Somehow, there have been five Ice Age movies, while there have only been four in the Despicable Me series (in case you had mentally blocked the existence of Minions).
Despicable Me also has taken the box office crown with fewer films than it took Ice Age to do it.
The Cars franchise can be counted as having five films only if you include the Planes spin-offs, and nobody does that.
Beyond that, you only have the Toy Story series which is sitting at three entries with a fourth planned for release in 2019.