Denise, who lives and works in Polokwane, entered the competition more than 20 times.
"We always watch Top Gear on BBC Prime and when I read on Wheels24 that the presenters would be coming to South Africa and I thought why not enter the competition.
"I also thought that it would be a nice birthday present to me as it was celebrated on 30 January. I honestly did not expect to win it at all."
Her prize was two tickets to see the MPH '08 live motoring theatre and an invitation a gala event attended by Top Gear stars Jeremy Clarkson and Richard Hammond and local host Sasha Martinengo.
Her prize also included travel to and from the Coca-Cola Dome and one night's five-star accomodation.
Denise elected to take her husband of six months, Jaco, along for the thrill ride.
"From the first time that I entered I told my husband I would take him along with me if I won. And although I entered on his behalf as well, he said that if he won I might also be his first choice.
"I have to say, the whole show was just excellent. The organisation and entertainment - we could not ask for more. You will definitely be seeing us there again next year."
And were there any concerns that Denise's employer Eskom's load-shedding schedule may have interfered with the night's events?
"You know, they made so many jokes about the electricity and load shedding that evening. I was so relieved that they did not ask if there was anyone working for Eskom - I don't know if I would have admitted to that.
"But my advice to all is, 'Keep your batteries charged and maybe keep a candle handy,too.'"