He had previously won from 12th on the grid twice; in Darwin in 2011, and in Townsville last season.
Van Gisbergen’s other 41 career wins came from no lower than sixth on the grid, with the Kiwi winning 24 races from the front row.
“I was a bit annoyed with myself in qualifying, it was up to me and not my injury, and I just didn’t get it right,” he said.
WATCH: RACE 3 HIGHLIGHTS
“In the race, the car was awesome. I got a great start, a good first lap, worked hard to save my tyres and slowly picked off some of the drivers for position.
“The car at the very beginning wasn’t very good… it was very pushy with the rears, but then it got better.
“I managed to catch the guys at the font, but I think Chaz [Mostert] helped me a bit as he slowed everyone up, but I honestly didn’t expect that.
“I was a bit surprised and didn’t think our strategy would work for us, but we just had the speed in the end.
WATCH: SVG'S PAIN AFTER MIRACLE DRIVE
"It was a fun battle at the end where I managed to pull a big move on Chaz, although I didn’t think it was going to work considering we were three-wide, but it was pretty cool.
“I can’t thank the team enough as well, they’ve been bloody awesome this weekend.”
Van Gisbergen heads into Sunday with an extended 60-point over Mostert.
The Repco Supercars Championship field has returned to Victoria this weekend at the Penrite Oil Sandown SuperSprint. Tickets are on sale now.