In 1972, Hot Wheels continued to innovate and introduce new series. The lines released during this year include:
- Sizzlers (continuation): The popular battery-powered cars that could run independently continued in 1972.
- Rrrumblers (continuation): The motorcycle series with riders remained part of the lineup, featuring new models.
- Farbs (continuation): The futuristic fantasy vehicles with exaggerated designs were carried over from the previous year.
- Heavyweights (continuation): The utility vehicles and trucks line also continued into 1972.
In 1972, Hot Wheels focused on continuing the success of previous lines rather than introducing entirely new ones, refining the models and features of existing series.