The Banjup-based driver, who has been racing since 2008 after following in his father’s footsteps, joined the best from around Australia at the Moora Speedway for the chance to be named the number one driver in the country.
Three heats into the competition at the end of day one, he was 18th in a field of 70, 41 points behind the leader Tim Atkins.
By the time he had finished his last heat race on day two, he had crept up to ninth ahead of the deciding race.
“The feature race took a while to get underway but after a couple of complete restarts the race settled into a rhythm while we were waiting our chance for the car to come on and the gaps to open on a tight tricky track,” McDiarmid said.
“The lead group of cars started to drop off as the laps went on and with about 10 laps to go we made the passing move into second place.”
After a few unsuccessful attempts at passing the leader, WA’s Tim Green, McDiarmid finished the race as the second best production sedan driver in Australia, the best result in his career to date.
He also took home the award for best presented car and crew during the competition.
“Number one in Australia is what everyone wants to be but we are incredibly happy to be number two especially given this is the best result that we have had in an Australian title,” he said.
“To finish on the podium at an Australian title is an achievement so we are stoked to wear the number two badge for the next 12 months.”
After a heavy racing schedule, McDiarmid and his team will start preparing for the next WA title in Broome and another crack at becoming the best in Australia.