and researching she discovered a lot of people in Whangarei travelled to Auckland or further to buy cars.
"So I thought why not save them the trip and bring those 'deals' to Whangarei and create the opportunity to support a local business," she said.
"I have found Whangarei is all about small, local businesses that everyone helps out by supporting each other so why not bring this in with vehicle sales too."
Ms Witt said the biggest challenge so far was getting established and known.
"We are only new so a lot of people don't know who we are or where we are. Because we are starting off small, we don't have a yard so are selling out of a warehouse-style set-up with most sales online.
"Also, being a younger female, some people are a bit tentative towards buying a car from me," she said.
"I have encountered this many times over the years and have become used to it and found you just have to talk to people, be friendly and helpful and show them you know what you are talking about.
"Making people feel more comfortable is important, as they are dealing with big amounts of money, so I am willing to do anything to help the process.
"I think it is important for females to go against the stereotypes in industries where males dominate and prove we are just as capable if not more better suited.
"Females in business is a great thing and I would hope that I could be the inspiration for some young girls, just like my granddad was for me."
Ms Witt, who is now a Kiwi citizen having lived in New Zealand for eight years, said she was working solo while Georgia helped on the side while also helping run her dad's construction company out of the same office space. www.monstermotors.co.nz
