[4] The 2018 season saw the introduction of the first Gen 2 Supercars, which opened up the category up to a wider variety of body shapes and engine configurations.
The championship saw the introduction of the hatchback Holden ZB Commodore, marking the first time since 1994 that a car with a body shape other than a four-door sedan has competed.
[5][6] Teams were free to develop new chassis and engine packages under the Gen 2 regulations, while the New Generation cars first introduced in 2013 remained eligible to compete.
[29] Triple Eight team were proposing to debut the V6 powerplant with a number of wildcard entries, however the discontinuation of the project resulted in this being scrapped.
LDM was rebranded as 23Red Racing after sponsor Phil Munday purchased a 60% stake in the team in the off-season, before taking full ownership in April 2018.
[36] Hazelwood joined Matt Stone Racing—the team he won the 2017 Super2 title with—while De Pasquale replaced Dale Wood at Erebus Motorsport.
[42] James Moffat left Garry Rogers Motorsport at the end of the 2017 championship and joined Tickford Racing for the Enduro Cup.
All four were longer than the races that were run as part of the Australian Grand Prix support event in previous years, before it was granted championship status.
Bold - Pole position Italics - Fastest lap The Champion Manufacturer of the Year title was awarded to Holden.